Merck & Co., Inc. (MRK) stock
MRKNYSEPharmaceutical PreparationsFiscal year ends December 31
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Aug 7, 2026Score 9/30242% above fair value
$146.33+5.40 (+3.83%)
Close on Oct 29, 2026Market cap $361.02BP/E 117.1Yield 2.24%
Price history
Merck share prices for every month, newest first. Adjusted for stock splits, not for dividends.
Close, Oct 29, 2026
$146.33
+3.83% on the day
52-week range
$82.01 – $156.92
-6.7% from the high
Change over 52 weeks
+69.0%
From $86.58 on Oct 29, 2025
Average volume
10.07M
Shares a day, last 90 sessions
| Month | Open | High | Low | Close | Change | Volume |
|---|---|---|---|---|---|---|
| Oct 2026 | $144.71 | $154.02 | $138.80 | $146.33 | +0.70% | 211,035,265 |
| Sep 2026 | $150.23 | $153.57 | $142.32 | $145.31 | -1.66% | 204,467,313 |
| Aug 2026 | $129.87 | $156.92 | $126.22 | $147.76 | +13.49% | 235,549,748 |
| Jul 2026 | $128.01 | $135.05 | $120.16 | $130.20 | +1.32% | 190,094,836 |
| Jun 2026 | $117.55 | $130.29 | $111.57 | $128.50 | +8.24% | 266,109,615 |
| May 2026 | $112.33 | $123.13 | $110.75 | $118.72 | +8.74% | 178,049,811 |
| Apr 2026 | $120.88 | $124.00 | $107.90 | $109.18 | -9.24% | 196,024,127 |
| Mar 2026 | $123.51 | $123.70 | $112.72 | $120.29 | -2.85% | 226,805,000 |
| Feb 2026 | $110.12 | $125.14 | $109.95 | $123.82 | +12.29% | 258,538,597 |
| Jan 2026 | $105.53 | $112.90 | $104.43 | $110.27 | +4.76% | 252,452,745 |
| Dec 2025 | $104.72 | $107.59 | $96.06 | $105.26 | +0.41% | 308,872,528 |
| Nov 2025 | $85.77 | $105.84 | $82.01 | $104.83 | +21.92% | 290,873,215 |
| Oct 2025 | $85.19 | $91.00 | $83.16 | $85.98 | +2.44% | 262,373,250 |
| Sep 2025 | $84.50 | $85.81 | $77.58 | $83.93 | -0.23% | 273,166,844 |
| Aug 2025 | $78.02 | $87.84 | $77.53 | $84.12 | +7.68% | 230,596,669 |
| Jul 2025 | $78.96 | $85.22 | $76.66 | $78.12 | -1.31% | 295,867,264 |
| Jun 2025 | $77.02 | $82.44 | $75.40 | $79.16 | +3.02% | 356,899,891 |
| May 2025 | $84.51 | $84.71 | $73.31 | $76.84 | -9.81% | 315,538,947 |
| Apr 2025 | $89.75 | $89.75 | $75.93 | $85.20 | -5.08% | 371,295,246 |
| Mar 2025 | $91.78 | $97.37 | $87.08 | $89.76 | -2.70% | 366,361,552 |
| Feb 2025 | $98.13 | $100.15 | $81.04 | $92.25 | -6.65% | 376,763,033 |
| Jan 2025 | $100.28 | $102.97 | $95.15 | $98.82 | -0.66% | 219,516,341 |
| Dec 2024 | $101.73 | $105.07 | $97.82 | $99.48 | -2.13% | 246,365,057 |
| Nov 2024 | $101.78 | $103.45 | $94.48 | $101.64 | -0.66% | 238,853,894 |
| Oct 2024 | $113.96 | $114.79 | $98.60 | $102.32 | -9.90% | 218,233,209 |
| Sep 2024 | $118.26 | $120.30 | $112.41 | $113.56 | -4.13% | 202,870,100 |
| Aug 2024 | $113.13 | $118.75 | $110.72 | $118.45 | +4.70% | 193,904,400 |
| Jul 2024 | $125.38 | $129.93 | $112.22 | $113.13 | -8.62% | 193,972,000 |
| Jun 2024 | $125.77 | $134.63 | $120.87 | $123.80 | -1.39% | 203,192,900 |
| May 2024 | $128.61 | $132.79 | $122.70 | $125.54 | -2.85% | 166,952,900 |
| Apr 2024 | $131.68 | $132.80 | $124.50 | $129.22 | -2.07% | 151,740,800 |
| Mar 2024 | $126.87 | $133.10 | $119.23 | $131.95 | +3.78% | 226,952,700 |
| Feb 2024 | $123.65 | $130.24 | $122.77 | $127.15 | +5.27% | 138,504,700 |
| Jan 2024 | $109.16 | $122.85 | $109.16 | $120.78 | +10.79% | 171,796,200 |
| Dec 2023 | $102.85 | $109.24 | $102.65 | $109.02 | +6.38% | 181,156,900 |
| Nov 2023 | $103.55 | $105.17 | $99.80 | $102.48 | -0.21% | 167,245,700 |
| Oct 2023 | $102.83 | $107.23 | $99.14 | $102.70 | -0.24% | 158,503,000 |
| Sep 2023 | $109.65 | $110.37 | $102.71 | $102.95 | -5.53% | 121,821,700 |
| Aug 2023 | $109.60 | $112.02 | $104.42 | $108.98 | +2.18% | 160,950,700 |
| Jul 2023 | $114.47 | $114.62 | $105.17 | $106.65 | -7.57% | 146,107,100 |
| Jun 2023 | $110.66 | $115.61 | $106.87 | $115.39 | +4.51% | 172,469,900 |
| May 2023 | $115.80 | $119.65 | $108.47 | $110.41 | -4.38% | 142,570,000 |
| Apr 2023 | $105.95 | $116.86 | $105.57 | $115.47 | +8.53% | 121,054,600 |
| Mar 2023 | $105.96 | $112.18 | $102.44 | $106.39 | +0.14% | 216,566,200 |
| Feb 2023 | $106.97 | $111.24 | $101.75 | $106.24 | -1.09% | 157,434,100 |
| Jan 2023 | $110.41 | $115.49 | $105.11 | $107.41 | -3.19% | 172,747,100 |
| Dec 2022 | $109.75 | $112.89 | $107.32 | $110.95 | +0.75% | 188,419,700 |
| Nov 2022 | $100.65 | $110.33 | $97.33 | $110.12 | +8.81% | 201,119,100 |
| Oct 2022 | $86.72 | $101.50 | $86.02 | $101.20 | +17.51% | 204,666,700 |
| Sep 2022 | $85.64 | $89.17 | $84.52 | $86.12 | +0.89% | 170,363,300 |
| Aug 2022 | $89.34 | $93.02 | $85.16 | $85.36 | -4.45% | 177,615,400 |
| Jul 2022 | $91.30 | $95.35 | $87.42 | $89.34 | -2.01% | 178,373,900 |
| Jun 2022 | $91.67 | $95.72 | $83.05 | $91.17 | -0.93% | 270,575,200 |
| May 2022 | $88.72 | $94.92 | $86.36 | $92.03 | +3.77% | 264,575,000 |
| Apr 2022 | $82.19 | $90.01 | $81.64 | $88.69 | +8.09% | 240,425,400 |
| Mar 2022 | $76.50 | $83.38 | $75.95 | $82.05 | +7.14% | 235,983,900 |
| Feb 2022 | $81.96 | $82.30 | $72.88 | $76.58 | -6.01% | 249,350,900 |
| Jan 2022 | $76.58 | $82.56 | $75.35 | $81.48 | +6.32% | 276,485,100 |
| Dec 2021 | $75.53 | $77.74 | $71.50 | $76.64 | +2.31% | 291,225,700 |
| Nov 2021 | $88.05 | $91.40 | $73.84 | $74.91 | -14.92% | 315,951,400 |
| Oct 2021 | $81.56 | $88.46 | $77.11 | $88.05 | +17.23% | 420,382,400 |
| Sep 2021 | $76.22 | $77.38 | $70.89 | $75.11 | -1.55% | 284,853,600 |
| Aug 2021 | $76.93 | $79.23 | $74.82 | $76.29 | -0.75% | 181,716,100 |
| Jul 2021 | $77.65 | $78.77 | $75.64 | $76.87 | -1.16% | 178,669,300 |
| Jun 2021 | $76.06 | $78.09 | $72.08 | $77.77 | +2.48% | 322,701,000 |
| May 2021 | $74.26 | $80.34 | $74.22 | $75.89 | +1.87% | 221,999,900 |
| Apr 2021 | $77.16 | $79.49 | $72.85 | $74.50 | -3.36% | 234,803,900 |
| Mar 2021 | $73.21 | $78.55 | $71.72 | $77.09 | +6.16% | 334,004,900 |
| Feb 2021 | $77.99 | $78.92 | $72.54 | $72.62 | -5.77% | 212,067,400 |
| Jan 2021 | $82.00 | $85.60 | $76.39 | $77.07 | -5.78% | 193,604,800 |
| Dec 2020 | $80.95 | $83.94 | $77.74 | $81.80 | +1.75% | 192,566,700 |
| Nov 2020 | $76.45 | $85.17 | $75.64 | $80.39 | +6.89% | 170,872,700 |
| Oct 2020 | $83.18 | $83.34 | $73.94 | $75.21 | -9.33% | 186,057,200 |
| Sep 2020 | $85.35 | $87.80 | $81.70 | $82.95 | -2.72% | 179,237,900 |
| Aug 2020 | $82.15 | $86.29 | $80.03 | $85.27 | +6.27% | 148,655,400 |
| Jul 2020 | $77.43 | $81.68 | $76.04 | $80.24 | +3.76% | 175,648,400 |
| Jun 2020 | $80.18 | $83.51 | $73.57 | $77.33 | -4.20% | 241,231,600 |
| May 2020 | $78.86 | $81.00 | $75.43 | $80.72 | +1.74% | 209,598,600 |
| Apr 2020 | $74.66 | $84.67 | $72.99 | $79.34 | +3.12% | 244,121,400 |
| Mar 2020 | $77.13 | $83.07 | $65.25 | $76.94 | +0.50% | 390,649,700 |
| Feb 2020 | $86.04 | $89.20 | $74.18 | $76.56 | -10.39% | 263,424,100 |
| Jan 2020 | $91.08 | $92.14 | $84.71 | $85.44 | -6.06% | 195,634,200 |
| Dec 2019 | $87.54 | $92.64 | $86.50 | $90.95 | +4.32% | 151,362,600 |
| Nov 2019 | $87.07 | $87.87 | $82.67 | $87.18 | +0.60% | 165,051,200 |
| Oct 2019 | $84.18 | $86.99 | $80.25 | $86.66 | +2.95% | 183,698,400 |
| Sep 2019 | $86.24 | $87.17 | $78.85 | $84.18 | -2.65% | 179,567,000 |
| Aug 2019 | $83.06 | $87.35 | $82.16 | $86.47 | +4.19% | 179,273,710 |
| Jul 2019 | $84.33 | $87.07 | $78.63 | $82.99 | -1.03% | 221,843,700 |
| Jun 2019 | $79.65 | $86.50 | $79.52 | $83.85 | +5.86% | 225,784,100 |
| May 2019 | $78.69 | $81.94 | $76.80 | $79.21 | +0.64% | 204,567,200 |
| Apr 2019 | $83.73 | $83.85 | $72.23 | $78.71 | -5.36% | 259,664,600 |
| Mar 2019 | $81.76 | $83.47 | $79.05 | $83.17 | +2.31% | 202,303,500 |
| Feb 2019 | $75.97 | $81.76 | $75.33 | $81.29 | +9.22% | 189,680,000 |
| Jan 2019 | $75.29 | $76.50 | $72.05 | $74.43 | -2.59% | 291,468,700 |
| Dec 2018 | $79.52 | $80.19 | $70.89 | $76.41 | -3.69% | 284,095,500 |
| Nov 2018 | $73.80 | $79.49 | $70.12 | $79.34 | +7.78% | 273,074,300 |
| Oct 2018 | $71.07 | $74.49 | $66.10 | $73.61 | +3.76% | 279,961,100 |
| Sep 2018 | $68.37 | $71.58 | $67.91 | $70.94 | +3.43% | 145,425,900 |
| Aug 2018 | $65.71 | $70.25 | $64.87 | $68.59 | +4.13% | 175,830,200 |
| Jul 2018 | $60.55 | $66.12 | $59.92 | $65.87 | +8.52% | 173,111,300 |
| Jun 2018 | $59.89 | $62.96 | $59.62 | $60.70 | +1.97% | 231,134,400 |
| May 2018 | $59.00 | $60.08 | $56.26 | $59.53 | +1.12% | 208,457,500 |
| Apr 2018 | $54.40 | $61.00 | $52.83 | $58.87 | +8.08% | 273,764,000 |
| Mar 2018 | $54.26 | $56.13 | $52.97 | $54.47 | +0.46% | 240,257,400 |
| Feb 2018 | $59.17 | $60.34 | $53.36 | $54.22 | -8.49% | 269,130,900 |
| Jan 2018 | $56.59 | $63.78 | $55.96 | $59.25 | +5.30% | 291,040,200 |
| Dec 2017 | $55.40 | $57.37 | $54.19 | $56.27 | +1.81% | 233,914,300 |
| Nov 2017 | $55.54 | $56.72 | $53.63 | $55.27 | +0.33% | 258,822,600 |
| Oct 2017 | $64.21 | $64.90 | $54.41 | $55.09 | -13.96% | 243,561,400 |
| Sep 2017 | $63.79 | $66.41 | $63.33 | $64.03 | +0.27% | 160,862,600 |
| Aug 2017 | $64.04 | $64.27 | $61.16 | $63.86 | -0.03% | 160,248,100 |
| Jul 2017 | $63.85 | $64.80 | $61.72 | $63.88 | -0.33% | 167,165,100 |
| Jun 2017 | $65.09 | $66.40 | $62.69 | $64.09 | -1.57% | 215,621,900 |
| May 2017 | $62.25 | $65.49 | $62.10 | $65.11 | +4.46% | 200,206,800 |
| Apr 2017 | $63.43 | $64.15 | $61.87 | $62.33 | -1.90% | 152,211,300 |
| Mar 2017 | $66.07 | $66.80 | $62.81 | $63.54 | -3.54% | 215,757,500 |
| Feb 2017 | $62.06 | $66.16 | $61.56 | $65.87 | +6.26% | 183,480,300 |
| Jan 2017 | $59.15 | $63.24 | $59.05 | $61.99 | +5.30% | 261,983,200 |
| Dec 2016 | $61.30 | $63.03 | $58.56 | $58.87 | -3.79% | 207,774,100 |
| Nov 2016 | $59.00 | $65.46 | $58.29 | $61.19 | +4.21% | 229,254,700 |
| Oct 2016 | $62.22 | $64.86 | $58.37 | $58.72 | -5.91% | 239,072,000 |
| Sep 2016 | $62.70 | $63.49 | $61.12 | $62.41 | -0.61% | 199,735,700 |
| Aug 2016 | $58.83 | $64.00 | $57.18 | $62.79 | +7.04% | 258,569,800 |
| Jul 2016 | $57.54 | $59.95 | $57.42 | $58.66 | +1.82% | 161,761,600 |
| Jun 2016 | $56.20 | $57.87 | $55.10 | $57.61 | +2.40% | 217,864,800 |
| May 2016 | $54.85 | $56.84 | $53.06 | $56.26 | +2.59% | 170,514,400 |
| Apr 2016 | $52.50 | $57.40 | $52.44 | $54.84 | +3.65% | 182,535,300 |
| Mar 2016 | $50.39 | $53.60 | $50.09 | $52.91 | +5.38% | 207,863,300 |
| Feb 2016 | $50.39 | $51.13 | $47.97 | $50.21 | -0.91% | 236,501,100 |
| Jan 2016 | $52.01 | $53.47 | $48.98 | $50.67 | -4.07% | 254,942,700 |
| Dec 2015 | $53.77 | $54.99 | $51.20 | $52.82 | -0.36% | 227,311,200 |
| Nov 2015 | $54.69 | $55.77 | $52.13 | $53.01 | -3.02% | 174,650,700 |
| Oct 2015 | $49.35 | $55.64 | $48.35 | $54.66 | +10.67% | 297,840,200 |
| Sep 2015 | $52.66 | $54.50 | $48.09 | $49.39 | -8.28% | 300,373,300 |
| Aug 2015 | $59.30 | $60.07 | $45.69 | $53.85 | -8.67% | 250,910,700 |
| Jul 2015 | $56.93 | $59.33 | $55.83 | $58.96 | +3.57% | 190,683,400 |
| Jun 2015 | $60.85 | $61.70 | $56.71 | $56.93 | -6.50% | 217,515,700 |
| May 2015 | $59.76 | $61.38 | $58.85 | $60.89 | +2.23% | 194,743,500 |
| Apr 2015 | $57.26 | $60.48 | $56.22 | $59.56 | +3.62% | 257,490,300 |
| Mar 2015 | $58.54 | $59.71 | $55.64 | $57.48 | -1.81% | 269,546,900 |
| Feb 2015 | $60.50 | $61.06 | $57.73 | $58.54 | -2.89% | 199,331,200 |
| Jan 2015 | $57.22 | $63.62 | $57.03 | $60.28 | +6.15% | 231,754,300 |
| Dec 2014 | $60.40 | $62.20 | $56.56 | $56.79 | -5.98% | 229,006,600 |
| Nov 2014 | $57.95 | $60.87 | $57.57 | $60.40 | +4.25% | 179,364,400 |
| Oct 2014 | $59.09 | $60.51 | $52.49 | $57.94 | -2.26% | 301,245,900 |
| Sep 2014 | $59.73 | $61.33 | $58.55 | $59.28 | -1.38% | 192,370,800 |
| Aug 2014 | $56.58 | $60.58 | $55.57 | $60.11 | +5.94% | 163,270,200 |
| Jul 2014 | $57.70 | $59.65 | $56.72 | $56.74 | -1.92% | 169,185,300 |
| Jun 2014 | $57.91 | $59.32 | $57.24 | $57.85 | -0.02% | 184,139,900 |
| May 2014 | $58.55 | $59.84 | $54.40 | $57.86 | -1.20% | 207,700,100 |
| Apr 2014 | $56.65 | $59.00 | $54.70 | $58.56 | +3.15% | 231,378,100 |
| Mar 2014 | $56.10 | $57.65 | $53.57 | $56.77 | -0.39% | 236,574,500 |
| Feb 2014 | $52.91 | $57.46 | $51.92 | $56.99 | +7.59% | 237,342,400 |
| Jan 2014 | $49.88 | $54.10 | $49.30 | $52.97 | +5.83% | 313,826,100 |
| Dec 2013 | $49.74 | $50.42 | $47.61 | $50.05 | +0.44% | 211,085,000 |
| Nov 2013 | $44.87 | $49.95 | $44.62 | $49.83 | +10.51% | 258,884,700 |
| Oct 2013 | $48.92 | $49.23 | $45.08 | $45.09 | -5.29% | 356,726,300 |
| Sep 2013 | $47.52 | $48.71 | $47.01 | $47.61 | +0.68% | 293,099,200 |
| Aug 2013 | $48.44 | $48.85 | $46.47 | $47.29 | -1.83% | 214,828,900 |
| Jul 2013 | $46.26 | $49.08 | $46.03 | $48.17 | +3.70% | 253,298,600 |
| Jun 2013 | $48.93 | $50.16 | $46.06 | $46.45 | -0.54% | 472,136,600 |
| May 2013 | $44.80 | $48.64 | $44.60 | $46.70 | -0.64% | 427,841,200 |
| Apr 2013 | $44.00 | $48.79 | $43.77 | $47.00 | +6.33% | 308,632,200 |
| Mar 2013 | $42.33 | $45.42 | $42.33 | $44.20 | +3.44% | 385,637,800 |
| Feb 2013 | $42.24 | $43.45 | $40.83 | $42.73 | -1.20% | 323,510,800 |
| Jan 2013 | $41.86 | $43.77 | $40.94 | $43.25 | +5.64% | 290,067,700 |
| Dec 2012 | $44.47 | $45.49 | $40.02 | $40.94 | -7.58% | 263,124,000 |
| Nov 2012 | $45.75 | $46.55 | $42.36 | $44.30 | -2.91% | 240,683,900 |
| Oct 2012 | $44.97 | $48.00 | $44.97 | $45.63 | +1.17% | 214,635,900 |
| Sep 2012 | $43.14 | $45.70 | $42.87 | $45.10 | +4.76% | 222,406,300 |
| Aug 2012 | $44.45 | $44.79 | $42.61 | $43.05 | -2.54% | 234,490,400 |
| Jul 2012 | $41.25 | $45.17 | $41.06 | $44.17 | +5.80% | 350,865,700 |
| Jun 2012 | $37.18 | $41.75 | $37.02 | $41.75 | +11.10% | 398,750,800 |
| May 2012 | $38.94 | $39.50 | $37.02 | $37.58 | -4.23% | 257,387,500 |
| Apr 2012 | $38.30 | $39.46 | $37.77 | $39.24 | +2.19% | 261,500,900 |
| Mar 2012 | $38.15 | $39.00 | $36.91 | $38.40 | +0.60% | 370,644,100 |
| Feb 2012 | $38.55 | $39.01 | $37.78 | $38.17 | -0.26% | 249,387,800 |
| Jan 2012 | $37.88 | $39.43 | $37.81 | $38.27 | +1.51% | 283,497,600 |
| Dec 2011 | $35.73 | $37.90 | $34.86 | $37.70 | +5.45% | 374,356,600 |
| Nov 2011 | $33.81 | $36.25 | $33.13 | $35.75 | +3.62% | 330,471,300 |
| Oct 2011 | $32.59 | $35.50 | $30.54 | $34.50 | +5.50% | 366,412,200 |
| Sep 2011 | $33.05 | $33.49 | $30.71 | $32.70 | -1.21% | 369,272,200 |
| Aug 2011 | $34.25 | $34.29 | $29.47 | $33.10 | -3.02% | 509,896,300 |
| Jul 2011 | $35.17 | $36.56 | $34.05 | $34.13 | -3.29% | 240,770,100 |
| Jun 2011 | $36.60 | $36.75 | $34.37 | $35.29 | -3.97% | 256,501,900 |
| May 2011 | $36.44 | $37.65 | $36.07 | $36.75 | +2.23% | 294,946,000 |
| Apr 2011 | $33.05 | $36.25 | $33.00 | $35.95 | +8.91% | 308,624,500 |
| Mar 2011 | $32.60 | $33.48 | $31.06 | $33.01 | +1.35% | 403,814,500 |
| Feb 2011 | $33.34 | $34.04 | $31.85 | $32.57 | -1.81% | 308,279,300 |
| Jan 2011 | $36.29 | $37.62 | $33.00 | $33.17 | -7.96% | 477,954,200 |
| Dec 2010 | $34.75 | $36.99 | $34.67 | $36.04 | +4.55% | 281,068,400 |
| Nov 2010 | $36.44 | $36.95 | $33.94 | $34.47 | -5.07% | 344,612,500 |
| Oct 2010 | $36.76 | $37.68 | $36.02 | $36.31 | -1.36% | 215,040,400 |
| Sep 2010 | $35.38 | $37.58 | $34.52 | $36.81 | +4.69% | 271,490,900 |
| Aug 2010 | $34.86 | $35.99 | $34.02 | $35.16 | +2.03% | 237,706,200 |
| Jul 2010 | $34.83 | $36.80 | $33.65 | $34.46 | -1.46% | 302,902,600 |
| Jun 2010 | $33.43 | $36.25 | $32.99 | $34.97 | +3.80% | 391,069,000 |
| May 2010 | $35.29 | $36.36 | $30.70 | $33.69 | -3.85% | 447,318,800 |
| Apr 2010 | $37.64 | $37.97 | $33.54 | $35.04 | -6.18% | 393,998,200 |
| Mar 2010 | $37.03 | $39.04 | $36.10 | $37.35 | +1.27% | 328,490,900 |
| Feb 2010 | $38.56 | $39.72 | $35.76 | $36.88 | -3.40% | 304,944,300 |
| Jan 2010 | $36.82 | $41.56 | $36.55 | $38.18 | +4.49% | 321,365,000 |
| Dec 2009 | $36.29 | $38.42 | $36.10 | $36.54 | +0.91% | 297,669,900 |
| Nov 2009 | $31.12 | $36.96 | $30.29 | $36.21 | +17.07% | 471,939,000 |
| Oct 2009 | $31.74 | $34.18 | $30.83 | $30.93 | -2.21% | 470,937,400 |
| Sep 2009 | $32.29 | $32.93 | $29.94 | $31.63 | -2.47% | 330,974,900 |
| Aug 2009 | $30.45 | $33.05 | $28.69 | $32.43 | +8.06% | 303,758,400 |
| Jul 2009 | $28.10 | $31.18 | $25.05 | $30.01 | +7.33% | 420,149,600 |
| Jun 2009 | $27.71 | $28.05 | $24.37 | $27.96 | +1.38% | 449,657,600 |
| May 2009 | $24.23 | $27.61 | $23.81 | $27.58 | +13.78% | 411,954,300 |
| Apr 2009 | $26.49 | $27.60 | $22.33 | $24.24 | -9.38% | 439,428,700 |
| Mar 2009 | $23.82 | $28.12 | $20.05 | $26.75 | +10.54% | 583,899,600 |
| Feb 2009 | $28.09 | $30.93 | $24.17 | $24.20 | -15.24% | 302,360,100 |
| Jan 2009 | $30.46 | $31.66 | $26.87 | $28.55 | -6.09% | 264,083,500 |
| Dec 2008 | $26.37 | $30.57 | $24.13 | $30.40 | +13.77% | 329,424,900 |
| Nov 2008 | $30.93 | $31.30 | $22.82 | $26.72 | -13.67% | 288,339,600 |
| Oct 2008 | $31.42 | $32.46 | $23.64 | $30.95 | -1.93% | 471,992,600 |
| Sep 2008 | $35.62 | $36.08 | $30.34 | $31.56 | -11.52% | 344,917,200 |
| Aug 2008 | $33.09 | $36.73 | $32.74 | $35.67 | +8.42% | 259,200,800 |
| Jul 2008 | $37.41 | $38.90 | $31.15 | $32.90 | -12.71% | 509,814,600 |
| Jun 2008 | $38.96 | $38.99 | $34.49 | $37.69 | -3.26% | 422,514,200 |
| May 2008 | $37.81 | $40.45 | $37.80 | $38.96 | +2.42% | 284,443,800 |
| Apr 2008 | $38.39 | $42.24 | $36.80 | $38.04 | +0.24% | 576,788,200 |
| Mar 2008 | $44.69 | $45.73 | $36.82 | $37.95 | -14.33% | 381,436,300 |
| Feb 2008 | $46.20 | $48.23 | $44.13 | $44.30 | -3.90% | 301,121,200 |
| Jan 2008 | $58.15 | $61.18 | $42.32 | $46.10 | -20.67% | 468,740,686 |
| Dec 2007 | $58.76 | $61.62 | $56.56 | $58.11 | -2.11% | 225,164,100 |
| Nov 2007 | $57.88 | $60.49 | $54.06 | $59.36 | +1.89% | 304,006,900 |
| Oct 2007 | $52.00 | $58.26 | $51.44 | $58.26 | +12.71% | 241,501,200 |
| Sep 2007 | $50.49 | $52.83 | $48.80 | $51.69 | +3.03% | 190,699,100 |
| Aug 2007 | $49.62 | $52.74 | $48.11 | $50.17 | +1.05% | 252,721,100 |
| Jul 2007 | $49.91 | $53.81 | $48.43 | $49.65 | -0.30% | 290,100,100 |
| Jun 2007 | $52.52 | $52.90 | $48.00 | $49.80 | -5.05% | 266,895,900 |
| May 2007 | $51.65 | $55.14 | $50.54 | $52.45 | +1.96% | 234,967,300 |
| Apr 2007 | $44.59 | $52.63 | $44.52 | $51.44 | +16.46% | 254,707,600 |
| Mar 2007 | $43.95 | $44.96 | $42.76 | $44.17 | +0.05% | 227,502,100 |
| Feb 2007 | $44.90 | $45.44 | $42.35 | $44.15 | -1.34% | 204,242,200 |
| Jan 2007 | $44.03 | $46.55 | $43.16 | $44.75 | +2.64% | 180,030,000 |
| Dec 2006 | $44.65 | $45.90 | $42.63 | $43.60 | -2.04% | 199,626,300 |
| Nov 2006 | $45.99 | $46.32 | $42.29 | $44.51 | -2.00% | 263,203,400 |
| Oct 2006 | $42.15 | $46.37 | $41.24 | $45.42 | +8.40% | 221,964,000 |
| Sep 2006 | $40.52 | $42.51 | $39.90 | $41.90 | +3.33% | 166,075,900 |
| Aug 2006 | $40.38 | $41.78 | $38.00 | $40.55 | +0.70% | 247,940,100 |
| Jul 2006 | $36.90 | $41.76 | $35.00 | $40.27 | +10.54% | 232,498,200 |
| Jun 2006 | $33.51 | $36.84 | $33.12 | $36.43 | +9.43% | 195,372,800 |
| May 2006 | $34.67 | $35.51 | $32.75 | $33.29 | -3.28% | 222,474,000 |
| Apr 2006 | $35.47 | $36.09 | $33.55 | $34.42 | -2.30% | 168,042,500 |
| Mar 2006 | $35.05 | $36.50 | $34.34 | $35.23 | +1.06% | 154,184,700 |
| Feb 2006 | $34.27 | $36.65 | $33.56 | $34.86 | +1.04% | 173,221,200 |
| Jan 2006 | $32.52 | $34.88 | $31.81 | $34.50 | +8.46% | 207,371,500 |
| Dec 2005 | $29.69 | $32.54 | $27.99 | $31.81 | +8.20% | 264,066,600 |
| Nov 2005 | $28.45 | $31.01 | $27.80 | $29.40 | +4.18% | 230,326,900 |
| Oct 2005 | $27.42 | $28.26 | $25.50 | $28.22 | +3.71% | 206,969,900 |
| Sep 2005 | $28.32 | $29.46 | $26.97 | $27.21 | -3.61% | 176,674,300 |
| Aug 2005 | $31.24 | $31.46 | $27.15 | $28.23 | -9.11% | 260,286,400 |
| Jul 2005 | $30.80 | $32.34 | $29.90 | $31.06 | +0.84% | 147,348,400 |
| Jun 2005 | $32.20 | $32.50 | $30.40 | $30.80 | -5.06% | 153,865,200 |
| May 2005 | $34.07 | $35.20 | $32.22 | $32.44 | -4.31% | 160,131,900 |
| Apr 2005 | $32.67 | $36.26 | $31.98 | $33.90 | +4.73% | 213,800,400 |
| Mar 2005 | $32.06 | $32.60 | $31.10 | $32.37 | +2.11% | 165,177,800 |
| Feb 2005 | $28.06 | $32.61 | $27.78 | $31.70 | +13.01% | 264,624,900 |
| Jan 2005 | $31.99 | $32.23 | $27.48 | $28.05 | -12.73% | 260,178,300 |
| Dec 2004 | $27.85 | $32.66 | $27.32 | $32.14 | +14.70% | 351,847,500 |
| Nov 2004 | $29.34 | $29.80 | $25.60 | $28.02 | -10.51% | 574,756,400 |
| Oct 2004 | $33.69 | $34.32 | $29.75 | $31.31 | -5.12% | 464,902,600 |
| Sep 2004 | $44.59 | $45.99 | $32.46 | $33.00 | -26.62% | 254,528,900 |
| Aug 2004 | $45.30 | $47.00 | $43.46 | $44.97 | -0.84% | 108,660,600 |
| Jul 2004 | $47.65 | $47.73 | $44.25 | $45.35 | -4.53% | 113,875,100 |
| Jun 2004 | $47.40 | $48.78 | $46.88 | $47.50 | +0.42% | 111,659,200 |
| May 2004 | $47.01 | $48.41 | $45.83 | $47.30 | +0.64% | 102,342,900 |
| Apr 2004 | $44.55 | $47.60 | $44.28 | $47.00 | +6.36% | 126,639,900 |
| Mar 2004 | $48.42 | $48.60 | $42.85 | $44.19 | -8.09% | 170,149,400 |
| Feb 2004 | $47.88 | $49.33 | $47.36 | $48.08 | +1.01% | 130,519,000 |
| Jan 2004 | $48.88 | $48.88 | $45.50 | $47.60 | +3.03% | 177,326,500 |
| Dec 2003 | $41.25 | $46.30 | $41.17 | $46.20 | +13.79% | 193,220,300 |
| Nov 2003 | $44.25 | $47.15 | $40.57 | $40.60 | -8.25% | 243,270,600 |
| Oct 2003 | $50.76 | $51.95 | $43.88 | $44.25 | -12.58% | 203,759,200 |
| Sep 2003 | $50.15 | $54.30 | $50.11 | $50.62 | +0.60% | 127,555,600 |
| Aug 2003 | $55.01 | $56.05 | $49.48 | $50.32 | -8.97% | 136,645,500 |
| Jul 2003 | $60.50 | $62.69 | $55.03 | $55.28 | -8.70% | 137,316,200 |
| Jun 2003 | $55.80 | $63.50 | $55.63 | $60.55 | +8.94% | 138,340,200 |
| May 2003 | $58.18 | $59.88 | $54.10 | $55.58 | -4.47% | 133,527,600 |
| Apr 2003 | $55.10 | $59.55 | $54.65 | $58.18 | +6.21% | 128,384,400 |
| Mar 2003 | $53.35 | $56.85 | $49.90 | $54.78 | +3.85% | 121,485,900 |
| Feb 2003 | $55.40 | $56.31 | $51.60 | $52.75 | -4.77% | 95,217,700 |
| Jan 2003 | $57.58 | $60.24 | $51.50 | $55.39 | -2.16% | 126,663,800 |
| Dec 2002 | $60.45 | $60.45 | $55.16 | $56.61 | -4.71% | 137,509,400 |
| Nov 2002 | $53.50 | $60.48 | $51.80 | $59.41 | +9.53% | 156,086,000 |
| Oct 2002 | $46.30 | $55.24 | $43.35 | $54.24 | +18.66% | 175,238,500 |
| Sep 2002 | $49.45 | $50.33 | $44.44 | $45.71 | -9.52% | 115,605,400 |
| Aug 2002 | $49.36 | $54.00 | $45.35 | $50.52 | +1.85% | 120,721,100 |
| Jul 2002 | $50.89 | $51.09 | $38.50 | $49.60 | -2.05% | 243,775,300 |
| Jun 2002 | $57.05 | $57.19 | $47.60 | $50.64 | -11.31% | 148,994,400 |
| May 2002 | $54.05 | $58.85 | $54.01 | $57.10 | +5.08% | 118,996,300 |
| Apr 2002 | $57.63 | $57.80 | $51.00 | $54.34 | -5.63% | 183,171,600 |
| Mar 2002 | $61.36 | $64.50 | $56.98 | $57.58 | -6.11% | 142,506,400 |
| Feb 2002 | $59.02 | $62.48 | $57.70 | $61.33 | +3.63% | 102,661,600 |
| Jan 2002 | $59.15 | $59.88 | $56.71 | $59.18 | +0.65% | 137,696,200 |
| Dec 2001 | $67.15 | $68.57 | $56.80 | $58.80 | -13.21% | 176,851,900 |
| Nov 2001 | $63.81 | $68.13 | $63.42 | $67.75 | +6.17% | 100,663,000 |
| Oct 2001 | $66.85 | $70.60 | $63.80 | $63.81 | -4.19% | 110,665,200 |
| Sep 2001 | $65.20 | $69.24 | $60.85 | $66.60 | +2.30% | 117,869,500 |
| Aug 2001 | $67.51 | $71.50 | $64.76 | $65.10 | -4.24% | 99,197,800 |
| Jul 2001 | $64.05 | $69.00 | $60.35 | $67.98 | +6.37% | 137,594,500 |
| Jun 2001 | $72.00 | $75.85 | $63.65 | $63.91 | -12.44% | 122,140,200 |
| May 2001 | $75.15 | $79.16 | $71.76 | $72.99 | -3.92% | 100,152,000 |
| Apr 2001 | $75.40 | $80.85 | $72.00 | $75.97 | +0.09% | 112,501,100 |
| Mar 2001 | $80.50 | $81.03 | $66.00 | $75.90 | -5.36% | 131,672,500 |
| Feb 2001 | $82.75 | $85.55 | $76.40 | $80.20 | -2.41% | 98,160,000 |
| Jan 2001 | $93.38 | $95.25 | $78.56 | $82.18 | -12.22% | 145,525,200 |
| Dec 2000 | $91.50 | $95.94 | $88.13 | $93.63 | +1.01% | 118,397,100 |
| Nov 2000 | $90.00 | $96.69 | $86.31 | $92.69 | +3.06% | 146,738,900 |
| Oct 2000 | $74.31 | $90.00 | $72.88 | $89.94 | +20.82% | 143,477,900 |
| Sep 2000 | $69.06 | $74.88 | $65.00 | $74.44 | +6.51% | 84,915,800 |
| Aug 2000 | $71.13 | $75.44 | $69.88 | $69.89 | -2.46% | 79,607,700 |
| Jul 2000 | $76.06 | $77.38 | $63.00 | $71.66 | -6.48% | 123,607,200 |
| Jun 2000 | $74.06 | $76.73 | $68.69 | $76.63 | +2.68% | 97,918,300 |
| May 2000 | $69.50 | $75.38 | $66.75 | $74.63 | +7.37% | 94,935,900 |
| Apr 2000 | $62.38 | $72.81 | $61.88 | $69.50 | +11.87% | 120,776,200 |
| Mar 2000 | $61.50 | $65.94 | $52.00 | $62.13 | +0.91% | 186,338,800 |
| Feb 2000 | $77.38 | $78.38 | $59.19 | $61.56 | -21.70% | 133,126,800 |
| Jan 2000 | $68.63 | $79.00 | $64.75 | $78.63 | +17.02% | 127,423,900 |
| Dec 1999 | $77.75 | $78.13 | $66.06 | $67.19 | -14.61% | 110,562,800 |
| Nov 1999 | $78.94 | $81.12 | $74.38 | $78.69 | -1.10% | 77,711,500 |
| Oct 1999 | $64.69 | $80.25 | $64.50 | $79.56 | +22.76% | 106,157,900 |
| Sep 1999 | $67.19 | $70.88 | $64.06 | $64.81 | -3.53% | 86,831,700 |
| Aug 1999 | $67.25 | $70.63 | $60.94 | $67.19 | -0.65% | 110,027,500 |
| Jul 1999 | $73.88 | $75.94 | $66.25 | $67.63 | -8.15% | 86,754,700 |
| Jun 1999 | $68.00 | $74.00 | $66.00 | $73.63 | +8.87% | 109,125,500 |
| May 1999 | $70.00 | $75.81 | $66.00 | $67.63 | -3.91% | 111,920,700 |
| Apr 1999 | $80.44 | $85.06 | $67.94 | $70.38 | -12.17% | 124,109,800 |
| Mar 1999 | $81.63 | $87.38 | $78.00 | $80.13 | -1.69% | 102,914,800 |
| Feb 1999 | $73.25 | $82.00 | $72.19 | $81.50 | +11.07% | 92,713,000 |
| Jan 1999 | $74.31 | $77.00 | $67.47 | $73.38 | -0.51% | 122,417,200 |
| Dec 1998 | $77.13 | $80.88 | $70.75 | $73.75 | -4.92% | 119,599,200 |
| Nov 1998 | $67.88 | $79.94 | $67.25 | $77.56 | +14.85% | 99,138,400 |
| Oct 1998 | $64.38 | $68.38 | $60.81 | $67.53 | +4.24% | 141,788,800 |
| Sep 1998 | $58.94 | $69.34 | $57.50 | $64.78 | +11.75% | 151,542,400 |
| Aug 1998 | $61.44 | $67.53 | $57.53 | $57.97 | -6.17% | 141,802,000 |
| Jul 1998 | $66.31 | $69.56 | $60.41 | $61.78 | -7.62% | 125,011,800 |
| Jun 1998 | $58.50 | $67.13 | $55.75 | $66.88 | +14.32% | 122,690,600 |
| May 1998 | $59.88 | $60.78 | $57.19 | $58.50 | -2.90% | 90,498,400 |
| Apr 1998 | $64.19 | $66.50 | $55.75 | $60.25 | -6.00% | 124,309,400 |
| Mar 1998 | $63.78 | $66.41 | $61.84 | $64.09 | +0.49% | 83,686,600 |
| Feb 1998 | $60.00 | $65.44 | $56.25 | $63.78 | +8.68% | 106,328,800 |
| Jan 1998 | $52.63 | $59.50 | $50.69 | $58.69 | +10.73% | 128,288,600 |
| Dec 1997 | $47.50 | $53.94 | $47.38 | $53.00 | +11.78% | 138,220,600 |
| Nov 1997 | $45.22 | $47.59 | $42.66 | $47.41 | +6.25% | 127,924,200 |
| Oct 1997 | $50.97 | $51.75 | $40.31 | $44.63 | -10.69% | 177,618,000 |
| Sep 1997 | $46.06 | $52.31 | $45.44 | $49.97 | +8.85% | 116,098,200 |
| Aug 1997 | $51.97 | $52.22 | $45.38 | $45.91 | -11.61% | 137,025,000 |
| Jul 1997 | $51.13 | $54.09 | $49.06 | $51.94 | +1.53% | 131,282,000 |
| Jun 1997 | $45.06 | $52.41 | $44.50 | $51.16 | +13.84% | 120,321,400 |
| May 1997 | $45.06 | $47.31 | $44.38 | $44.94 | -0.55% | 106,529,000 |
| Apr 1997 | $42.00 | $45.94 | $40.19 | $45.19 | +7.27% | 145,490,400 |
| Mar 1997 | $45.31 | $47.75 | $41.44 | $42.13 | -8.55% | 125,965,600 |
| Feb 1997 | $45.44 | $49.94 | $44.50 | $46.06 | +1.66% | 111,526,600 |
| Jan 1997 | $39.81 | $46.31 | $39.00 | $45.31 | +13.81% | 117,242,400 |
| Dec 1996 | $41.25 | $41.94 | $37.63 | $39.81 | -4.07% | 99,265,000 |
| Nov 1996 | $37.13 | $42.13 | $36.81 | $41.50 | +12.35% | 96,996,400 |
| Oct 1996 | $35.19 | $38.19 | $34.56 | $36.94 | +4.97% | 105,039,200 |
| Sep 1996 | $32.50 | $35.44 | $32.06 | $35.19 | +7.24% | 87,414,000 |
| Aug 1996 | $32.09 | $34.94 | $32.09 | $32.81 | +2.14% | 81,864,400 |
| Jul 1996 | $32.69 | $33.44 | $29.13 | $32.13 | -0.58% | 111,690,000 |
| Jun 1996 | $32.25 | $33.06 | $31.63 | $32.31 | 0.00% | 78,767,800 |
| May 1996 | $30.19 | $32.69 | $28.25 | $32.31 | +6.82% | 149,265,600 |
| Apr 1996 | $31.25 | $32.25 | $28.69 | $30.25 | -2.81% | 137,792,800 |
| Mar 1996 | $33.50 | $34.50 | $30.00 | $31.13 | -6.04% | 152,304,600 |
| Feb 1996 | $34.81 | $35.69 | $32.25 | $33.13 | -5.53% | 119,602,600 |
| Jan 1996 | $32.38 | $35.19 | $30.50 | $35.06 | +6.86% | 118,277,000 |
| Dec 1995 | $31.06 | $33.63 | $30.63 | $32.81 | +6.06% | 106,369,600 |
| Nov 1995 | $28.75 | $31.31 | $27.81 | $30.94 | +7.61% | 94,858,800 |
| Oct 1995 | $28.31 | $30.69 | $28.25 | $28.75 | +2.68% | 123,417,400 |
| Sep 1995 | $25.00 | $28.94 | $24.94 | $28.00 | +12.28% | 107,192,400 |
| Aug 1995 | $25.81 | $26.19 | $24.25 | $24.94 | -3.39% | 85,211,400 |
| Jul 1995 | $24.50 | $25.94 | $23.31 | $25.81 | +5.09% | 106,018,400 |
| Jun 1995 | $23.38 | $25.63 | $23.31 | $24.56 | +4.52% | 129,015,600 |
| May 1995 | $21.50 | $23.63 | $20.63 | $23.50 | +9.62% | 135,448,200 |
| Apr 1995 | $21.44 | $21.94 | $20.75 | $21.44 | +0.59% | 87,015,800 |
| Mar 1995 | $21.13 | $22.56 | $20.56 | $21.31 | +0.59% | 132,664,600 |
| Feb 1995 | $20.13 | $21.38 | $19.75 | $21.19 | +5.28% | 99,246,600 |
| Jan 1995 | $19.00 | $20.19 | $18.19 | $20.13 | +5.57% | 101,569,800 |
| Dec 1994 | $18.50 | $19.75 | $18.31 | $19.06 | +2.35% | 109,298,400 |
| Nov 1994 | $17.75 | $19.00 | $17.38 | $18.63 | +4.56% | 108,589,000 |
| Oct 1994 | $17.88 | $18.63 | $17.00 | $17.81 | 0.00% | 106,421,400 |
| Sep 1994 | $17.06 | $18.06 | $16.63 | $17.81 | +4.40% | 107,246,800 |
| Aug 1994 | $14.75 | $17.31 | $14.63 | $17.06 | +15.19% | 135,484,200 |
| Jul 1994 | $14.94 | $15.19 | $14.50 | $14.81 | -0.42% | 68,225,200 |
| Jun 1994 | $15.19 | $15.94 | $14.81 | $14.88 | -2.46% | 98,726,600 |
| May 1994 | $14.94 | $16.12 | $14.75 | $15.25 | +2.95% | 103,559,800 |
| Apr 1994 | $14.44 | $15.63 | $14.06 | $14.81 | -0.42% | 122,044,800 |
| Mar 1994 | $16.12 | $16.25 | $14.38 | $14.88 | -8.11% | 146,032,400 |
| Feb 1994 | $18.19 | $18.38 | $15.88 | $16.19 | -11.30% | 111,100,600 |
| Jan 1994 | $17.38 | $19.00 | $17.12 | $18.25 | +6.18% | 141,410,800 |
| Dec 1993 | $17.19 | $17.81 | $16.19 | $17.19 | +0.37% | 136,206,400 |
| Nov 1993 | $16.06 | $17.75 | $15.88 | $17.12 | +6.61% | 178,844,000 |
| Oct 1993 | $15.38 | $16.44 | $14.88 | $16.06 | +4.47% | 101,595,600 |
| Sep 1993 | $15.94 | $16.63 | $15.00 | $15.38 | -3.53% | 107,179,400 |
| Aug 1993 | $15.31 | $16.88 | $14.31 | $15.94 | +4.08% | 165,040,200 |
| Jul 1993 | $17.50 | $17.69 | $15.13 | $15.31 | -13.73% | 146,466,400 |
| Jun 1993 | $19.19 | $19.56 | $17.62 | $17.75 | -7.19% | 80,890,800 |
| May 1993 | $18.63 | $19.69 | $17.88 | $19.13 | +3.38% | 88,451,800 |
| Apr 1993 | $17.56 | $18.88 | $16.50 | $18.50 | +4.59% | 125,656,600 |
| Mar 1993 | $19.63 | $20.50 | $16.63 | $17.69 | -8.12% | 175,033,800 |
| Feb 1993 | $19.81 | $20.50 | $17.88 | $19.25 | -4.64% | 154,984,200 |
| Jan 1993 | $21.94 | $22.06 | $19.75 | $20.19 | -6.92% | 122,438,600 |
| Dec 1992 | $22.56 | $23.88 | $21.69 | $21.69 | -3.88% | 78,113,000 |
| Nov 1992 | $21.88 | $23.31 | $20.69 | $22.56 | +2.85% | 86,530,000 |
| Oct 1992 | $22.38 | $22.50 | $20.25 | $21.94 | -1.40% | 136,528,600 |
| Sep 1992 | $24.31 | $24.94 | $21.13 | $22.25 | -8.48% | 102,989,600 |
| Aug 1992 | $25.88 | $26.69 | $24.19 | $24.31 | -6.27% | 57,977,400 |
| Jul 1992 | $24.50 | $25.94 | $24.31 | $25.94 | +6.41% | 65,065,600 |
| Jun 1992 | $25.00 | $25.69 | $23.50 | $24.38 | -3.23% | 88,132,000 |
| May 1992 | $24.04 | $25.63 | $23.69 | $25.19 | +4.22% | 87,013,800 |
| Apr 1992 | $24.52 | $25.96 | $22.75 | $24.17 | -1.44% | 124,084,800 |
| Mar 1992 | $26.25 | $26.33 | $24.21 | $24.52 | -6.66% | 98,155,200 |
| Feb 1992 | $26.21 | $26.81 | $23.92 | $26.27 | +0.32% | 106,098,600 |
| Jan 1992 | $27.67 | $28.29 | $24.83 | $26.19 | -5.63% | 131,497,200 |
| Dec 1991 | $24.08 | $27.83 | $23.58 | $27.75 | +13.75% | 83,257,800 |
| Nov 1991 | $22.79 | $24.42 | $22.42 | $24.40 | +6.65% | 99,130,800 |
| Oct 1991 | $21.77 | $22.88 | $21.13 | $22.88 | +5.48% | 65,362,800 |
| Sep 1991 | $21.06 | $22.21 | $20.90 | $21.69 | +2.56% | 57,896,400 |
| Aug 1991 | $21.44 | $21.63 | $19.50 | $21.15 | -1.46% | 71,581,800 |
| Jul 1991 | $19.46 | $21.48 | $19.33 | $21.46 | +10.87% | 63,850,800 |
| Jun 1991 | $19.67 | $19.79 | $18.88 | $19.35 | -2.31% | 75,001,800 |
| May 1991 | $18.04 | $20.48 | $17.98 | $19.81 | +10.33% | 92,488,200 |
| Apr 1991 | $17.50 | $19.29 | $17.44 | $17.96 | +2.13% | 76,581,000 |
| Mar 1991 | $16.75 | $18.17 | $16.58 | $17.58 | +3.30% | 82,742,400 |
| Feb 1991 | $15.17 | $17.42 | $15.13 | $17.02 | +11.61% | 103,761,000 |
| Jan 1991 | $14.88 | $15.33 | $13.67 | $15.25 | +1.81% | 108,800,400 |
| Dec 1990 | $14.42 | $14.98 | $14.06 | $14.98 | +4.20% | 66,991,200 |
| Nov 1990 | $12.79 | $14.40 | $12.56 | $14.38 | +12.20% | 95,367,000 |
| Oct 1990 | $12.83 | $13.75 | $12.46 | $12.81 | +0.99% | 122,428,200 |
| Sep 1990 | $13.46 | $13.79 | $12.06 | $12.69 | -6.74% | 92,619,600 |
| Aug 1990 | $14.90 | $15.00 | $12.58 | $13.60 | -8.41% | 134,635,200 |
| Jul 1990 | $14.44 | $15.19 | $14.13 | $14.85 | +2.74% | 89,713,200 |
| Jun 1990 | $13.88 | $14.54 | $13.25 | $14.46 | +4.83% | 91,866,600 |
| May 1990 | $12.31 | $14.23 | $12.13 | $13.79 | +12.97% | 116,917,200 |
| Apr 1990 | $11.50 | $12.52 | $11.46 | $12.21 | +5.40% | 74,394,000 |
| Mar 1990 | $11.42 | $12.06 | $11.19 | $11.58 | +1.65% | 99,710,400 |
| Feb 1990 | $12.13 | $12.23 | $11.17 | $11.40 | -5.36% | 86,976,000 |
| Jan 1990 | $12.88 | $13.33 | $11.63 | $12.04 | -6.77% | 132,612,600 |
| Dec 1989 | $13.23 | $13.25 | $12.46 | $12.92 | -1.74% | 75,938,400 |
| Nov 1989 | $12.85 | $13.46 | $12.52 | $13.15 | +1.28% | 86,504,400 |
| Oct 1989 | $12.54 | $13.27 | $11.48 | $12.98 | +2.81% | 108,007,800 |
| Sep 1989 | $12.31 | $12.71 | $11.65 | $12.63 | +3.24% | 94,827,000 |
| Aug 1989 | $12.65 | $12.77 | $12.10 | $12.23 | -3.45% | 101,026,800 |
| Jul 1989 | $11.15 | $12.98 | $11.10 | $12.67 | +13.65% | 91,636,800 |
| Jun 1989 | $11.54 | $12.04 | $11.00 | $11.15 | -3.60% | 102,835,800 |
| May 1989 | $11.29 | $12.15 | $11.13 | $11.56 | +1.65% | 110,057,400 |
| Apr 1989 | $10.81 | $11.48 | $10.77 | $11.38 | +5.00% | 79,087,200 |
| Mar 1989 | $10.67 | $11.08 | $10.48 | $10.83 | +1.76% | 97,007,400 |
| Feb 1989 | $10.77 | $11.06 | $10.21 | $10.65 | -2.11% | 87,702,000 |
| Jan 1989 | $9.54 | $10.90 | $9.38 | $10.88 | +12.99% | 128,399,400 |
| Dec 1988 | $9.42 | $9.79 | $9.29 | $9.63 | +2.21% | 68,485,800 |
| Nov 1988 | $9.54 | $9.92 | $8.92 | $9.42 | -1.31% | 86,903,400 |
| Oct 1988 | $9.67 | $9.94 | $9.38 | $9.54 | -0.87% | 83,559,000 |
| Sep 1988 | $9.06 | $9.83 | $8.98 | $9.63 | +5.24% | 92,799,000 |
| Aug 1988 | $9.38 | $9.71 | $8.94 | $9.15 | -1.79% | 100,262,400 |
| Jul 1988 | $9.44 | $9.44 | $8.92 | $9.31 | -0.67% | 80,460,000 |
| Jun 1988 | $8.98 | $9.48 | $8.92 | $9.38 | +5.39% | 128,444,400 |
| May 1988 | $8.79 | $8.92 | $8.14 | $8.90 | +1.75% | 127,794,600 |
| Apr 1988 | $8.67 | $9.29 | $8.61 | $8.74 | +0.24% | 177,307,200 |
| Mar 1988 | $9.19 | $9.25 | $8.64 | $8.72 | -5.06% | 181,960,200 |
| Feb 1988 | $8.49 | $9.24 | $8.28 | $9.19 | +9.70% | 152,767,800 |
| Jan 1988 | $8.89 | $9.47 | $8.00 | $8.38 | -4.89% | 179,249,400 |
| Dec 1987 | $9.53 | $9.53 | $8.49 | $8.81 | -6.77% | 185,668,200 |
| Nov 1987 | $10.00 | $10.28 | $9.28 | $9.44 | -6.34% | 207,250,200 |
| Oct 1987 | $11.48 | $11.65 | $8.17 | $10.08 | -12.27% | 362,894,400 |
| Sep 1987 | $11.56 | $12.39 | $10.88 | $11.49 | +1.22% | 276,787,800 |
| Aug 1987 | $10.38 | $11.61 | $10.28 | $11.35 | +7.99% | 223,965,000 |
| Jul 1987 | $9.42 | $10.56 | $9.42 | $10.51 | +11.00% | 200,136,600 |
| Jun 1987 | $8.83 | $9.61 | $8.58 | $9.47 | +7.66% | 171,601,200 |
| May 1987 | $8.19 | $8.89 | $8.17 | $8.80 | +7.37% | 166,071,600 |
| Apr 1987 | $8.54 | $9.21 | $8.06 | $8.19 | -4.61% | 239,085,000 |
| Mar 1987 | $8.55 | $9.10 | $8.36 | $8.59 | +0.24% | 208,008,000 |
| Feb 1987 | $7.63 | $8.69 | $7.39 | $8.57 | +12.18% | 178,956,000 |
| Jan 1987 | $6.90 | $8.03 | $6.78 | $7.64 | +11.00% | 242,348,400 |
| Dec 1986 | $6.11 | $7.19 | $6.04 | $6.88 | +12.10% | 249,190,200 |
| Nov 1986 | $6.06 | $6.22 | $5.58 | $6.14 | +1.73% | 101,113,200 |
| Oct 1986 | $5.48 | $6.13 | $5.47 | $6.03 | +10.28% | 137,336,400 |
| Sep 1986 | $6.42 | $6.42 | $5.39 | $5.47 | -14.81% | 182,881,800 |
| Aug 1986 | $5.93 | $6.49 | $5.90 | $6.42 | +8.57% | 117,799,200 |
| Jul 1986 | $5.75 | $5.97 | $5.31 | $5.92 | +1.91% | 137,439,000 |
| Jun 1986 | $5.38 | $5.88 | $5.11 | $5.81 | +8.29% | 125,598,600 |
| May 1986 | $4.80 | $5.57 | $4.72 | $5.36 | +11.24% | 147,236,400 |
| Apr 1986 | $4.87 | $5.08 | $4.47 | $4.82 | -0.43% | 199,785,600 |
| Mar 1986 | $4.15 | $4.92 | $4.06 | $4.84 | +15.69% | 171,756,000 |
| Feb 1986 | $3.83 | $4.31 | $3.82 | $4.18 | +9.45% | 125,632,800 |
| Jan 1986 | $3.81 | $3.95 | $3.73 | $3.82 | +0.45% | 157,842,000 |
| Dec 1985 | $3.63 | $3.83 | $3.56 | $3.81 | +5.39% | 136,224,000 |
| Nov 1985 | $3.23 | $3.65 | $3.23 | $3.61 | +11.59% | 128,656,800 |
| Oct 1985 | $3.00 | $3.24 | $2.94 | $3.24 | +7.62% | 140,846,400 |
| Sep 1985 | $3.17 | $3.17 | $2.88 | $3.01 | -5.15% | 147,135,600 |
| Aug 1985 | $3.15 | $3.27 | $3.09 | $3.17 | +1.11% | 98,607,600 |
| Jul 1985 | $3.12 | $3.26 | $3.03 | $3.14 | +0.22% | 137,498,400 |
| Jun 1985 | $3.04 | $3.21 | $2.99 | $3.13 | +4.41% | 147,542,400 |
| May 1985 | $2.81 | $3.04 | $2.73 | $3.00 | +6.02% | 152,532,000 |
| Apr 1985 | $2.91 | $2.91 | $2.81 | $2.83 | -2.98% | 101,516,400 |
| Mar 1985 | $2.77 | $2.93 | $2.75 | $2.91 | +5.01% | 157,539,600 |
| Feb 1985 | $2.65 | $2.81 | $2.64 | $2.77 | +4.04% | 147,592,800 |
| Jan 1985 | $2.61 | $2.67 | $2.51 | $2.67 | +2.13% | 166,348,800 |
| Dec 1984 | $2.45 | $2.61 | $2.44 | $2.61 | +5.91% | 125,672,400 |
| Nov 1984 | $2.41 | $2.53 | $2.37 | $2.47 | +2.30% | 119,444,400 |
| Oct 1984 | $2.29 | $2.43 | $2.22 | $2.41 | +5.00% | 147,564,000 |
| Sep 1984 | $2.32 | $2.40 | $2.27 | $2.30 | -1.49% | 104,198,400 |
| Aug 1984 | $2.32 | $2.49 | $2.31 | $2.33 | +0.90% | 187,009,200 |
| Jul 1984 | $2.57 | $2.57 | $2.17 | $2.31 | -10.13% | 162,846,000 |
| Jun 1984 | $2.40 | $2.58 | $2.40 | $2.57 | +8.35% | 118,375,200 |
| May 1984 | $2.56 | $2.58 | $2.30 | $2.37 | -7.20% | 120,272,400 |
| Apr 1984 | $2.61 | $2.71 | $2.54 | $2.56 | -2.26% | 116,499,600 |
| Mar 1984 | $2.60 | $2.67 | $2.50 | $2.61 | 0.00% | 132,840,000 |
| Feb 1984 | $2.47 | $2.66 | $2.43 | $2.61 | +6.51% | 110,815,200 |
| Jan 1984 | $2.51 | $2.55 | $2.44 | $2.45 | -2.21% | 144,428,400 |
| Dec 1983 | $2.71 | $2.72 | $2.42 | $2.51 | -7.55% | 104,223,600 |
| Nov 1983 | $2.67 | $2.76 | $2.65 | $2.72 | +2.09% | 72,543,600 |
| Oct 1983 | $2.67 | $2.91 | $2.60 | $2.66 | -0.78% | 149,745,600 |
| Sep 1983 | $2.68 | $2.72 | $2.46 | $2.68 | +0.13% | 117,367,200 |
| Aug 1983 | $2.60 | $2.72 | $2.55 | $2.68 | +2.80% | 86,364,000 |
| Jul 1983 | $2.60 | $2.77 | $2.49 | $2.60 | +0.94% | 99,741,600 |
| Jun 1983 | $2.37 | $2.58 | $2.32 | $2.58 | +8.00% | 110,602,800 |
| May 1983 | $2.60 | $2.63 | $2.38 | $2.39 | -8.99% | 113,342,400 |
| Apr 1983 | $2.36 | $2.65 | $2.27 | $2.63 | +11.34% | 121,618,800 |
| Mar 1983 | $2.35 | $2.45 | $2.30 | $2.36 | +1.35% | 93,103,200 |
| Feb 1983 | $2.38 | $2.42 | $2.27 | $2.33 | -2.33% | 76,852,800 |
| Jan 1983 | $2.35 | $2.47 | $2.33 | $2.38 | +1.33% | 81,914,400 |
| Dec 1982 | $2.27 | $2.45 | $2.23 | $2.35 | +2.27% | 72,511,200 |
| Nov 1982 | $2.23 | $2.42 | $2.18 | $2.30 | +2.80% | 107,337,600 |
| Oct 1982 | $2.17 | $2.41 | $2.07 | $2.24 | +3.04% | 118,677,600 |
| Sep 1982 | $2.13 | $2.28 | $2.08 | $2.17 | +2.63% | 91,681,200 |
| Aug 1982 | $1.96 | $2.13 | $1.78 | $2.11 | +8.94% | 147,391,200 |
| Jul 1982 | $1.84 | $1.99 | $1.80 | $1.94 | +3.52% | 118,994,400 |
| Jun 1982 | $1.99 | $2.04 | $1.87 | $1.88 | -6.90% | 98,488,800 |
| May 1982 | $2.12 | $2.16 | $2.01 | $2.01 | -5.23% | 68,907,600 |
| Apr 1982 | $2.02 | $2.17 | $1.99 | $2.13 | +6.06% | 77,331,600 |
| Mar 1982 | $2.17 | $2.19 | $1.95 | $2.00 | -8.26% | 117,500,400 |
| Feb 1982 | $2.34 | $2.40 | $2.17 | $2.18 | -7.09% | 75,574,800 |
| Jan 1982 | $2.36 | $2.38 | $2.22 | $2.35 | -0.14% | 59,796,000 |
| Dec 1981 | $2.37 | $2.46 | $2.30 | $2.35 | -1.02% | 63,896,400 |
| Nov 1981 | $2.23 | $2.40 | $2.12 | $2.38 | +7.20% | 102,182,400 |
| Oct 1981 | $2.36 | $2.40 | $2.16 | $2.22 | -5.90% | 132,724,800 |
| Sep 1981 | $2.33 | $2.38 | $2.23 | $2.36 | +1.04% | 65,041,200 |
| Aug 1981 | $2.56 | $2.59 | $2.28 | $2.33 | -8.94% | 77,360,400 |
| Jul 1981 | $2.57 | $2.64 | $2.48 | $2.56 | -0.27% | 55,144,800 |
| Jun 1981 | $2.79 | $2.86 | $2.56 | $2.57 | -7.96% | 111,697,200 |
| May 1981 | $2.53 | $2.82 | $2.38 | $2.79 | +10.44% | 65,340,000 |
| Apr 1981 | $2.36 | $2.68 | $2.36 | $2.53 | +7.53% | 91,440,000 |
| Mar 1981 | $2.32 | $2.48 | $2.31 | $2.35 | +1.35% | 60,814,800 |
| Feb 1981 | $2.29 | $2.33 | $2.21 | $2.32 | +0.90% | 47,073,600 |
| Jan 1981 | $2.35 | $2.42 | $2.26 | $2.30 | -2.36% | 46,256,400 |
| Dec 1980 | $2.20 | $2.39 | $2.04 | $2.35 | +6.60% | 56,660,400 |
| Nov 1980 | $2.08 | $2.27 | $2.08 | $2.21 | +6.35% | 35,308,800 |
| Oct 1980 | $2.22 | $2.24 | $2.03 | $2.08 | -6.27% | 42,872,400 |
| Sep 1980 | $2.10 | $2.29 | $2.10 | $2.22 | +5.28% | 53,611,200 |
| Aug 1980 | $2.15 | $2.22 | $2.10 | $2.10 | -1.94% | 46,497,600 |
| Jul 1980 | $1.97 | $2.17 | $1.97 | $2.15 | +9.19% | 64,832,400 |
| Jun 1980 | $1.97 | $2.04 | $1.94 | $1.97 | -1.05% | 58,291,200 |
| May 1980 | $1.89 | $2.01 | $1.83 | $1.99 | +5.34% | 56,188,800 |
| Apr 1980 | $1.88 | $1.91 | $1.75 | $1.89 | +0.56% | 56,311,200 |
| Mar 1980 | $1.76 | $1.89 | $1.62 | $1.88 | +6.51% | 72,882,000 |
| Feb 1980 | $1.89 | $1.92 | $1.68 | $1.76 | -7.48% | 67,417,200 |
| Jan 1980 | $2.01 | $2.10 | $1.90 | $1.90 | -5.19% | 60,818,400 |
| Dec 1979 | $2.00 | $2.06 | $1.98 | $2.01 | -0.17% | 37,116,000 |
| Nov 1979 | $1.84 | $2.06 | $1.80 | $2.01 | +9.45% | 40,320,000 |
| Oct 1979 | $1.91 | $1.98 | $1.77 | $1.84 | -3.82% | 66,204,000 |
| Sep 1979 | $1.93 | $1.94 | $1.82 | $1.91 | -1.07% | 39,700,800 |
| Aug 1979 | $1.84 | $1.99 | $1.82 | $1.93 | +4.90% | 59,155,200 |
| Jul 1979 | $1.85 | $1.92 | $1.81 | $1.84 | -1.85% | 40,467,600 |
| Jun 1979 | $1.74 | $1.88 | $1.74 | $1.88 | +7.57% | 37,227,600 |
| May 1979 | $1.90 | $1.91 | $1.74 | $1.74 | -8.39% | 55,497,600 |
| Apr 1979 | $1.83 | $1.91 | $1.80 | $1.90 | +3.78% | 47,721,600 |
| Mar 1979 | $1.81 | $1.90 | $1.79 | $1.83 | +1.15% | 34,617,600 |
| Feb 1979 | $1.89 | $1.90 | $1.79 | $1.81 | -4.04% | 37,519,200 |
| Jan 1979 | $1.88 | $1.99 | $1.84 | $1.89 | +0.56% | 85,255,200 |
| Dec 1978 | $1.67 | $1.92 | $1.67 | $1.88 | +13.18% | 60,184,800 |
| Nov 1978 | $1.61 | $1.71 | $1.58 | $1.66 | +6.22% | 37,897,200 |
| Oct 1978 | $1.67 | $1.71 | $1.49 | $1.56 | -6.25% | 36,331,200 |
| Sep 1978 | $1.69 | $1.84 | $1.63 | $1.67 | -1.24% | 48,456,000 |
| Aug 1978 | $1.68 | $1.78 | $1.64 | $1.69 | +0.62% | 46,900,800 |
| Jul 1978 | $1.54 | $1.70 | $1.52 | $1.68 | +8.78% | 35,978,400 |
| Jun 1978 | $1.62 | $1.75 | $1.51 | $1.54 | -4.72% | 47,509,200 |
| May 1978 | $1.55 | $1.67 | $1.48 | $1.62 | +4.25% | 69,062,400 |
| Apr 1978 | $1.35 | $1.57 | $1.34 | $1.55 | +14.91% | 63,036,000 |
| Mar 1978 | $1.46 | $1.49 | $1.32 | $1.35 | -7.61% | 49,521,600 |
| Feb 1978 | $1.52 | $1.58 | $1.45 | $1.46 | -4.09% | 30,301,200 |
| Jan 1978 | $1.53 | $1.55 | $1.44 | $1.52 | -1.13% | 33,066,000 |
| Dec 1977 | $1.56 | $1.57 | $1.49 | $1.54 | -1.33% | 40,716,000 |
| Nov 1977 | $1.50 | $1.64 | $1.45 | $1.56 | +4.17% | 46,785,600 |
| Oct 1977 | $1.63 | $1.64 | $1.42 | $1.50 | -7.69% | 45,363,600 |
| Sep 1977 | $1.63 | $1.64 | $1.56 | $1.63 | -0.42% | 27,763,200 |
| Aug 1977 | $1.48 | $1.65 | $1.44 | $1.63 | +10.07% | 39,992,400 |
| Jul 1977 | $1.55 | $1.58 | $1.46 | $1.48 | -4.26% | 28,382,400 |
| Jun 1977 | $1.41 | $1.60 | $1.41 | $1.55 | +10.13% | 39,783,600 |
| May 1977 | $1.42 | $1.49 | $1.40 | $1.41 | -1.22% | 40,525,200 |
| Apr 1977 | $1.54 | $1.58 | $1.39 | $1.42 | -7.03% | 48,286,800 |
| Mar 1977 | $1.56 | $1.66 | $1.53 | $1.53 | -1.78% | 42,087,600 |
| Feb 1977 | $1.61 | $1.67 | $1.54 | $1.56 | -3.02% | 40,003,200 |
| Jan 1977 | $1.85 | $1.90 | $1.57 | $1.61 | -15.05% | 47,883,600 |
| Dec 1976 | $1.77 | $1.91 | $1.74 | $1.89 | +6.45% | 51,213,600 |
| Nov 1976 | $2.09 | $2.09 | $1.78 | $1.78 | -15.09% | 36,932,400 |
| Oct 1976 | $2.18 | $2.18 | $1.99 | $2.09 | -3.83% | 25,614,000 |
| Sep 1976 | $2.03 | $2.26 | $2.03 | $2.18 | +7.36% | 41,670,000 |
| Aug 1976 | $1.94 | $2.07 | $1.94 | $2.03 | +4.28% | 23,302,800 |
| Jul 1976 | $2.02 | $2.08 | $1.91 | $1.94 | -2.78% | 28,749,600 |
| Jun 1976 | $1.94 | $2.01 | $1.83 | $2.00 | +2.85% | 32,727,600 |
| May 1976 | $2.00 | $2.10 | $1.92 | $1.94 | -2.94% | 26,733,600 |
| Apr 1976 | $2.07 | $2.11 | $1.95 | $2.00 | -3.19% | 30,646,800 |
| Mar 1976 | $1.88 | $2.11 | $1.86 | $2.07 | +10.37% | 51,282,000 |
| Feb 1976 | $2.01 | $2.09 | $1.86 | $1.88 | -6.90% | 45,507,600 |
| Jan 1976 | $1.92 | $2.06 | $1.81 | $2.01 | +4.69% | 70,218,000 |
| Dec 1975 | $2.19 | $2.21 | $1.90 | $1.92 | -12.34% | 42,501,600 |
| Nov 1975 | $2.08 | $2.21 | $2.04 | $2.19 | +5.51% | 19,220,400 |
| Oct 1975 | $1.89 | $2.17 | $1.88 | $2.08 | +9.91% | 34,646,400 |
| Sep 1975 | $1.95 | $2.00 | $1.81 | $1.89 | -3.02% | 35,492,400 |
| Aug 1975 | $2.09 | $2.11 | $1.89 | $1.95 | -6.49% | 35,017,200 |
| Jul 1975 | $2.36 | $2.37 | $2.06 | $2.09 | -11.62% | 30,751,200 |
| Jun 1975 | $2.32 | $2.38 | $2.21 | $2.36 | +2.72% | 27,518,400 |
| May 1975 | $2.15 | $2.35 | $2.09 | $2.30 | +5.58% | 34,095,600 |
| Apr 1975 | $2.10 | $2.18 | $1.92 | $2.18 | +3.46% | 39,808,800 |
| Mar 1975 | $2.08 | $2.22 | $2.06 | $2.10 | +1.00% | 32,097,600 |
| Feb 1975 | $1.77 | $2.09 | $1.77 | $2.08 | +18.11% | 34,642,800 |
| Jan 1975 | $1.85 | $1.92 | $1.60 | $1.76 | -4.33% | 49,420,800 |
| Dec 1974 | $1.89 | $1.91 | $1.66 | $1.84 | -3.10% | 34,110,000 |
| Nov 1974 | $1.83 | $2.02 | $1.65 | $1.90 | +3.78% | 34,203,600 |
| Oct 1974 | $1.40 | $1.88 | $1.34 | $1.83 | +31.35% | 50,994,000 |
| Sep 1974 | $1.76 | $1.78 | $1.30 | $1.40 | -20.87% | 49,755,600 |
| Aug 1974 | $1.86 | $1.92 | $1.60 | $1.76 | -5.22% | 33,937,200 |
| Jul 1974 | $2.18 | $2.21 | $1.82 | $1.86 | -14.65% | 32,396,400 |
| Jun 1974 | $2.19 | $2.38 | $2.17 | $2.18 | -0.63% | 20,224,800 |
| May 1974 | $2.23 | $2.36 | $2.17 | $2.19 | -1.72% | 21,412,800 |
| Apr 1974 | $2.25 | $2.30 | $2.16 | $2.23 | -0.61% | 17,028,000 |
| Mar 1974 | $2.18 | $2.39 | $2.15 | $2.25 | +3.02% | 21,704,400 |
| Feb 1974 | $2.16 | $2.22 | $2.00 | $2.18 | +0.48% | 20,847,600 |
| Jan 1974 | $2.24 | $2.28 | $2.00 | $2.17 | -3.25% | 31,248,000 |
| Dec 1973 | $2.35 | $2.37 | $2.16 | $2.24 | -5.00% | 18,709,200 |
| Nov 1973 | $2.39 | $2.50 | $2.30 | $2.36 | -1.16% | 20,649,600 |
| Oct 1973 | $2.25 | $2.53 | $2.22 | $2.39 | +5.04% | 23,252,400 |
| Sep 1973 | $2.26 | $2.40 | $2.12 | $2.27 | +0.61% | 29,660,400 |
| Aug 1973 | $2.56 | $2.56 | $2.21 | $2.26 | -12.50% | 32,007,600 |
| Jul 1973 | $2.50 | $2.59 | $2.27 | $2.58 | +3.48% | 31,838,400 |
| Jun 1973 | $2.48 | $2.65 | $2.38 | $2.50 | +0.70% | 18,774,000 |
| May 1973 | $2.45 | $2.67 | $2.38 | $2.48 | +1.13% | 26,560,800 |
| Apr 1973 | $2.65 | $2.71 | $2.41 | $2.45 | -7.71% | 16,279,200 |
| Mar 1973 | $2.57 | $2.82 | $2.40 | $2.66 | +3.38% | 19,278,000 |
| Feb 1973 | $2.61 | $2.74 | $2.50 | $2.57 | -1.59% | 17,949,600 |
| Jan 1973 | $2.48 | $2.80 | $2.45 | $2.61 | +5.47% | 21,265,200 |
| Dec 1972 | $2.36 | $2.50 | $2.34 | $2.48 | +5.00% | 12,898,800 |
| Nov 1972 | $2.40 | $2.50 | $2.31 | $2.36 | -0.73% | 15,526,800 |
| Oct 1972 | $2.28 | $2.38 | $2.21 | $2.38 | +4.27% | 18,313,200 |
| Sep 1972 | $2.27 | $2.32 | $2.21 | $2.28 | +0.31% | 12,751,200 |
| Aug 1972 | $2.35 | $2.44 | $2.13 | $2.27 | -3.25% | 20,080,800 |
| Jul 1972 | $2.16 | $2.37 | $2.09 | $2.35 | +8.68% | 15,451,200 |
| Jun 1972 | $2.04 | $2.21 | $1.94 | $2.16 | +6.33% | 15,321,600 |
| May 1972 | $2.01 | $2.06 | $1.89 | $2.03 | +0.68% | 18,583,200 |
| Apr 1972 | $1.94 | $2.07 | $1.94 | $2.02 | +4.59% | 14,076,000 |
| Mar 1972 | $1.86 | $1.96 | $1.86 | $1.93 | +4.03% | 18,064,800 |
| Feb 1972 | $1.81 | $1.92 | $1.80 | $1.85 | +2.69% | 22,154,400 |
| Jan 1972 | $1.72 | $1.82 | $1.72 | $1.81 | +4.84% | 19,454,400 |
| Dec 1971 | $1.64 | $1.82 | $1.62 | $1.72 | +5.19% | 28,972,800 |
| Nov 1971 | $1.60 | $1.65 | $1.52 | $1.64 | +2.61% | 19,360,800 |
| Oct 1971 | $1.56 | $1.63 | $1.53 | $1.60 | +2.34% | 20,383,200 |
| Sep 1971 | $1.49 | $1.60 | $1.49 | $1.56 | +4.79% | 22,716,000 |
| Aug 1971 | $1.43 | $1.53 | $1.39 | $1.49 | +4.25% | 25,207,200 |
| Jul 1971 | $1.41 | $1.47 | $1.38 | $1.43 | +0.86% | 24,278,400 |
| Jun 1971 | $1.44 | $1.47 | $1.38 | $1.41 | -2.05% | 17,704,800 |
| May 1971 | $1.44 | $1.53 | $1.43 | $1.44 | +0.24% | 18,338,400 |
| Apr 1971 | $1.39 | $1.45 | $1.36 | $1.44 | +3.62% | 28,317,600 |
| Mar 1971 | $1.34 | $1.41 | $1.31 | $1.39 | +4.02% | 32,112,000 |
| Feb 1971 | $1.32 | $1.40 | $1.31 | $1.34 | +1.05% | 25,120,800 |
| Jan 1971 | $1.35 | $1.37 | $1.31 | $1.32 | -3.79% | 25,956,000 |
| Dec 1970 | $1.23 | $1.38 | $1.22 | $1.38 | +11.86% | 27,554,400 |
| Nov 1970 | $1.22 | $1.26 | $1.20 | $1.23 | +1.14% | 17,344,800 |
| Oct 1970 | $1.23 | $1.26 | $1.19 | $1.22 | -1.13% | 26,640,000 |
| Sep 1970 | $1.11 | $1.24 | $1.10 | $1.23 | +10.63% | 29,102,400 |
| Aug 1970 | $1.13 | $1.17 | $1.02 | $1.11 | -1.24% | 38,829,600 |
| Jul 1970 | $1.21 | $1.31 | $1.10 | $1.13 | -7.02% | 46,432,800 |
| Jun 1970 | $1.17 | $1.28 | $1.17 | $1.21 | +3.72% | 22,644,000 |
| May 1970 | $1.31 | $1.31 | $1.09 | $1.17 | -10.89% | 38,275,200 |
| Apr 1970 | $1.42 | $1.44 | $1.28 | $1.31 | -7.60% | 26,582,400 |
| Mar 1970 | $1.51 | $1.52 | $1.35 | $1.42 | -6.42% | 23,688,000 |
| Feb 1970 | $1.42 | $1.56 | $1.42 | $1.51 | +7.93% | 19,886,400 |
| Jan 1970 | $1.57 | $1.57 | $1.38 | $1.40 | -10.63% | 23,083,200 |
| Dec 1969 | $1.49 | $1.60 | $1.47 | $1.57 | +5.61% | 20,080,800 |
| Nov 1969 | $1.45 | $1.52 | $1.41 | $1.49 | +1.91% | 16,639,200 |
| Oct 1969 | $1.32 | $1.52 | $1.30 | $1.46 | +10.66% | 23,745,600 |
| Sep 1969 | $1.33 | $1.36 | $1.27 | $1.32 | -1.17% | 15,681,600 |
| Aug 1969 | $1.27 | $1.36 | $1.26 | $1.33 | +5.65% | 13,428,000 |
| Jul 1969 | $1.29 | $1.36 | $1.22 | $1.26 | -1.89% | 26,733,600 |
| Jun 1969 | $1.28 | $1.32 | $1.25 | $1.29 | -0.14% | 20,872,800 |
| May 1969 | $1.25 | $1.30 | $1.24 | $1.29 | +3.35% | 16,300,800 |
| Apr 1969 | $1.21 | $1.26 | $1.16 | $1.25 | +2.86% | 20,412,000 |
| Mar 1969 | $1.16 | $1.25 | $1.15 | $1.21 | +4.49% | 20,023,200 |
| Feb 1969 | $1.29 | $1.29 | $1.15 | $1.16 | -10.22% | 16,272,000 |
| Jan 1969 | $1.25 | $1.30 | $1.18 | $1.29 | +3.34% | 19,389,600 |
| Dec 1968 | $1.24 | $1.30 | $1.22 | $1.25 | -0.56% | 15,652,800 |
| Nov 1968 | $1.21 | $1.27 | $1.15 | $1.26 | +3.58% | 14,536,800 |
| Oct 1968 | $1.17 | $1.26 | $1.17 | $1.21 | +4.03% | 15,436,800 |
| Sep 1968 | $1.23 | $1.24 | $1.15 | $1.17 | -5.09% | 13,039,200 |
| Aug 1968 | $1.19 | $1.25 | $1.16 | $1.23 | +3.06% | 9,936,000 |
| Jul 1968 | $1.22 | $1.34 | $1.16 | $1.19 | -2.41% | 17,582,400 |
| Jun 1968 | $1.23 | $1.28 | $1.19 | $1.22 | -0.57% | 17,258,400 |
| May 1968 | $1.21 | $1.25 | $1.19 | $1.23 | +1.73% | 15,933,600 |
| Apr 1968 | $1.11 | $1.24 | $1.11 | $1.21 | +10.47% | 18,122,400 |
| Mar 1968 | $1.08 | $1.11 | $1.02 | $1.09 | +1.62% | 21,218,400 |
| Feb 1968 | $1.09 | $1.13 | $1.03 | $1.08 | -1.27% | 17,272,800 |
| Jan 1968 | $1.17 | $1.17 | $1.08 | $1.09 | -6.97% | 20,066,400 |
| Dec 1967 | $1.19 | $1.26 | $1.17 | $1.17 | -1.74% | 12,139,200 |
| Nov 1967 | $1.15 | $1.23 | $1.12 | $1.19 | +3.78% | 13,262,400 |
| Oct 1967 | $1.20 | $1.24 | $1.14 | $1.15 | -4.88% | 13,982,400 |
| Sep 1967 | $1.22 | $1.31 | $1.21 | $1.21 | -1.14% | 8,344,800 |
| Aug 1967 | $1.24 | $1.30 | $1.22 | $1.22 | -0.29% | 10,555,200 |
| Jul 1967 | $1.14 | $1.23 | $1.13 | $1.23 | +7.62% | 12,376,800 |
| Jun 1967 | $1.07 | $1.19 | $1.04 | $1.14 | +6.49% | 14,702,400 |
| May 1967 | $1.18 | $1.19 | $1.03 | $1.07 | -9.14% | 18,648,000 |
| Apr 1967 | $1.13 | $1.18 | $1.07 | $1.18 | +3.99% | 30,002,400 |
| Mar 1967 | $1.09 | $1.16 | $1.07 | $1.13 | +3.48% | 20,937,600 |
| Feb 1967 | $1.06 | $1.11 | $1.03 | $1.09 | +3.29% | 17,193,600 |
| Jan 1967 | $1.07 | $1.08 | $1.03 | $1.06 | -0.65% | 20,059,200 |
| Dec 1966 | $1.10 | $1.14 | $1.05 | $1.07 | -2.86% | 13,500,000 |
| Nov 1966 | $1.02 | $1.11 | $1.02 | $1.10 | +7.49% | 14,493,600 |
| Oct 1966 | $0.9948 | $1.04 | $0.9045 | $1.02 | +2.61% | 18,172,800 |
| Sep 1966 | $0.9583 | $1.02 | $0.8976 | $0.9948 | +3.80% | 13,975,200 |
| Aug 1966 | $1.04 | $1.05 | $0.9253 | $0.9583 | -7.54% | 13,132,800 |
| Jul 1966 | $1.07 | $1.10 | $1.03 | $1.04 | -3.55% | 8,157,600 |
| Jun 1966 | $1.02 | $1.09 | $1.01 | $1.07 | +4.74% | 10,936,800 |
| May 1966 | $1.05 | $1.05 | $0.9653 | $1.03 | -1.83% | 15,192,000 |
| Apr 1966 | $1.07 | $1.11 | $1.03 | $1.05 | -2.59% | 14,428,800 |
| Mar 1966 | $1.01 | $1.07 | $0.9653 | $1.07 | +5.46% | 16,862,400 |
| Feb 1966 | $0.9809 | $1.08 | $0.9323 | $1.02 | +3.72% | 15,249,600 |
| Jan 1966 | $0.9792 | $1.05 | $0.9757 | $0.9809 | +0.18% | 14,587,200 |
| Dec 1965 | $0.9444 | $1.04 | $0.9063 | $0.9792 | +3.68% | 11,642,400 |
| Nov 1965 | $0.9653 | $0.9931 | $0.9045 | $0.9444 | -2.33% | 14,472,000 |
| Oct 1965 | $0.8507 | $0.967 | $0.8403 | $0.967 | +13.67% | 15,019,200 |
| Sep 1965 | $0.8524 | $0.941 | $0.8368 | $0.8507 | -0.20% | 17,661,600 |
| Aug 1965 | $0.783 | $0.8524 | $0.7622 | $0.8524 | +8.87% | 13,672,800 |
| Jul 1965 | $0.7604 | $0.8316 | $0.7604 | $0.783 | +3.68% | 10,735,200 |
| Jun 1965 | $0.7604 | $0.7899 | $0.717 | $0.7552 | -0.68% | 17,035,200 |
| May 1965 | $0.7882 | $0.8108 | $0.7535 | $0.7604 | -3.52% | 9,424,800 |
| Apr 1965 | $0.7205 | $0.8299 | $0.717 | $0.7882 | +9.40% | 12,182,400 |
| Mar 1965 | $0.717 | $0.7639 | $0.6979 | $0.7205 | +0.48% | 11,865,600 |
| Feb 1965 | $0.7257 | $0.7361 | $0.6944 | $0.717 | -0.24% | 12,434,400 |
| Jan 1965 | $0.6892 | $0.776 | $0.6736 | $0.7188 | +4.28% | 17,949,600 |
| Dec 1964 | $0.6528 | $0.7135 | $0.6215 | $0.6892 | +5.59% | 15,040,800 |
| Nov 1964 | $0.6389 | $0.7014 | $0.6389 | $0.6528 | +4.44% | 11,440,800 |
| Oct 1964 | $0.6007 | $0.651 | $0.6007 | $0.625 | +4.35% | 9,784,800 |
| Sep 1964 | $0.5625 | $0.625 | $0.5521 | $0.599 | +6.48% | 13,118,400 |
| Aug 1964 | $0.5729 | $0.6181 | $0.5417 | $0.5625 | -2.11% | 9,964,800 |
| Jul 1964 | $0.5174 | $0.5816 | $0.5174 | $0.5747 | +11.07% | 14,486,400 |
| Jun 1964 | $0.4878 | $0.526 | $0.4774 | $0.5174 | +6.05% | 16,236,000 |
| May 1964 | $0.5214 | $0.537 | $0.4844 | $0.4878 | -6.44% | 13,161,600 |
| Apr 1964 | $0.5394 | $0.5451 | $0.5185 | $0.5214 | -3.33% | 13,003,200 |
| Mar 1964 | $0.5463 | $0.5619 | $0.537 | $0.5394 | -1.27% | 12,052,800 |
| Feb 1964 | $0.5278 | $0.5584 | $0.5278 | $0.5463 | +3.74% | 14,968,800 |
| Jan 1964 | $0.5093 | $0.5324 | $0.5046 | $0.5266 | +3.88% | 13,413,600 |
| Dec 1963 | $0.4769 | $0.5093 | $0.4769 | $0.5069 | +6.44% | 10,713,600 |
| Nov 1963 | $0.4884 | $0.4954 | $0.4659 | $0.4763 | -2.49% | 12,895,200 |
| Oct 1963 | $0.456 | $0.5075 | $0.4498 | $0.4884 | +7.93% | 20,196,000 |
| Sep 1963 | $0.4919 | $0.4931 | $0.4514 | $0.4525 | -9.39% | 14,169,600 |
| Aug 1963 | $0.4416 | $0.4994 | $0.412 | $0.4994 | +13.11% | 16,567,200 |
| Jul 1963 | $0.4172 | $0.4433 | $0.4132 | $0.4416 | +5.83% | 16,005,600 |
| Jun 1963 | $0.4161 | $0.4392 | $0.4051 | $0.4172 | +0.28% | 16,891,200 |
| May 1963 | $0.4144 | $0.4167 | $0.3935 | $0.4161 | +0.14% | 16,005,600 |
| Apr 1963 | $0.3848 | $0.419 | $0.3825 | $0.4155 | +7.97% | 19,569,600 |
| Mar 1963 | $0.3727 | $0.3877 | $0.3698 | $0.3848 | +3.26% | 16,135,200 |
| Feb 1963 | $0.3981 | $0.4039 | $0.3657 | $0.3727 | -6.40% | 16,675,200 |
| Jan 1963 | $0.3594 | $0.4068 | $0.3588 | $0.3981 | +10.79% | 19,958,400 |
| Dec 1962 | $0.3623 | $0.3843 | $0.3588 | $0.3594 | -0.80% | 14,407,200 |
| Nov 1962 | $0.3194 | $0.3681 | $0.3148 | $0.3623 | +13.41% | 18,727,200 |
| Oct 1962 | $0.3003 | $0.3229 | $0.294 | $0.3194 | +5.95% | 24,192,000 |
| Sep 1962 | $0.2928 | $0.3218 | $0.2922 | $0.3015 | +2.96% | 19,418,400 |
| Aug 1962 | $0.3455 | $0.349 | $0.2894 | $0.2928 | -15.24% | 24,170,400 |
| Jul 1962 | $0.3009 | $0.3553 | $0.2998 | $0.3455 | +14.81% | 23,328,000 |
| Jun 1962 | $0.342 | $0.342 | $0.2778 | $0.3009 | -12.01% | 38,836,800 |
| May 1962 | $0.3889 | $0.4097 | $0.3264 | $0.342 | -12.44% | 26,978,400 |
| Apr 1962 | $0.4363 | $0.4363 | $0.3895 | $0.3906 | -10.48% | 11,815,200 |
| Mar 1962 | $0.4132 | $0.4392 | $0.4063 | $0.4363 | +5.60% | 22,528,800 |
| Feb 1962 | $0.3843 | $0.4178 | $0.3831 | $0.4132 | +7.53% | 16,848,000 |
| Jan 1962 | $0.412 | $0.4161 | $0.3692 | $0.3843 | – | 22,507,200 |
Seasonality
MRK return in each calendar month over the last 10 years, including dividends. The current month runs to the latest close.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average | 1.4% | -0.5% | 1.9% | 0.1% | 0.5% | 3.1% | -0.8% | 3.7% | -0.7% | 1.1% | 3.4% | 2.1% |
| Months up | 5 of 10 | 4 of 10 | 7 of 10 | 4 of 10 | 7 of 10 | 6 of 10 | 3 of 10 | 7 of 10 | 4 of 10 | 6 of 10 | 6 of 9 | 7 of 9 |
| 2026 | 4.8% | 12.3% | -2.1% | -9.2% | 8.7% | 9.0% | 1.3% | 13.5% | -1.1% | 0.7% | ||
| 2025 | -0.7% | -6.6% | -1.9% | -5.1% | -9.8% | 4.1% | -1.3% | 7.7% | 0.8% | 2.4% | 21.9% | 1.3% |
| 2024 | 10.8% | 5.3% | 4.4% | -2.1% | -2.8% | -0.8% | -8.6% | 4.7% | -3.5% | -9.9% | -0.7% | -1.3% |
| 2023 | -3.2% | -1.1% | 0.8% | 8.5% | -4.4% | 5.2% | -7.6% | 2.2% | -4.9% | -0.2% | -0.2% | 7.2% |
| 2022 | 6.3% | -6.0% | 8.1% | 8.1% | 3.8% | -0.1% | -2.0% | -4.5% | 1.7% | 17.5% | 8.8% | 1.4% |
| 2021 | -5.8% | -5.8% | 7.1% | -3.4% | 1.9% | 8.3% | -1.2% | -0.8% | -0.7% | 17.2% | -14.9% | 3.3% |
| 2020 | -6.1% | -10.4% | 1.3% | 3.1% | 1.7% | -3.4% | 3.8% | 6.3% | -2.0% | -9.3% | 6.9% | 2.6% |
| 2019 | -2.6% | 9.2% | 3.0% | -5.4% | 0.6% | 6.6% | -1.0% | 4.2% | -2.0% | 2.9% | 0.6% | 5.0% |
| 2018 | 5.3% | -8.5% | 1.3% | 8.1% | 1.1% | 2.8% | 8.5% | 4.1% | 4.1% | 3.8% | 7.8% | -3.0% |
| 2017 | 5.3% | 6.3% | -2.8% | -1.9% | 4.5% | -0.8% | -0.3% | -0.0% | 1.0% | -14.0% | 0.3% | 2.7% |