GLAUKOS Corp (GKOS) stock
GKOSNYSESurgical & Medical Instruments & ApparatusFiscal year ends December 31
Financials through Q2 FY2026, quarter ended Jun 30, 2026Last filing: 10-Q on Oct 28, 2026Score 7/30239% above fair value
$237.60−4.88 (-2.01%)
Close on Oct 30, 2026Market cap $14.01BP/E –Yield –
Price history
Glaukos share prices for every month, newest first. Adjusted for stock splits, not for dividends.
Close, Oct 30, 2026
$237.60
-2.01% on the day
52-week range
$80.91 – $248.75
-4.5% from the high
Change over 52 weeks
+170.6%
From $87.80 on Oct 30, 2025
Average volume
947,464
Shares a day, last 90 sessions
| Month | Open | High | Low | Close | Change | Volume |
|---|---|---|---|---|---|---|
| Oct 2026 | $164.00 | $248.75 | $146.39 | $237.60 | +44.71% | 29,161,021 |
| Sep 2026 | $179.97 | $185.35 | $151.01 | $164.19 | -8.56% | 17,683,481 |
| Aug 2026 | $168.66 | $191.62 | $167.64 | $179.56 | +7.70% | 13,904,532 |
| Jul 2026 | $139.06 | $184.00 | $136.18 | $166.72 | +19.29% | 19,415,178 |
| Jun 2026 | $103.51 | $145.39 | $99.48 | $139.76 | +35.23% | 23,120,049 |
| May 2026 | $143.54 | $148.11 | $101.47 | $103.35 | -28.06% | 22,252,189 |
| Apr 2026 | $108.69 | $145.50 | $107.68 | $143.67 | +33.45% | 15,458,441 |
| Mar 2026 | $119.04 | $121.27 | $95.87 | $107.66 | -10.58% | 15,894,135 |
| Feb 2026 | $119.64 | $123.16 | $103.55 | $120.40 | +0.85% | 14,843,644 |
| Jan 2026 | $114.47 | $130.23 | $93.96 | $119.38 | +5.73% | 17,959,842 |
| Dec 2025 | $105.29 | $118.17 | $104.11 | $112.91 | +6.23% | 14,690,872 |
| Nov 2025 | $88.09 | $107.18 | $80.91 | $106.29 | +20.69% | 21,772,928 |
| Oct 2025 | $82.86 | $102.80 | $73.16 | $88.07 | +8.00% | 32,662,717 |
| Sep 2025 | $94.48 | $95.57 | $79.02 | $81.55 | -14.89% | 17,753,835 |
| Aug 2025 | $84.41 | $97.00 | $82.88 | $95.82 | +11.30% | 17,413,016 |
| Jul 2025 | $102.28 | $106.82 | $83.47 | $86.09 | -16.65% | 23,765,457 |
| Jun 2025 | $94.02 | $104.58 | $90.90 | $103.29 | +9.55% | 18,629,176 |
| May 2025 | $84.42 | $101.57 | $77.10 | $94.29 | +0.04% | 23,679,440 |
| Apr 2025 | $98.06 | $100.57 | $77.91 | $94.25 | -4.24% | 22,221,400 |
| Mar 2025 | $120.00 | $120.22 | $91.78 | $98.42 | -18.00% | 21,591,445 |
| Feb 2025 | $154.62 | $161.78 | $116.21 | $120.02 | -23.28% | 17,748,504 |
| Jan 2025 | $150.91 | $163.71 | $142.71 | $156.44 | +4.34% | 10,848,070 |
| Dec 2024 | $140.00 | $153.50 | $133.30 | $149.94 | +4.38% | 13,120,250 |
| Nov 2024 | $133.01 | $146.86 | $124.60 | $143.65 | +8.62% | 11,566,364 |
| Oct 2024 | $129.85 | $139.51 | $124.91 | $132.25 | +1.51% | 10,182,766 |
| Sep 2024 | $135.63 | $136.61 | $119.54 | $130.28 | -2.70% | 11,469,841 |
| Aug 2024 | $111.04 | $136.36 | $107.22 | $133.89 | +14.27% | 11,729,394 |
| Jul 2024 | $118.24 | $126.96 | $112.88 | $117.17 | -1.00% | 12,663,522 |
| Jun 2024 | $113.00 | $119.89 | $108.44 | $118.35 | +4.99% | 10,203,405 |
| May 2024 | $96.28 | $115.10 | $95.39 | $112.72 | +17.42% | 9,693,392 |
| Apr 2024 | $94.55 | $103.66 | $88.16 | $96.00 | +1.81% | 10,997,960 |
| Mar 2024 | $88.59 | $94.36 | $83.90 | $94.29 | +6.43% | 9,972,955 |
| Feb 2024 | $89.36 | $97.24 | $88.30 | $88.59 | -0.49% | 10,117,761 |
| Jan 2024 | $79.03 | $94.24 | $74.75 | $89.03 | +12.00% | 23,109,535 |
| Dec 2023 | $63.86 | $86.53 | $59.58 | $79.49 | +24.42% | 17,809,163 |
| Nov 2023 | $68.20 | $69.50 | $59.22 | $63.89 | -6.32% | 13,715,976 |
| Oct 2023 | $74.80 | $74.80 | $64.42 | $68.20 | -9.37% | 10,757,012 |
| Sep 2023 | $75.36 | $79.69 | $71.61 | $75.25 | +0.15% | 9,128,691 |
| Aug 2023 | $76.40 | $77.27 | $71.43 | $75.14 | -2.59% | 8,636,802 |
| Jul 2023 | $70.70 | $80.28 | $68.25 | $77.14 | +8.33% | 10,448,112 |
| Jun 2023 | $56.96 | $71.86 | $56.53 | $71.21 | +24.89% | 12,966,668 |
| May 2023 | $47.46 | $61.01 | $45.38 | $57.02 | +20.02% | 10,192,750 |
| Apr 2023 | $50.13 | $50.49 | $46.17 | $47.51 | -5.17% | 4,875,028 |
| Mar 2023 | $47.21 | $51.11 | $44.26 | $50.10 | +6.08% | 10,292,861 |
| Feb 2023 | $49.09 | $53.32 | $46.03 | $47.23 | -3.71% | 8,277,078 |
| Jan 2023 | $44.31 | $50.23 | $42.48 | $49.05 | +12.29% | 7,343,879 |
| Dec 2022 | $46.99 | $49.22 | $40.45 | $43.68 | -6.21% | 7,956,608 |
| Nov 2022 | $56.67 | $56.91 | $44.72 | $46.57 | -16.94% | 8,902,099 |
| Oct 2022 | $53.90 | $58.25 | $50.18 | $56.07 | +5.32% | 6,540,906 |
| Sep 2022 | $48.21 | $60.92 | $46.90 | $53.24 | +9.66% | 16,365,557 |
| Aug 2022 | $53.48 | $55.10 | $47.76 | $48.55 | -9.84% | 11,982,265 |
| Jul 2022 | $45.28 | $54.08 | $45.11 | $53.85 | +18.56% | 8,250,554 |
| Jun 2022 | $41.34 | $48.92 | $39.51 | $45.42 | +11.24% | 8,358,179 |
| May 2022 | $47.61 | $49.02 | $33.33 | $40.83 | -13.66% | 11,922,513 |
| Apr 2022 | $58.00 | $64.49 | $45.68 | $47.29 | -18.21% | 11,375,239 |
| Mar 2022 | $54.95 | $59.68 | $47.92 | $57.82 | +4.54% | 7,068,633 |
| Feb 2022 | $53.25 | $57.53 | $47.15 | $55.31 | +3.89% | 8,252,475 |
| Jan 2022 | $44.94 | $55.87 | $43.10 | $53.24 | +19.80% | 11,426,671 |
| Dec 2021 | $44.00 | $47.42 | $39.35 | $44.44 | +3.28% | 10,276,064 |
| Nov 2021 | $46.03 | $58.29 | $41.93 | $43.03 | -5.86% | 14,421,120 |
| Oct 2021 | $48.44 | $49.09 | $42.69 | $45.71 | -5.11% | 11,770,362 |
| Sep 2021 | $60.00 | $60.08 | $48.00 | $48.17 | -19.22% | 13,089,224 |
| Aug 2021 | $51.19 | $59.96 | $46.38 | $59.63 | +16.92% | 10,983,042 |
| Jul 2021 | $85.07 | $86.35 | $46.32 | $51.00 | -39.88% | 19,997,089 |
| Jun 2021 | $73.93 | $87.24 | $71.47 | $84.83 | +15.29% | 6,317,357 |
| May 2021 | $94.24 | $95.25 | $72.17 | $73.58 | -21.86% | 8,102,803 |
| Apr 2021 | $84.92 | $98.29 | $78.87 | $94.16 | +12.19% | 8,297,684 |
| Mar 2021 | $93.99 | $99.00 | $79.68 | $83.93 | -11.24% | 8,678,761 |
| Feb 2021 | $89.63 | $98.24 | $86.25 | $94.56 | +6.62% | 7,295,662 |
| Jan 2021 | $75.71 | $92.19 | $69.89 | $88.69 | +17.84% | 9,937,368 |
| Dec 2020 | $68.12 | $76.20 | $66.38 | $75.26 | +11.53% | 8,515,317 |
| Nov 2020 | $56.31 | $68.95 | $53.24 | $67.48 | +20.67% | 10,911,153 |
| Oct 2020 | $50.22 | $59.77 | $48.68 | $55.92 | +12.92% | 11,242,274 |
| Sep 2020 | $47.45 | $52.03 | $43.66 | $49.52 | +3.53% | 13,889,194 |
| Aug 2020 | $44.26 | $50.67 | $40.08 | $47.83 | +9.45% | 10,490,493 |
| Jul 2020 | $38.52 | $43.81 | $35.65 | $43.70 | +13.74% | 12,900,264 |
| Jun 2020 | $38.97 | $47.82 | $36.34 | $38.42 | -1.44% | 16,623,588 |
| May 2020 | $35.93 | $44.28 | $34.10 | $38.98 | +6.24% | 15,384,169 |
| Apr 2020 | $29.53 | $39.04 | $27.58 | $36.69 | +18.89% | 13,191,912 |
| Mar 2020 | $44.15 | $46.05 | $23.31 | $30.86 | -29.83% | 34,254,166 |
| Feb 2020 | $56.69 | $70.96 | $40.00 | $43.98 | -21.81% | 15,108,286 |
| Jan 2020 | $55.00 | $60.84 | $53.19 | $56.25 | +3.27% | 7,696,800 |
| Dec 2019 | $64.25 | $64.36 | $53.53 | $54.47 | -15.06% | 7,516,786 |
| Nov 2019 | $64.07 | $66.70 | $56.17 | $64.13 | +0.47% | 10,831,429 |
| Oct 2019 | $62.35 | $66.30 | $56.61 | $63.83 | +2.11% | 8,281,598 |
| Sep 2019 | $63.74 | $76.06 | $59.00 | $62.51 | -2.80% | 10,058,103 |
| Aug 2019 | $81.71 | $84.65 | $57.53 | $64.31 | -21.27% | 15,262,094 |
| Jul 2019 | $76.28 | $83.35 | $74.03 | $81.68 | +8.33% | 7,237,750 |
| Jun 2019 | $64.38 | $79.13 | $63.00 | $75.40 | +16.94% | 7,418,930 |
| May 2019 | $72.31 | $76.20 | $63.46 | $64.48 | -10.61% | 9,683,728 |
| Apr 2019 | $79.21 | $80.32 | $67.41 | $72.13 | -7.96% | 6,915,290 |
| Mar 2019 | $74.24 | $83.14 | $63.12 | $78.37 | +5.66% | 9,764,374 |
| Feb 2019 | $63.84 | $75.51 | $62.59 | $74.17 | +16.27% | 6,863,625 |
| Jan 2019 | $55.03 | $65.01 | $50.60 | $63.79 | +13.57% | 7,739,371 |
| Dec 2018 | $67.03 | $69.18 | $51.50 | $56.17 | -14.74% | 11,051,870 |
| Nov 2018 | $58.28 | $66.00 | $53.13 | $65.88 | +13.70% | 9,775,482 |
| Oct 2018 | $65.15 | $65.56 | $54.31 | $57.94 | -10.72% | 9,576,372 |
| Sep 2018 | $68.20 | $70.48 | $58.11 | $64.90 | -5.08% | 12,622,477 |
| Aug 2018 | $41.47 | $70.91 | $36.89 | $68.37 | +64.31% | 23,473,044 |
| Jul 2018 | $40.59 | $43.60 | $39.14 | $41.61 | +2.39% | 6,422,769 |
| Jun 2018 | $38.05 | $45.00 | $37.03 | $40.64 | +7.60% | 9,935,414 |
| May 2018 | $33.79 | $38.19 | $31.09 | $37.77 | +12.14% | 10,508,575 |
| Apr 2018 | $30.83 | $34.23 | $26.75 | $33.68 | +9.24% | 11,669,994 |
| Mar 2018 | $31.31 | $34.88 | $29.06 | $30.83 | -1.50% | 16,220,324 |
| Feb 2018 | $29.88 | $34.48 | $27.99 | $31.30 | +4.30% | 7,791,481 |
| Jan 2018 | $25.90 | $31.37 | $25.25 | $30.01 | +17.00% | 11,217,106 |
| Dec 2017 | $26.58 | $27.73 | $23.08 | $25.65 | -4.18% | 11,066,689 |
| Nov 2017 | $35.40 | $36.20 | $23.44 | $26.77 | -24.19% | 20,599,645 |
| Oct 2017 | $33.00 | $35.86 | $32.01 | $35.31 | +7.00% | 8,877,042 |
| Sep 2017 | $37.81 | $43.21 | $30.22 | $33.00 | -12.58% | 24,472,205 |
| Aug 2017 | $40.57 | $40.68 | $33.80 | $37.75 | -6.05% | 12,787,506 |
| Jul 2017 | $41.53 | $43.49 | $37.98 | $40.18 | -3.11% | 7,693,398 |
| Jun 2017 | $40.52 | $44.76 | $37.26 | $41.47 | +1.87% | 12,904,557 |
| May 2017 | $47.53 | $48.89 | $36.51 | $40.71 | -14.35% | 17,408,856 |
| Apr 2017 | $51.32 | $52.48 | $42.23 | $47.53 | -7.35% | 10,296,899 |
| Mar 2017 | $45.93 | $52.49 | $42.13 | $51.30 | +12.75% | 14,550,204 |
| Feb 2017 | $41.35 | $47.50 | $40.82 | $45.50 | +10.38% | 7,665,461 |
| Jan 2017 | $34.82 | $41.42 | $33.18 | $41.22 | +20.17% | 10,871,491 |
| Dec 2016 | $31.21 | $36.00 | $30.25 | $34.30 | +9.90% | 9,512,808 |
| Nov 2016 | $33.47 | $35.53 | $28.72 | $31.21 | -6.56% | 10,201,105 |
| Oct 2016 | $37.90 | $39.02 | $31.67 | $33.40 | -11.50% | 8,734,715 |
| Sep 2016 | $29.90 | $39.82 | $29.68 | $37.74 | +26.47% | 13,102,600 |
| Aug 2016 | $34.43 | $36.50 | $28.26 | $29.84 | -14.65% | 13,633,700 |
| Jul 2016 | $29.07 | $35.37 | $28.64 | $34.96 | +19.89% | 6,472,500 |
| Jun 2016 | $24.00 | $30.01 | $23.47 | $29.16 | +19.75% | 9,051,800 |
| May 2016 | $19.37 | $25.33 | $19.29 | $24.35 | +29.25% | 8,513,100 |
| Apr 2016 | $16.74 | $19.36 | $16.26 | $18.84 | +11.74% | 3,847,800 |
| Mar 2016 | $16.60 | $17.47 | $15.00 | $16.86 | +2.43% | 4,495,900 |
| Feb 2016 | $16.10 | $17.38 | $14.25 | $16.46 | +0.86% | 4,730,600 |
| Jan 2016 | $24.16 | $25.97 | $14.33 | $16.32 | -33.90% | 4,104,100 |
| Dec 2015 | $25.88 | $26.36 | $21.82 | $24.69 | -4.67% | 2,011,900 |
| Nov 2015 | $20.11 | $27.64 | $18.53 | $25.90 | +29.24% | 3,691,200 |
| Oct 2015 | $24.13 | $24.28 | $19.71 | $20.04 | -17.16% | 3,729,600 |
| Sep 2015 | $29.22 | $33.74 | $21.59 | $24.19 | -17.64% | 5,638,400 |
| Aug 2015 | $32.18 | $33.92 | $27.61 | $29.37 | -7.61% | 3,019,500 |
| Jul 2015 | $28.83 | $33.44 | $27.04 | $31.79 | +9.70% | 5,110,300 |
| Jun 2015 | $29.11 | $31.95 | $27.39 | $28.98 | – | 9,282,000 |
Seasonality
GKOS 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 | 12.6% | -0.7% | -3.6% | 3.3% | -3.3% | 12.6% | 1.0% | 8.4% | -5.2% | 5.6% | 1.2% | 1.1% |
| Months up | 10 of 10 | 6 of 10 | 5 of 10 | 5 of 10 | 5 of 10 | 9 of 10 | 6 of 10 | 6 of 10 | 3 of 10 | 7 of 10 | 5 of 9 | 5 of 9 |
| 2026 | 5.7% | 0.9% | -10.6% | 33.4% | -28.1% | 35.2% | 19.3% | 7.7% | -8.6% | 44.7% | ||
| 2025 | 4.3% | -23.3% | -18.0% | -4.2% | 0.0% | 9.5% | -16.7% | 11.3% | -14.9% | 8.0% | 20.7% | 6.2% |
| 2024 | 12.0% | -0.5% | 6.4% | 1.8% | 17.4% | 5.0% | -1.0% | 14.3% | -2.7% | 1.5% | 8.6% | 4.4% |
| 2023 | 12.3% | -3.7% | 6.1% | -5.2% | 20.0% | 24.9% | 8.3% | -2.6% | 0.1% | -9.4% | -6.3% | 24.4% |
| 2022 | 19.8% | 3.9% | 4.5% | -18.2% | -13.7% | 11.2% | 18.6% | -9.8% | 9.7% | 5.3% | -16.9% | -6.2% |
| 2021 | 17.8% | 6.6% | -11.2% | 12.2% | -21.9% | 15.3% | -39.9% | 16.9% | -19.2% | -5.1% | -5.9% | 3.3% |
| 2020 | 3.3% | -21.8% | -29.8% | 18.9% | 6.2% | -1.4% | 13.7% | 9.5% | 3.5% | 12.9% | 20.7% | 11.5% |
| 2019 | 13.6% | 16.3% | 5.7% | -8.0% | -10.6% | 16.9% | 8.3% | -21.3% | -2.8% | 2.1% | 0.5% | -15.1% |
| 2018 | 17.0% | 4.3% | -1.5% | 9.2% | 12.1% | 7.6% | 2.4% | 64.3% | -5.1% | -10.7% | 13.7% | -14.7% |
| 2017 | 20.2% | 10.4% | 12.7% | -7.3% | -14.3% | 1.9% | -3.1% | -6.0% | -12.6% | 7.0% | -24.2% | -4.2% |