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 trading day, 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
| Date | Open | High | Low | Close | Change | Volume |
|---|---|---|---|---|---|---|
| Oct 30, 2026 | $242.42 | $248.75 | $236.68 | $237.60 | -2.01% | 2,073,931 |
| Oct 29, 2026 | $211.00 | $243.71 | $207.41 | $242.48 | +33.65% | 5,416,241 |
| Oct 28, 2026 | $181.94 | $187.94 | $174.75 | $181.43 | +0.14% | 1,884,260 |
| Oct 27, 2026 | $178.49 | $185.86 | $176.68 | $181.17 | +1.63% | 1,689,592 |
| Oct 26, 2026 | $177.35 | $181.65 | $176.43 | $178.27 | -0.34% | 1,067,474 |
| Oct 23, 2026 | $175.95 | $179.70 | $173.08 | $178.88 | +1.24% | 961,189 |
| Oct 22, 2026 | $176.72 | $178.22 | $174.21 | $176.69 | -0.09% | 885,765 |
| Oct 21, 2026 | $173.50 | $178.19 | $172.93 | $176.85 | +1.97% | 930,333 |
| Oct 20, 2026 | $168.00 | $176.07 | $168.00 | $173.43 | +3.88% | 613,796 |
| Oct 19, 2026 | $164.71 | $168.59 | $164.09 | $166.96 | +1.29% | 775,393 |
| Oct 16, 2026 | $166.08 | $167.28 | $163.13 | $164.84 | -0.46% | 1,032,231 |
| Oct 15, 2026 | $168.26 | $170.20 | $165.36 | $165.60 | -1.36% | 778,596 |
| Oct 14, 2026 | $164.94 | $168.36 | $164.89 | $167.89 | +1.44% | 624,166 |
| Oct 13, 2026 | $169.53 | $171.22 | $164.95 | $165.50 | -1.50% | 909,898 |
| Oct 12, 2026 | $166.79 | $171.42 | $162.97 | $168.02 | +1.41% | 881,892 |
| Oct 9, 2026 | $160.06 | $166.97 | $159.89 | $165.69 | +2.73% | 1,196,008 |
| Oct 8, 2026 | $170.67 | $170.86 | $146.39 | $161.29 | -6.32% | 2,899,156 |
| Oct 7, 2026 | $161.00 | $174.48 | $159.59 | $172.18 | +6.55% | 1,487,661 |
| Oct 6, 2026 | $163.84 | $164.00 | $160.30 | $161.59 | -1.48% | 664,412 |
| Oct 5, 2026 | $164.44 | $165.99 | $163.17 | $164.01 | +0.16% | 837,810 |
| Oct 2, 2026 | $167.57 | $168.08 | $163.01 | $163.75 | +0.36% | 742,806 |
| Oct 1, 2026 | $164.00 | $168.73 | $162.08 | $163.17 | -0.62% | 808,411 |
| Sep 30, 2026 | $158.31 | $165.65 | $157.29 | $164.19 | +3.56% | 947,091 |
| Sep 29, 2026 | $153.56 | $159.06 | $152.39 | $158.55 | -0.01% | 638,201 |
| Sep 28, 2026 | $153.11 | $160.98 | $151.71 | $158.56 | +2.67% | 1,400,531 |
| Sep 25, 2026 | $154.50 | $155.60 | $151.01 | $154.43 | -0.29% | 826,237 |
| Sep 24, 2026 | $153.70 | $156.65 | $152.75 | $154.88 | +0.91% | 838,399 |
| Sep 23, 2026 | $159.86 | $162.04 | $153.31 | $153.49 | -3.98% | 1,026,755 |
| Sep 22, 2026 | $165.36 | $165.36 | $159.00 | $159.86 | -1.03% | 1,102,409 |
| Sep 21, 2026 | $166.27 | $166.74 | $160.23 | $161.53 | -1.39% | 806,468 |
| Sep 18, 2026 | $160.60 | $163.85 | $159.01 | $163.81 | +1.48% | 1,464,473 |
| Sep 17, 2026 | $164.13 | $166.36 | $160.68 | $161.42 | -1.25% | 646,798 |
| Sep 16, 2026 | $172.01 | $173.55 | $162.12 | $163.47 | -4.78% | 690,987 |
| Sep 15, 2026 | $169.75 | $172.76 | $167.97 | $171.68 | +0.34% | 621,746 |
| Sep 14, 2026 | $168.51 | $171.36 | $165.43 | $171.09 | +2.30% | 906,311 |
| Sep 11, 2026 | $174.12 | $175.38 | $166.74 | $167.25 | -1.84% | 552,413 |
| Sep 10, 2026 | $176.50 | $179.96 | $169.26 | $170.38 | -5.23% | 1,009,478 |
| Sep 9, 2026 | $183.15 | $183.33 | $178.52 | $179.79 | -2.84% | 587,935 |
| Sep 8, 2026 | $175.55 | $185.35 | $172.98 | $185.04 | +4.27% | 1,158,568 |
| Sep 4, 2026 | $177.80 | $181.52 | $175.14 | $177.47 | -1.60% | 572,538 |
| Sep 3, 2026 | $180.80 | $181.30 | $178.72 | $180.35 | +0.46% | 610,187 |
| Sep 2, 2026 | $176.87 | $182.28 | $176.35 | $179.53 | +1.60% | 768,719 |
| Sep 1, 2026 | $179.97 | $180.14 | $175.33 | $176.70 | -1.59% | 507,237 |
| Aug 31, 2026 | $178.67 | $180.08 | $174.28 | $179.56 | -0.17% | 455,572 |
| Aug 28, 2026 | $181.10 | $182.23 | $177.77 | $179.87 | -1.12% | 553,529 |
| Aug 27, 2026 | $178.51 | $183.32 | $178.43 | $181.91 | +0.74% | 442,313 |
| Aug 26, 2026 | $180.11 | $181.89 | $176.82 | $180.57 | -0.45% | 506,040 |
| Aug 25, 2026 | $186.21 | $187.14 | $179.20 | $181.39 | -2.29% | 639,693 |
| Aug 24, 2026 | $184.13 | $186.88 | $181.75 | $185.65 | +0.41% | 622,292 |
| Aug 21, 2026 | $185.00 | $187.60 | $183.68 | $184.89 | 0.00% | 440,096 |
| Aug 20, 2026 | $187.73 | $191.62 | $183.25 | $184.89 | -2.46% | 791,869 |
| Aug 19, 2026 | $186.00 | $190.06 | $185.96 | $189.55 | +2.93% | 505,426 |
| Aug 18, 2026 | $185.00 | $186.66 | $175.04 | $184.15 | -0.79% | 625,626 |
| Aug 17, 2026 | $183.55 | $186.03 | $181.84 | $185.62 | +0.59% | 734,774 |
| Aug 14, 2026 | $189.89 | $190.00 | $184.22 | $184.53 | -2.60% | 743,405 |
| Aug 13, 2026 | $187.00 | $189.69 | $185.82 | $189.45 | +1.51% | 762,150 |
| Aug 12, 2026 | $179.80 | $186.75 | $177.57 | $186.63 | +2.54% | 754,151 |
| Aug 11, 2026 | $180.47 | $183.91 | $178.58 | $182.00 | +0.32% | 723,323 |
| Aug 10, 2026 | $180.00 | $183.49 | $178.78 | $181.42 | +0.78% | 646,071 |
| Aug 7, 2026 | $172.94 | $180.62 | $172.22 | $180.02 | +5.28% | 768,790 |
| Aug 6, 2026 | $171.17 | $171.99 | $168.39 | $170.99 | +0.04% | 574,997 |
| Aug 5, 2026 | $172.01 | $172.01 | $167.81 | $170.93 | +0.23% | 705,742 |
| Aug 4, 2026 | $171.75 | $172.91 | $167.64 | $170.53 | -0.20% | 799,737 |
| Aug 3, 2026 | $168.66 | $173.98 | $168.60 | $170.87 | +2.49% | 1,108,936 |
| Jul 31, 2026 | $166.58 | $171.55 | $165.37 | $166.72 | -1.07% | 1,032,220 |
| Jul 30, 2026 | $180.22 | $184.00 | $165.78 | $168.52 | +4.24% | 2,559,596 |
| Jul 29, 2026 | $149.71 | $166.00 | $145.78 | $161.66 | +6.83% | 3,137,806 |
| Jul 28, 2026 | $153.62 | $154.98 | $146.03 | $151.33 | -0.38% | 1,144,674 |
| Jul 27, 2026 | $155.54 | $156.15 | $148.02 | $151.91 | -1.09% | 727,532 |
| Jul 24, 2026 | $154.41 | $155.60 | $151.00 | $153.58 | +0.95% | 379,549 |
| Jul 23, 2026 | $150.46 | $152.93 | $150.46 | $152.13 | -0.48% | 420,733 |
| Jul 22, 2026 | $152.33 | $153.00 | $150.02 | $152.86 | -0.15% | 577,611 |
| Jul 21, 2026 | $154.82 | $158.18 | $152.83 | $153.09 | -1.52% | 476,812 |
| Jul 20, 2026 | $156.46 | $158.22 | $155.12 | $155.46 | -0.87% | 402,917 |
| Jul 17, 2026 | $153.21 | $157.77 | $152.06 | $156.83 | +0.93% | 375,760 |
| Jul 16, 2026 | $157.73 | $161.53 | $155.06 | $155.39 | -0.92% | 705,756 |
| Jul 15, 2026 | $151.45 | $157.71 | $150.51 | $156.84 | +2.88% | 630,560 |
| Jul 14, 2026 | $151.13 | $153.95 | $146.72 | $152.45 | -0.18% | 517,354 |
| Jul 13, 2026 | $153.00 | $155.14 | $151.00 | $152.72 | 0.00% | 442,231 |
| Jul 10, 2026 | $154.05 | $156.60 | $143.11 | $152.72 | -1.52% | 672,327 |
| Jul 9, 2026 | $153.29 | $155.70 | $152.17 | $155.07 | +1.38% | 781,020 |
| Jul 8, 2026 | $151.39 | $154.61 | $149.45 | $152.96 | +1.53% | 1,058,780 |
| Jul 7, 2026 | $148.53 | $151.47 | $146.47 | $150.65 | +1.31% | 710,265 |
| Jul 6, 2026 | $150.00 | $150.26 | $146.69 | $148.70 | +0.24% | 712,964 |
| Jul 2, 2026 | $137.57 | $148.62 | $136.18 | $148.34 | +7.83% | 1,241,013 |
| Jul 1, 2026 | $139.06 | $141.40 | $136.23 | $137.57 | -1.57% | 707,698 |
| Jun 30, 2026 | $141.43 | $141.74 | $136.18 | $139.76 | -1.71% | 1,086,135 |
| Jun 29, 2026 | $143.51 | $143.70 | $139.86 | $142.19 | -1.54% | 1,244,186 |
| Jun 26, 2026 | $142.57 | $145.00 | $140.91 | $144.42 | +1.30% | 1,989,558 |
| Jun 25, 2026 | $139.60 | $145.39 | $137.52 | $142.57 | +3.49% | 787,691 |
| Jun 24, 2026 | $133.07 | $140.77 | $133.02 | $137.76 | +2.31% | 761,433 |
| Jun 23, 2026 | $131.69 | $135.23 | $131.25 | $134.65 | +2.64% | 546,299 |
| Jun 22, 2026 | $130.00 | $131.84 | $128.48 | $131.19 | +0.39% | 806,569 |
| Jun 18, 2026 | $128.97 | $131.73 | $125.43 | $130.68 | +2.57% | 984,179 |
| Jun 17, 2026 | $128.64 | $131.78 | $126.67 | $127.41 | -0.09% | 1,040,930 |
| Jun 16, 2026 | $130.68 | $132.24 | $127.09 | $127.53 | -2.01% | 724,523 |
| Jun 15, 2026 | $128.58 | $130.67 | $127.83 | $130.14 | +2.63% | 801,979 |
| Jun 12, 2026 | $124.97 | $128.27 | $122.69 | $126.81 | +2.05% | 707,981 |
| Jun 11, 2026 | $125.08 | $127.29 | $123.00 | $124.26 | +1.45% | 629,397 |
| Jun 10, 2026 | $122.00 | $125.96 | $119.66 | $122.49 | -3.05% | 1,542,234 |
| Jun 9, 2026 | $123.79 | $129.00 | $123.58 | $126.34 | +3.59% | 1,082,314 |
| Jun 8, 2026 | $124.18 | $126.24 | $121.83 | $121.96 | -2.43% | 962,157 |
| Jun 5, 2026 | $122.67 | $128.05 | $120.61 | $125.00 | +2.72% | 1,444,705 |
| Jun 4, 2026 | $114.19 | $123.44 | $113.13 | $121.69 | +7.08% | 1,584,247 |
| Jun 3, 2026 | $108.76 | $115.48 | $108.76 | $113.64 | +2.58% | 1,095,271 |
| Jun 2, 2026 | $101.77 | $113.09 | $100.26 | $110.78 | +7.43% | 1,866,968 |
| Jun 1, 2026 | $103.51 | $105.05 | $99.48 | $103.12 | -0.22% | 1,431,293 |
| May 29, 2026 | $106.57 | $108.42 | $101.47 | $103.35 | -2.98% | 1,708,764 |
| May 28, 2026 | $108.30 | $111.05 | $105.92 | $106.52 | -3.06% | 1,563,945 |
| May 27, 2026 | $114.09 | $114.51 | $109.27 | $109.88 | -4.43% | 1,231,642 |
| May 26, 2026 | $119.71 | $120.55 | $106.24 | $114.97 | -4.37% | 2,705,971 |
| May 22, 2026 | $139.14 | $139.43 | $118.64 | $120.23 | -13.52% | 2,709,884 |
| May 21, 2026 | $140.64 | $140.64 | $133.62 | $139.03 | -3.33% | 1,308,956 |
| May 20, 2026 | $140.95 | $146.71 | $137.83 | $143.82 | +2.80% | 951,704 |
| May 19, 2026 | $141.32 | $142.85 | $137.32 | $139.90 | -1.60% | 728,869 |
| May 18, 2026 | $144.99 | $148.11 | $141.52 | $142.18 | -1.27% | 814,310 |
| May 15, 2026 | $142.27 | $144.16 | $140.91 | $144.01 | +1.31% | 978,749 |
| May 14, 2026 | $137.73 | $142.20 | $136.34 | $142.15 | +3.54% | 536,356 |
| May 13, 2026 | $135.18 | $138.34 | $133.22 | $137.29 | +0.68% | 490,229 |
| May 12, 2026 | $135.10 | $137.20 | $133.11 | $136.36 | +0.73% | 667,105 |
| May 11, 2026 | $132.36 | $136.26 | $130.64 | $135.37 | +1.39% | 814,293 |
| May 8, 2026 | $135.12 | $135.26 | $130.04 | $133.52 | -0.47% | 454,477 |
| May 7, 2026 | $136.35 | $137.34 | $132.12 | $134.15 | -0.83% | 549,156 |
| May 6, 2026 | $133.69 | $136.41 | $131.35 | $135.27 | +1.39% | 889,289 |
| May 5, 2026 | $137.10 | $137.87 | $131.94 | $133.42 | -1.79% | 888,359 |
| May 4, 2026 | $139.68 | $141.22 | $134.74 | $135.85 | -3.12% | 942,764 |
| May 1, 2026 | $143.54 | $146.75 | $140.22 | $140.22 | -2.40% | 1,317,367 |
| Apr 30, 2026 | $141.50 | $145.50 | $130.90 | $143.67 | +22.84% | 2,674,243 |
| Apr 29, 2026 | $117.84 | $120.07 | $113.00 | $116.96 | -2.23% | 1,164,271 |
| Apr 28, 2026 | $122.21 | $123.05 | $118.70 | $119.63 | -2.00% | 494,504 |
| Apr 27, 2026 | $121.57 | $124.38 | $120.82 | $122.07 | +0.49% | 802,376 |
| Apr 24, 2026 | $121.10 | $122.28 | $119.03 | $121.48 | +0.50% | 455,022 |
| Apr 23, 2026 | $121.25 | $123.21 | $119.84 | $120.87 | -0.64% | 473,875 |
| Apr 22, 2026 | $123.50 | $126.39 | $120.64 | $121.65 | -0.38% | 459,706 |
| Apr 21, 2026 | $123.98 | $125.30 | $121.17 | $122.11 | -1.96% | 496,806 |
| Apr 20, 2026 | $123.78 | $127.00 | $122.53 | $124.55 | -0.19% | 442,187 |
| Apr 17, 2026 | $123.80 | $127.00 | $123.41 | $124.79 | +2.61% | 585,704 |
| Apr 16, 2026 | $121.13 | $123.40 | $120.41 | $121.62 | +0.51% | 793,519 |
| Apr 15, 2026 | $121.02 | $122.00 | $118.57 | $121.00 | +0.40% | 491,763 |
| Apr 14, 2026 | $119.50 | $122.00 | $119.50 | $120.52 | +0.86% | 579,118 |
| Apr 13, 2026 | $116.33 | $119.67 | $116.00 | $119.49 | +2.65% | 543,383 |
| Apr 10, 2026 | $120.67 | $120.96 | $116.10 | $116.40 | -2.55% | 522,054 |
| Apr 9, 2026 | $118.28 | $120.67 | $115.28 | $119.45 | +0.70% | 536,001 |
| Apr 8, 2026 | $119.85 | $123.01 | $117.45 | $118.62 | +3.09% | 799,013 |
| Apr 7, 2026 | $115.01 | $117.47 | $113.26 | $115.06 | -1.40% | 707,039 |
| Apr 6, 2026 | $112.26 | $116.81 | $110.50 | $116.69 | +3.48% | 846,016 |
| Apr 2, 2026 | $109.79 | $113.90 | $108.72 | $112.77 | +0.12% | 591,427 |
| Apr 1, 2026 | $108.69 | $113.66 | $107.68 | $112.64 | +4.63% | 1,000,414 |
| Mar 31, 2026 | $106.75 | $108.90 | $104.78 | $107.66 | +2.52% | 627,562 |
| Mar 30, 2026 | $103.49 | $105.47 | $102.12 | $105.01 | +1.77% | 607,992 |
| Mar 27, 2026 | $106.74 | $106.74 | $102.12 | $103.18 | -4.24% | 625,325 |
| Mar 26, 2026 | $108.51 | $110.13 | $107.31 | $107.75 | -1.69% | 885,505 |
| Mar 25, 2026 | $106.46 | $109.67 | $105.40 | $109.60 | +4.15% | 706,196 |
| Mar 24, 2026 | $105.24 | $107.17 | $103.69 | $105.23 | -1.51% | 781,870 |
| Mar 23, 2026 | $104.13 | $107.84 | $102.24 | $106.84 | +5.79% | 1,085,909 |
| Mar 20, 2026 | $104.52 | $105.36 | $100.15 | $100.99 | -1.08% | 1,143,660 |
| Mar 19, 2026 | $102.99 | $104.55 | $100.46 | $102.09 | -1.09% | 603,077 |
| Mar 18, 2026 | $101.70 | $104.64 | $101.29 | $103.22 | +0.28% | 562,191 |
| Mar 17, 2026 | $99.15 | $103.08 | $98.92 | $102.93 | +4.03% | 816,077 |
| Mar 16, 2026 | $97.99 | $99.54 | $96.47 | $98.94 | +1.98% | 476,988 |
| Mar 13, 2026 | $98.43 | $100.73 | $95.87 | $97.02 | -0.79% | 646,412 |
| Mar 12, 2026 | $100.75 | $101.91 | $97.14 | $97.79 | -4.93% | 866,909 |
| Mar 11, 2026 | $102.78 | $104.14 | $100.47 | $102.86 | -0.28% | 508,164 |
| Mar 10, 2026 | $105.81 | $106.78 | $102.30 | $103.15 | -2.49% | 875,043 |
| Mar 9, 2026 | $105.83 | $106.22 | $99.84 | $105.78 | -1.81% | 952,958 |
| Mar 6, 2026 | $110.00 | $110.02 | $106.50 | $107.73 | -3.90% | 622,729 |
| Mar 5, 2026 | $113.28 | $114.40 | $111.40 | $112.10 | -2.83% | 436,765 |
| Mar 4, 2026 | $117.19 | $117.74 | $114.84 | $115.37 | -2.02% | 301,904 |
| Mar 3, 2026 | $118.52 | $118.52 | $112.66 | $117.75 | -2.78% | 589,484 |
| Mar 2, 2026 | $119.04 | $121.27 | $116.95 | $121.12 | +0.60% | 1,171,415 |
| Feb 27, 2026 | $119.69 | $121.03 | $118.43 | $120.40 | -0.85% | 614,602 |
| Feb 26, 2026 | $122.00 | $123.16 | $120.70 | $121.43 | +0.45% | 637,647 |
| Feb 25, 2026 | $120.10 | $121.72 | $117.96 | $120.89 | +1.44% | 797,548 |
| Feb 24, 2026 | $121.26 | $122.48 | $118.77 | $119.17 | -1.03% | 540,652 |
| Feb 23, 2026 | $119.12 | $120.74 | $118.22 | $120.41 | +0.12% | 665,667 |
| Feb 20, 2026 | $116.33 | $120.80 | $116.30 | $120.27 | +2.71% | 756,219 |
| Feb 19, 2026 | $119.47 | $120.19 | $114.90 | $117.10 | -3.22% | 1,128,638 |
| Feb 18, 2026 | $103.55 | $121.70 | $103.55 | $121.00 | +13.47% | 1,789,645 |
| Feb 17, 2026 | $109.73 | $111.78 | $106.58 | $106.64 | -2.59% | 1,263,524 |
| Feb 13, 2026 | $107.59 | $110.62 | $106.75 | $109.47 | +2.56% | 606,818 |
| Feb 12, 2026 | $108.87 | $109.34 | $105.37 | $106.74 | -2.10% | 498,146 |
| Feb 11, 2026 | $114.99 | $114.99 | $106.43 | $109.03 | -3.54% | 869,194 |
| Feb 10, 2026 | $113.42 | $115.19 | $112.64 | $113.03 | -0.21% | 435,297 |
| Feb 9, 2026 | $112.63 | $113.51 | $110.39 | $113.27 | +0.67% | 538,820 |
| Feb 6, 2026 | $114.37 | $114.98 | $110.65 | $112.52 | -0.88% | 951,657 |
| Feb 5, 2026 | $114.90 | $116.76 | $112.67 | $113.52 | -1.00% | 787,388 |
| Feb 4, 2026 | $117.95 | $118.10 | $110.72 | $114.67 | -2.94% | 930,111 |
| Feb 3, 2026 | $118.52 | $119.57 | $116.40 | $118.14 | +0.57% | 501,592 |
| Feb 2, 2026 | $119.64 | $121.74 | $117.41 | $117.47 | -1.60% | 530,479 |
| Jan 30, 2026 | $120.14 | $123.54 | $116.63 | $119.38 | +0.26% | 761,121 |
| Jan 29, 2026 | $123.94 | $123.94 | $118.67 | $119.07 | -3.93% | 753,073 |
| Jan 28, 2026 | $122.10 | $128.84 | $121.85 | $123.94 | +4.41% | 1,063,232 |
| Jan 27, 2026 | $123.57 | $124.00 | $116.73 | $118.70 | -4.48% | 793,151 |
| Jan 26, 2026 | $121.45 | $124.39 | $118.55 | $124.27 | +3.58% | 872,424 |
| Jan 23, 2026 | $124.95 | $125.04 | $119.86 | $119.98 | -4.70% | 792,018 |
| Jan 22, 2026 | $126.98 | $130.23 | $125.05 | $125.90 | +1.40% | 1,437,302 |
| Jan 21, 2026 | $121.31 | $124.83 | $119.69 | $124.16 | +0.58% | 910,211 |
| Jan 20, 2026 | $118.57 | $124.44 | $118.26 | $123.45 | +2.67% | 1,231,838 |
| Jan 16, 2026 | $114.57 | $121.63 | $113.97 | $120.24 | +5.03% | 1,467,760 |
| Jan 15, 2026 | $104.56 | $114.67 | $103.11 | $114.48 | +9.62% | 1,356,765 |
| Jan 14, 2026 | $94.81 | $105.10 | $93.96 | $104.43 | -5.26% | 2,222,119 |
| Jan 13, 2026 | $110.70 | $111.53 | $108.71 | $110.23 | -0.61% | 691,583 |
| Jan 12, 2026 | $112.11 | $112.11 | $109.24 | $110.91 | -1.78% | 293,707 |
| Jan 9, 2026 | $113.90 | $114.77 | $110.71 | $112.92 | -1.08% | 575,942 |
| Jan 8, 2026 | $112.40 | $115.00 | $111.97 | $114.15 | +0.37% | 625,732 |
| Jan 7, 2026 | $112.63 | $114.57 | $112.55 | $113.73 | +1.29% | 388,041 |
| Jan 6, 2026 | $111.38 | $113.81 | $109.07 | $112.28 | -0.20% | 718,641 |
| Jan 5, 2026 | $110.71 | $113.97 | $110.71 | $112.51 | +1.62% | 487,895 |
| Jan 2, 2026 | $114.47 | $114.47 | $110.46 | $110.72 | -1.94% | 517,287 |
| Dec 31, 2025 | $114.14 | $114.62 | $112.63 | $112.91 | -1.16% | 341,602 |
| Dec 30, 2025 | $115.34 | $115.89 | $114.05 | $114.24 | -1.13% | 359,633 |
| Dec 29, 2025 | $116.09 | $116.78 | $115.00 | $115.55 | -0.57% | 309,912 |
| Dec 26, 2025 | $116.11 | $116.80 | $115.22 | $116.21 | -0.37% | 255,847 |
| Dec 24, 2025 | $116.38 | $117.94 | $116.20 | $116.64 | +0.40% | 200,131 |
| Dec 23, 2025 | $116.83 | $117.13 | $115.07 | $116.18 | -0.78% | 378,390 |
| Dec 22, 2025 | $117.22 | $118.17 | $115.21 | $117.09 | +0.75% | 601,976 |
| Dec 19, 2025 | $113.26 | $116.38 | $112.67 | $116.22 | +2.66% | 1,150,201 |
| Dec 18, 2025 | $114.32 | $116.72 | $113.11 | $113.21 | +0.70% | 739,458 |
| Dec 17, 2025 | $113.57 | $115.82 | $111.81 | $112.42 | -1.18% | 871,516 |
| Dec 16, 2025 | $111.56 | $114.81 | $111.09 | $113.76 | +1.82% | 1,188,017 |
| Dec 15, 2025 | $109.93 | $112.64 | $109.33 | $111.73 | +2.62% | 1,466,139 |
| Dec 12, 2025 | $108.96 | $110.37 | $108.45 | $108.88 | -0.32% | 477,183 |
| Dec 11, 2025 | $109.20 | $110.87 | $108.16 | $109.23 | +0.47% | 787,728 |
| Dec 10, 2025 | $106.71 | $109.38 | $105.88 | $108.72 | +1.73% | 1,023,785 |
| Dec 9, 2025 | $108.96 | $110.02 | $106.52 | $106.87 | -1.47% | 737,959 |
| Dec 8, 2025 | $109.45 | $109.74 | $107.28 | $108.46 | -0.05% | 642,434 |
| Dec 5, 2025 | $109.17 | $112.00 | $107.65 | $108.51 | -0.31% | 467,756 |
| Dec 4, 2025 | $107.52 | $110.02 | $107.30 | $108.85 | +1.29% | 702,043 |
| Dec 3, 2025 | $106.50 | $109.31 | $106.03 | $107.46 | +1.31% | 763,065 |
| Dec 2, 2025 | $106.25 | $107.83 | $104.84 | $106.07 | -0.04% | 655,849 |
| Dec 1, 2025 | $105.29 | $106.61 | $104.11 | $106.11 | -0.17% | 570,248 |
| Nov 28, 2025 | $105.00 | $107.18 | $104.83 | $106.29 | +0.85% | 244,165 |
| Nov 26, 2025 | $103.23 | $107.00 | $103.18 | $105.39 | +1.00% | 1,075,607 |
| Nov 25, 2025 | $98.67 | $106.04 | $98.67 | $104.35 | +6.41% | 1,340,422 |
| Nov 24, 2025 | $98.71 | $100.34 | $96.35 | $98.06 | -1.57% | 1,129,170 |
| Nov 21, 2025 | $94.94 | $99.73 | $93.78 | $99.62 | +4.64% | 1,286,135 |
| Nov 20, 2025 | $97.20 | $98.45 | $95.05 | $95.20 | -1.34% | 790,584 |
| Nov 19, 2025 | $92.00 | $97.79 | $91.84 | $96.49 | +5.29% | 1,524,307 |
| Nov 18, 2025 | $88.20 | $92.49 | $87.32 | $91.64 | +3.67% | 889,594 |
| Nov 17, 2025 | $89.51 | $92.60 | $88.28 | $88.40 | -1.81% | 984,500 |
| Nov 14, 2025 | $90.65 | $93.14 | $88.76 | $90.03 | -1.94% | 1,131,063 |
| Nov 13, 2025 | $91.17 | $97.22 | $91.17 | $91.81 | -0.86% | 2,607,520 |
| Nov 12, 2025 | $90.87 | $93.00 | $88.60 | $92.61 | +3.03% | 1,679,720 |
| Nov 11, 2025 | $88.82 | $92.14 | $88.72 | $89.89 | +1.74% | 1,530,391 |
| Nov 10, 2025 | $83.78 | $88.61 | $83.78 | $88.35 | +5.35% | 1,140,707 |
| Nov 7, 2025 | $81.80 | $84.36 | $80.91 | $83.86 | +2.53% | 988,285 |
| Nov 6, 2025 | $83.95 | $84.08 | $81.61 | $81.79 | -3.03% | 597,606 |
| Nov 5, 2025 | $85.25 | $86.82 | $83.36 | $84.35 | -1.86% | 691,823 |
| Nov 4, 2025 | $85.86 | $88.29 | $85.16 | $85.95 | -1.65% | 767,468 |
| Nov 3, 2025 | $88.09 | $88.67 | $83.46 | $87.39 | -0.77% | 1,373,861 |
| Oct 31, 2025 | $86.53 | $90.62 | $85.86 | $88.07 | +0.31% | 1,634,380 |
| Oct 30, 2025 | $95.07 | $102.80 | $85.85 | $87.80 | +13.89% | 4,834,361 |
| Oct 29, 2025 | $77.07 | $81.00 | $76.88 | $77.09 | -0.90% | 2,372,113 |
| Oct 28, 2025 | $75.00 | $77.83 | $73.16 | $77.79 | +2.79% | 1,468,680 |
| Oct 27, 2025 | $79.50 | $79.50 | $74.51 | $75.68 | +1.35% | 2,699,433 |
| Oct 24, 2025 | $75.80 | $76.08 | $74.55 | $74.67 | -0.78% | 1,309,090 |
| Oct 23, 2025 | $76.21 | $77.07 | $75.01 | $75.26 | -1.79% | 883,868 |
| Oct 22, 2025 | $76.99 | $76.99 | $74.44 | $76.63 | +0.99% | 1,689,721 |
| Oct 21, 2025 | $79.51 | $79.73 | $73.73 | $75.88 | -4.52% | 3,138,694 |
| Oct 20, 2025 | $88.80 | $89.75 | $75.36 | $79.47 | – | 3,190,270 |
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% |