GKOS — GLAUKOS Corp
Price · 2024-08-26 → 2026-08-21
499 daily closes shownAnonymous view is capped at two years of history. A free account extends it to five, and Pro opens the whole archive back to 2016-01-04.
Performance
Technicals
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Measured signals that fired on GKOS
| date | signal | measured base rate |
|---|---|---|
| 2026-08-19 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
| 2026-08-10 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-08-05 | Bollinger bandwidth breaks out of its own compression structure | -0.63% over 21 days · t = -2.80 · n = 7,196 statistically distinguishable from its control group |
| 2026-08-03 | Breakout to a 52-week high price | -1.00% over 21 days · t = -8.58 · n = 24,386 statistically distinguishable from its control group |
| 2026-07-30 | Fair value gap, bullish structure | -0.67% over 21 days · t = -6.43 · n = 111,973 statistically distinguishable from its control group |
| 2026-07-10 | Equal highs taken out structure | -0.70% over 21 days · t = -8.28 · n = 68,636 statistically distinguishable from its control group |
Excess return against a matched control group, on a point-in-time universe that includes delisted companies. Most families do not survive that. How the measurement works →
Insider transactions (Form 4)
| date | insider | what | shares | price | value |
|---|---|---|---|---|---|
| 2026-08-19 | Kliman Gilbert H Director | Open-market sale | 2.5K | 190.00 | 475.0K |
| 2026-08-19 | Kliman Gilbert H Director | Option exercise | 2.5K | 25.77 | 64.4K |
| 2026-08-11 | Gilliam Joseph E PRESIDENT & COO | Open-market sale | 32.0K | 180.49 | 5.8M |
| 2026-08-11 | Gilliam Joseph E PRESIDENT & COO | Open-market sale | 28.0K | 178.89 | 5.0M |
| 2026-08-11 | Gilliam Joseph E PRESIDENT & COO | Option exercise | 20.0K | 55.18 | 1.1M |
| 2026-08-11 | Gilliam Joseph E PRESIDENT & COO | Option exercise | 20.0K | 55.18 | 1.1M |
| 2026-08-11 | Gilliam Joseph E PRESIDENT & COO | Option exercise | 10.0K | 48.46 | 484.6K |
| 2026-08-11 | Gilliam Joseph E PRESIDENT & COO | Option exercise | 10.0K | 48.46 | 484.6K |
| 2026-08-07 | Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER | Open-market sale 10b5-1 plan | 20.0K | 180.13 | 3.6M |
| 2026-08-07 | Thurman Alex R. SVP & CHIEF FINANCIAL OFFICER | Option exercise 10b5-1 plan | 20.0K | 33.81 | 676.2K |
Open-market purchases (code P) are the informative ones. Grants, option exercises and tax withholding are compensation mechanics, not decisions. How to read a Form 4 →
Largest institutional holders
| manager | value | shares |
|---|---|---|
| BlackRock, Inc. | 978.6M | 9.1M |
| JANUS HENDERSON GROUP PLC | 575.8M | 5.3M |
| PRIMECAP MANAGEMENT CO/CA/ | 362.9M | 3.4M |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 345.4M | 3.2M |
| VANGUARD CAPITAL MANAGEMENT LLC | 270.1M | 2.5M |
| STATE STREET CORP | 235.0M | 2.2M |
| AMERIPRISE FINANCIAL INC | 173.4M | 1.6M |
| ALLIANCEBERNSTEIN L.P. | 157.8M | 1.4M |
| CITADEL ADVISORS LLC | 155.8M | 1.4M |
| Holocene Advisors, LP | 149.0M | 1.4M |
13F positions as of 2026-03-31, filed up to 45 days after quarter end. Long-only US equity — shorts and derivatives never appear. What 13F does and does not show →
Short selling
This is off-exchange short volume, not short interest: it is flow, not position, and 40–50% is normal because market makers short to fill your buy. Why that number misleads →
Recent headlines
- Glaukos (GKOS) Is Up 6.7% After Raising 2026 Sales Guidance And Narrowing Quarterly Loss - simplywall.st · 2026-08-12 · simplywall.st
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