GLAUKOS Corp
GKOS- Exchange
- NYSE
- Industry
- Surgical & Medical Instruments & Apparatus
- SEC CIK
- 0001192448
In the last 90 days, GLAUKOS Corp insiders filed 0 open-market purchases and 11 sales; 367 institutions reported holding it in 13F filings for Q2 2026, worth $8.44B in total; no superinvestor holds it.
13F holders, Q1 2026
Institutional positions in GLAUKOS Corp as of Mar 31, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 336
- +10 vs. Q4 2025
- Shares held
- 58.0M
- +7.48M (+14.8%) vs. Q4 2025
- Total value
- $6.25B
- +$549.2M (+9.6%) vs. Q4 2025
- New holders
- 50
- 110 more added
- Sold out
- 40
- 127 more reduced
6 institutions that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting GKOS on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 367 | $8.44B |
| Q1 2026 | 336 | $6.25B |
| Q4 2025 | 332 | $6.44B |
| Q3 2025 | 315 | $4.56B |
| Q2 2025 | 298 | $6.30B |
| Q1 2025 | 317 | $5.67B |
| Q4 2024 | 322 | $8.57B |
| Q3 2024 | 315 | $7.15B |
| Q2 2024 | 282 | $6.39B |
| Q1 2024 | 254 | $4.89B |
| Q4 2023 | 246 | $4.05B |
| Q3 2023 | 233 | $3.75B |
| Q2 2023 | 220 | $3.45B |
| Q1 2023 | 203 | $2.37B |
| Q4 2022 | 215 | $2.03B |
| Q3 2022 | 222 | $2.36B |
| Q2 2022 | 199 | $2.01B |
| Q1 2022 | 211 | $2.50B |
| Q4 2021 | 208 | $1.94B |
| Q3 2021 | 206 | $2.13B |
| Q2 2021 | 219 | $4.10B |
| Q1 2021 | 217 | $4.13B |
Institutions, Q1 2026
Shares, value and share of portfolio for each institution holding GLAUKOS Corp; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Champlain Investment Partners, LLC | 319,027 | $34.3M | 0.44% | −14,237−4.3% | Reduced |
| Price T Rowe Associates Inc | 336,425 | $36.2M | 0.00% | +214,256+175.4% | Added |
| Bank of New York Mellon Corp | 343,173 | $36.9M | 0.01% | −12,667−3.6% | Reduced |
| Capital International Investors | 373,343 | $40.2M | 0.01% | −138,167−27.0% | Reduced |
| UBS Group AG | 386,400 | $41.6M | 0.01% | −487,542−55.8% | Reduced |
| Vanguard Fiduciary Trust Co | 396,719 | $42.7M | 0.01% | +396,719 | New |
| Nuveen, LLC | 398,329 | $42.9M | 0.01% | −7,717−1.9% | Reduced |
| Allspring Global Investments Holdings, LLC | 393,831 | $44.4M | 0.07% | +38,552+10.9% | Added |
| Loomis Sayles & Co L P | 421,240 | $45.4M | 0.06% | −26,565−5.9% | Reduced |
| Riverbridge Partners LLC | 433,228 | $46.6M | 1.14% | −101,941−19.0% | Reduced |
| Westfield Capital Management Co LP | 482,219 | $51.9M | 0.22% | +482,219 | New |
| Jennison Associates LLC | 487,020 | $52.4M | 0.04% | +487,020 | New |
| Driehaus Capital Management LLC | 487,912 | $52.5M | 0.39% | +487,912 | New |
| Northern Trust Corp | 576,209 | $62.0M | 0.01% | −10,921−1.9% | Reduced |
| Artisan Partners Limited Partnership | 607,462 | $65.4M | 0.11% | −95,356−13.6% | Reduced |
| Nomura Asset Management International Inc. | 612,063 | $65.9M | 0.11% | −60,895−9.0% | Reduced |
| Bank of America Corp | 657,432 | $70.8M | 0.01% | +118,754+22.0% | Added |
| Morgan Stanley | 678,825 | $73.1M | 0.00% | +8,047+1.2% | Added |
| Charles Schwab Investment Management Inc | 714,389 | $76.9M | 0.01% | +363+0.1% | Added |
| Braidwell LP | 763,505 | $82.2M | 2.74% | −158,474−17.2% | Reduced |
| Invesco Ltd. | 914,188 | $98.4M | 0.01% | +133,921+17.2% | Added |
| Capital World Investors | 989,060 | $106.5M | 0.01% | +138,167+16.2% | Added |
| William Blair Investment Management, LLC | 1,073,819 | $115.6M | 0.38% | −33,099−3.0% | Reduced |
| Millennium Management LLC | 1,173,696 | $126.4M | 0.09% | −436,003−27.1% | Reduced |
| Geode Capital Management, LLC | 1,356,453 | $146.1M | 0.01% | +38,805+2.9% | Added |
| Goldman Sachs Group Inc | 1,374,958 | $148.0M | 0.02% | +24,533+1.8% | Added |
| Holocene Advisors, LP | 1,383,715 | $149.0M | 0.36% | +84,421+6.5% | Added |
| Citadel Advisors LLC | 1,446,926 | $155.8M | 0.11% | +1,419,970+5,267.7% | Added |
| Alliancebernstein L.P. | 1,397,556 | $157.8M | 0.05% | −245,892−15.0% | Reduced |
| Ameriprise Financial Inc | 1,610,774 | $173.4M | 0.04% | −493,520−23.5% | Reduced |
| State Street Corp | 2,182,617 | $235.0M | 0.01% | +60,215+2.8% | Added |
| Vanguard Capital Management LLC | 2,508,771 | $270.1M | 0.01% | +2,508,771 | New |
| Vanguard Portfolio Management LLC | 3,208,363 | $345.4M | 0.02% | +3,208,363 | New |
| Primecap Management Co | 3,370,628 | $362.9M | 0.29% | −6,300−0.2% | Reduced |
| Janus Henderson Group PLC | 5,348,395 | $575.8M | 0.27% | +2,329,608+77.2% | Added |
| BlackRock, Inc. | 9,090,029 | $978.6M | 0.02% | −74,509−0.8% | Reduced |
| Sofinnova Investments, Inc. | 0 | $0 | 0.00% | −288,128−100.0% | Sold out |
| Perceptive Advisors LLC | 0 | $0 | 0.00% | −140,000−100.0% | Sold out |
| Defilade Capital Management, L.P. | 0 | $0 | 0.00% | −91,703−100.0% | Sold out |
| Balyasny Asset Management LLC | 0 | $0 | 0.00% | −87,171−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −69,000−100.0% | Sold out |
| Resolute Capital Asset Partners LLC | 0 | $0 | 0.00% | −40,500−100.0% | Sold out |
| Connor, Clark & Lunn Investment Management Ltd. | 0 | $0 | 0.00% | −30,070−100.0% | Sold out |
| SummitTX Capital, L.P. | 0 | $0 | 0.00% | −29,534−100.0% | Sold out |
| Clough Capital Partners L P | 0 | $0 | 0.00% | −20,368−100.0% | Sold out |
| CenterBook Partners LP | 0 | $0 | 0.00% | −13,257−100.0% | Sold out |
| Capital Fund Management S.A. | 0 | $0 | 0.00% | −12,627−100.0% | Sold out |
| Dark Forest Capital Management LP | 0 | $0 | 0.00% | −12,268−100.0% | Sold out |
| Teacher Retirement System of Texas | 0 | $0 | 0.00% | −10,407−100.0% | Sold out |
| Lighthouse Investment Partners, LLC | 0 | $0 | 0.00% | −10,000−100.0% | Sold out |
| Prelude Capital Management, LLC | 0 | $0 | 0.00% | −9,200−100.0% | Sold out |
| Evoke Wealth, LLC | 0 | $0 | 0.00% | −7,441−100.0% | Sold out |
| Legato Capital Management LLC | 0 | $0 | 0.00% | −6,700−100.0% | Sold out |
| Mariner, LLC | 0 | $0 | 0.00% | −5,960−100.0% | Sold out |
| Entropy Technologies, LP | 0 | $0 | 0.00% | −4,114−100.0% | Sold out |
| Persistent Asset Partners Ltd | 0 | $0 | 0.00% | −3,770−100.0% | Sold out |
| Third View Private Wealth, LLC | 0 | $0 | 0.00% | −2,830−100.0% | Sold out |
| Gotham Asset Management, LLC | 0 | $0 | 0.00% | −2,666−100.0% | Sold out |
| Inspire Advisors, LLC | 0 | $0 | 0.00% | −2,645−100.0% | Sold out |
| Bayforest Capital Ltd | 0 | $0 | 0.00% | −2,499−100.0% | Sold out |
| Colony Group, LLC | 0 | $0 | 0.00% | −1,957−100.0% | Sold out |
| MML Investors Services, LLC | 0 | $0 | 0.00% | −1,839−100.0% | Sold out |
| Kestra Advisory Services, LLC | 0 | $0 | 0.00% | −1,137−100.0% | Sold out |
| Twin Tree Management, LP | 0 | $0 | 0.00% | −1,070−100.0% | Sold out |
| OP Asset Management Ltd | 0 | $0 | 0.00% | −355−100.0% | Sold out |
| Danske Bank A/S | 0 | $0 | 0.00% | −300−100.0% | Sold out |
| Quest Partners LLC | 0 | $0 | 0.00% | −270−100.0% | Sold out |
| Torren Management, LLC | 0 | $0 | 0.00% | −153−100.0% | Sold out |
| DV Trading LLC | 0 | $0 | 0.00% | −100−100.0% | Sold out |
| SJS Investment Consulting Inc. | 0 | $0 | 0.00% | −68−100.0% | Sold out |
| SageView Advisory Group, LLC | 0 | $0 | 0.00% | −65−100.0% | Sold out |
| Clearstead Advisors, LLC | 0 | $0 | 0.00% | −57−100.0% | Sold out |
| T. Rowe Price Investment Management, Inc. | 0 | $0 | 0.00% | −25−100.0% | Sold out |
| Kilter Group LLC | 0 | $0 | 0.00% | −16−100.0% | Sold out |
| SHP Wealth Management | 0 | $0 | 0.00% | −5−100.0% | Sold out |
| Dunhill Financial, LLC | 0 | $0 | 0.00% | −1−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |
| Norges Bank | – | – | – | – | Not filed |
| Comerica Bank | – | – | – | – | Not filed |
| CIBC World Markets Corp | – | – | – | – | Not filed |
| Global Retirement Partners, LLC | – | – | – | – | Not filed |
| CIBC Private Wealth Group, LLC | – | – | – | – | Not filed |