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 10 sales; 367 institutions reported holding it in 13F filings for Q2 2026, worth $8.46B 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 | $8.46B |
| Q1 2026 | 336 | $6.25B |
| Q4 2025 | 332 | $6.45B |
| Q3 2025 | 315 | $4.62B |
| Q2 2025 | 298 | $6.32B |
| Q1 2025 | 317 | $5.73B |
| Q4 2024 | 322 | $8.57B |
| Q3 2024 | 315 | $7.20B |
| Q2 2024 | 282 | $6.58B |
| Q1 2024 | 254 | $5.15B |
| Q4 2023 | 246 | $4.15B |
| Q3 2023 | 233 | $3.80B |
| Q2 2023 | 220 | $3.51B |
| Q1 2023 | 203 | $2.39B |
| Q4 2022 | 215 | $2.07B |
| Q3 2022 | 222 | $2.45B |
| Q2 2022 | 199 | $2.05B |
| Q1 2022 | 211 | $2.50B |
| Q4 2021 | 208 | $1.97B |
| 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 |
|---|---|---|---|---|---|
| BlackRock, Inc. | 9,090,029 | $978.6M | 0.02% | −74,509−0.8% | Reduced |
| Janus Henderson Group PLC | 5,348,395 | $575.8M | 0.27% | +2,329,608+77.2% | Added |
| Primecap Management Co | 3,370,628 | $362.9M | 0.29% | −6,300−0.2% | Reduced |
| Vanguard Portfolio Management LLC | 3,208,363 | $345.4M | 0.02% | +3,208,363 | New |
| Vanguard Capital Management LLC | 2,508,771 | $270.1M | 0.01% | +2,508,771 | New |
| State Street Corp | 2,182,617 | $235.0M | 0.01% | +60,215+2.8% | Added |
| Ameriprise Financial Inc | 1,610,774 | $173.4M | 0.04% | −493,520−23.5% | Reduced |
| Alliancebernstein L.P. | 1,397,556 | $157.8M | 0.05% | −245,892−15.0% | Reduced |
| Citadel Advisors LLC | 1,446,926 | $155.8M | 0.11% | +1,419,970+5,267.7% | Added |
| Holocene Advisors, LP | 1,383,715 | $149.0M | 0.36% | +84,421+6.5% | Added |
| Goldman Sachs Group Inc | 1,374,958 | $148.0M | 0.02% | +24,533+1.8% | Added |
| Geode Capital Management, LLC | 1,356,453 | $146.1M | 0.01% | +38,805+2.9% | Added |
| Millennium Management LLC | 1,173,696 | $126.4M | 0.09% | −436,003−27.1% | Reduced |
| William Blair Investment Management, LLC | 1,073,819 | $115.6M | 0.38% | −33,099−3.0% | Reduced |
| Capital World Investors | 989,060 | $106.5M | 0.01% | +138,167+16.2% | Added |
| Invesco Ltd. | 914,188 | $98.4M | 0.01% | +133,921+17.2% | Added |
| Braidwell LP | 763,505 | $82.2M | 2.74% | −158,474−17.2% | Reduced |
| Charles Schwab Investment Management Inc | 714,389 | $76.9M | 0.01% | +363+0.1% | Added |
| Morgan Stanley | 678,825 | $73.1M | 0.00% | +8,047+1.2% | Added |
| Bank of America Corp | 657,432 | $70.8M | 0.01% | +118,754+22.0% | Added |
| Nomura Asset Management International Inc. | 612,063 | $65.9M | 0.11% | −60,895−9.0% | Reduced |
| Artisan Partners Limited Partnership | 607,462 | $65.4M | 0.11% | −95,356−13.6% | Reduced |
| Northern Trust Corp | 576,209 | $62.0M | 0.01% | −10,921−1.9% | Reduced |
| Driehaus Capital Management LLC | 487,912 | $52.5M | 0.39% | +487,912 | New |
| Jennison Associates LLC | 487,020 | $52.4M | 0.04% | +487,020 | New |
| Westfield Capital Management Co LP | 482,219 | $51.9M | 0.22% | +482,219 | New |
| Riverbridge Partners LLC | 433,228 | $46.6M | 1.14% | −101,941−19.0% | Reduced |
| Loomis Sayles & Co L P | 421,240 | $45.4M | 0.06% | −26,565−5.9% | Reduced |
| Allspring Global Investments Holdings, LLC | 393,831 | $44.4M | 0.07% | +38,552+10.9% | Added |
| Nuveen, LLC | 398,329 | $42.9M | 0.01% | −7,717−1.9% | Reduced |
| Vanguard Fiduciary Trust Co | 396,719 | $42.7M | 0.01% | +396,719 | New |
| UBS Group AG | 386,400 | $41.6M | 0.01% | −487,542−55.8% | Reduced |
| Capital International Investors | 373,343 | $40.2M | 0.01% | −138,167−27.0% | Reduced |
| Bank of New York Mellon Corp | 343,173 | $36.9M | 0.01% | −12,667−3.6% | Reduced |
| Price T Rowe Associates Inc | 336,425 | $36.2M | 0.00% | +214,256+175.4% | Added |
| Champlain Investment Partners, LLC | 319,027 | $34.3M | 0.44% | −14,237−4.3% | Reduced |
| JPMorgan Chase & Co | 323,819 | $34.0M | 0.00% | −232,660−41.8% | Reduced |
| FMR LLC | 303,266 | $32.6M | 0.00% | +293,183+2,907.7% | Added |
| Clearbridge Investments, LLC | 286,051 | $30.8M | 0.03% | +174,029+155.4% | Added |
| Principal Financial Group Inc | 280,737 | $30.2M | 0.02% | +6,172+2.2% | Added |
| D. E. Shaw & Co., Inc. | 251,176 | $27.0M | 0.02% | −307,114−55.0% | Reduced |
| Brown Capital Management LLC | 230,028 | $24.8M | 3.52% | −96,551−29.6% | Reduced |
| PFM Health Sciences, LP | 215,685 | $23.2M | 2.44% | +14,009+6.9% | Added |
| C WorldWide Group Holding A/S | 207,212 | $22.3M | 0.48% | 00.0% | Unchanged |
| Public Sector Pension Investment Board | 205,484 | $22.1M | 0.07% | +6,667+3.4% | Added |
| Royal Bank of Canada | 204,153 | $22.0M | 0.00% | +12,253+6.4% | Added |
| Dimensional Fund Advisors LP | 199,084 | $21.4M | 0.00% | −6,377−3.1% | Reduced |
| ExodusPoint Capital Management, LP | 179,728 | $19.3M | 0.19% | +179,728 | New |
| Integral Health Asset Management, LLC | 175,000 | $18.8M | 1.00% | −150,000−46.2% | Reduced |
| SEI Investments Co | 161,680 | $17.4M | 0.02% | −20,173−11.1% | Reduced |
| Legal & General Group Plc | 160,542 | $17.3M | 0.00% | −19,156−10.7% | Reduced |
| Rhumbline Advisers | 154,176 | $16.6M | 0.01% | +2,709+1.8% | Added |
| Gilder Gagnon Howe & Co LLC | 152,897 | $16.5M | 0.20% | −1,545−1.0% | Reduced |
| Eventide Asset Management, LLC | 150,036 | $16.2M | 0.27% | −139,239−48.1% | Reduced |
| Wellington Management Group LLP | 149,150 | $16.1M | 0.00% | −337,674−69.4% | Reduced |
| Neuberger Berman Group LLC | 147,894 | $15.9M | 0.01% | +94,116+175.0% | Added |
| Bellevue Group AG | 145,703 | $15.7M | 0.37% | −116,232−44.4% | Reduced |
| Keybank National Association | 145,270 | $15.6M | 0.06% | +2,764+1.9% | Added |
| UBS Asset Management Americas Inc | 143,774 | $15.5M | 0.00% | +582+0.4% | Added |
| AustralianSuper Pty Ltd | 131,535 | $14.2M | 0.07% | −318,311−70.8% | Reduced |
| Silvercrest Asset Management Group LLC | 128,294 | $13.8M | 0.10% | +24,015+23.0% | Added |
| Segall Bryant & Hamill, LLC | 124,951 | $13.5M | 0.19% | −6,453−4.9% | Reduced |
| Lord, Abbett & Co. LLC | 120,214 | $12.9M | 0.04% | +120,214 | New |
| Renaissance Technologies LLC | 118,892 | $12.8M | 0.02% | +118,892 | New |
| Fred Alger Management, LLC | 113,943 | $12.3M | 0.05% | −211,597−65.0% | Reduced |
| Swiss National Bank | 113,600 | $12.2M | 0.01% | +500+0.4% | Added |
| Granite Investment Partners, LLC | 111,872 | $12.0M | 0.74% | −7,471−6.3% | Reduced |
| Qube Research & Technologies Ltd | 108,863 | $11.7M | 0.02% | −79,872−42.3% | Reduced |
| Squarepoint Ops LLC | 108,049 | $11.6M | 0.03% | +108,049 | New |
| Point72 Asset Management, L.P. | 101,340 | $10.9M | 0.02% | −60,256−37.3% | Reduced |
| Raymond James Financial Inc | 98,226 | $10.4M | 0.00% | −542−0.5% | Reduced |
| Osterweis Capital Management Inc | 94,863 | $10.2M | 0.53% | −6,750−6.6% | Reduced |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 94,538 | $10.2M | 0.01% | +93,645+10,486.6% | Added |
| WCM Investment Management, LLC | 93,427 | $9.81M | 0.02% | −3,940−4.0% | Reduced |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 87,752 | $9.45M | 0.02% | +44,756+104.1% | Added |
| Rhenman & Partners Asset Management AB | 84,000 | $9.04M | 1.12% | −126,000−60.0% | Reduced |
| Adage Capital Partners GP, L.L.C. | 81,878 | $8.81M | 0.01% | −168,122−67.2% | Reduced |
| Assetmark, Inc | 76,306 | $8.22M | 0.02% | +76,237+110,488.4% | Added |
| New York State Common Retirement Fund | 76,257 | $8.21M | 0.01% | −3,353−4.2% | Reduced |
| Victory Capital Management Inc | 75,985 | $8.18M | 0.01% | −4,117−5.1% | Reduced |
| California Public Employees Retirement System | 68,654 | $7.39M | 0.00% | −3,686−5.1% | Reduced |
| Sit Investment Associates Inc | 68,505 | $7.38M | 0.15% | +1,535+2.3% | Added |
| California State Teachers Retirement System | 66,434 | $7.15M | 0.01% | +11,871+21.8% | Added |
| Two Sigma Investments, LP | 63,430 | $6.83M | 0.01% | −35,221−35.7% | Reduced |
| Trexquant Investment LP | 62,381 | $6.72M | 0.05% | +62,381 | New |
| Citigroup Inc | 61,503 | $6.62M | 0.00% | +16,880+37.8% | Added |
| Eversept Partners, LP | 60,214 | $6.48M | 0.43% | −87,257−59.2% | Reduced |
| Prudential Financial Inc | 58,557 | $6.30M | 0.01% | +5,000+9.3% | Added |
| CI Private Wealth, LLC | 56,940 | $6.13M | 0.01% | +25,962+83.8% | Added |
| Allianz Asset Management GmbH | 54,853 | $5.91M | 0.01% | −1,143−2.0% | Reduced |
| Algert Global LLC | 54,201 | $5.84M | 0.09% | −101,345−65.2% | Reduced |
| Baird Financial Group, Inc. | 52,801 | $5.68M | 0.01% | −2,633−4.7% | Reduced |
| Vanguard Asset Management, Ltd | 52,761 | $5.68M | 0.00% | +52,761 | New |
| EFG International AG | 52,263 | $5.63M | 0.12% | −3,077−5.6% | Reduced |
| Deutsche Bank AG | 52,096 | $5.61M | 0.00% | +5,365+11.5% | Added |
| Envestnet Asset Management Inc | 50,237 | $5.41M | 0.00% | −1,596−3.1% | Reduced |
| Great West Life Assurance Co | 47,913 | $5.16M | 0.01% | −2,188−4.4% | Reduced |
| Engineers Gate Manager LP | 46,923 | $5.05M | 0.06% | +46,923 | New |
| New York State Teachers Retirement System | 46,372 | $4.99M | 0.01% | −1,871−3.9% | Reduced |
| DnB Asset Management AS | 46,367 | $4.99M | 0.02% | −35,953−43.7% | Reduced |