GlaukosGKOS
13F holders, Q1 2026 (March 31)336holders +4
42new positions
38sold out
7famous investors
$107.80avg. 13F price*
At the end of Q1 2026, 336 institutions reported holding Glaukos Corp. (GKOS) in their 13F filings, up 4 from Q4 2025. 42 opened new positions and 38 sold out. The largest holders were BlackRock, Inc. ($978.6M), Janus Henderson Group PLC ($575.8M) and Primecap Management Co. ($362.9M). 7 famous investors held it, including Ken Griffin (0.1% of Citadel Advisors's portfolio), Israel Englander (0.1% of Millennium Management's portfolio) and David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio).
- Company
- Glaukos Corp.
- CUSIP
- 377322102
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 42 | $248.9M |
| Exits | 38 | $95.0M |
All 13F filers, Q4 2025 → Q1 2026: 8,024,539 shares bought and 6,678,525 shares sold, net +1,346,014 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 336 holders
| BlackRock, Inc. | 0.02% | Reduce -0.8% | 9,090,029 | $978.6M |
| Janus Henderson Group PLC | 0.28% | Add +77.2% | 5,348,395 | $575.8M |
| Primecap Management Co. | 0.29% | Reduce -0.2% | 3,370,628 | $362.9M |
| Vanguard Portfolio Management LLC | 0.02% | — | 3,208,363 | $345.4M |
| Vanguard Capital Management LLC | 0.01% | — | 2,508,771 | $270.1M |
| State Street Corp. | 0.01% | Add +2.8% | 2,182,617 | $235.0M |
| Ameriprise Financial Inc. | 0.04% | Reduce -23.4% | 1,610,774 | $173.4M |
| Alliancebernstein L.P. | 0.05% | Reduce -15.0% | 1,397,556 | $157.8M |
| Citadel Advisors | 0.11% | Add +5267.7% | 1,446,926 | $155.8M |
| Holocene Advisors, LP | 0.36% | Add +6.5% | 1,383,715 | $149.0M |
| Goldman Sachs Group Inc. | 0.02% | Add +1.8% | 1,374,958 | $148.0M |
| Geode Capital Management, LLC | 0.01% | Add +3.0% | 1,356,453 | $146.1M |
| Millennium Management | 0.10% | Reduce -27.1% | 1,173,696 | $126.4M |
| William Blair Investment Management, LLC | 0.38% | Reduce -3.0% | 1,073,819 | $115.6M |
| Capital World Investors | 0.01% | Add +16.2% | 989,060 | $106.5M |
| Invesco Ltd. | 0.01% | Add +17.2% | 914,188 | $98.4M |
| Braidwell LP | 3.13% | Reduce -17.2% | 763,505 | $82.2M |
| Charles Schwab Investment Management Inc. | 0.01% | Add +0.1% | 714,389 | $76.9M |
| Morgan Stanley | 0.00% | Add +1.2% | 678,825 | $73.1M |
| Bank of America Corp. | 0.01% | Add +22.1% | 657,432 | $70.8M |
| Nomura Asset Management International Inc. | 0.11% | Reduce -9.1% | 612,063 | $65.9M |
| Artisan Partners Limited Partnership | 0.11% | Reduce -13.6% | 607,462 | $65.4M |
| Northern Trust Corp. | 0.01% | Reduce -1.9% | 576,209 | $62.0M |
| Driehaus Capital Management LLC | 0.39% | New | 487,912 | $52.5M |
| Jennison Associates LLC | 0.04% | New | 487,020 | $52.4M |
| Westfield Capital Management Co. LP | 0.22% | New | 482,219 | $51.9M |
| Riverbridge Partners LLC | 1.14% | Reduce -19.1% | 433,228 | $46.6M |
| Loomis Sayles & Co. L P | 0.06% | Reduce -5.9% | 421,240 | $45.4M |
| Allspring Global Investments Holdings, LLC | 0.07% | Add +10.8% | 393,831 | $44.4M |
| Nuveen, LLC | 0.01% | Reduce -1.9% | 398,329 | $42.9M |
| Vanguard Fiduciary Trust Co. | 0.01% | — | 396,719 | $42.7M |
| UBS Group AG | 0.01% | Reduce -55.8% | 386,400 | $41.6M |
| Capital International Investors | 0.01% | Reduce -27.0% | 373,343 | $40.2M |
| Bank of New York Mellon Corp | 0.01% | Reduce -3.6% | 343,173 | $36.9M |
| T. Rowe Price Associates Inc. | 0.00% | Add +175.4% | 336,425 | $36.2M |
| Champlain Investment Partners, LLC | 0.44% | Reduce -4.3% | 319,027 | $34.3M |
| JPMorgan Chase & Co. | 0.00% | Reduce -41.8% | 323,819 | $34.0M |
| FMR LLC | 0.00% | Add +2907.7% | 303,266 | $32.6M |
| Clearbridge Investments, LLC | 0.03% | Add +155.3% | 286,051 | $30.8M |
| Principal Financial Group Inc. | 0.02% | Add +2.3% | 280,737 | $30.2M |
| D. E. Shaw & Co. | 0.02% | Reduce -55.0% | 251,176 | $27.0M |
| Brown Capital Management LLC | 3.52% | Reduce -29.6% | 230,028 | $24.8M |
| PFM Health Sciences, LP | 2.49% | Add +7.0% | 215,685 | $23.2M |
| C WorldWide Group Holding A/S | 0.48% | No change | 207,212 | $22.3M |
| Public Sector Pension Investment Board | 0.07% | Add +3.4% | 205,484 | $22.1M |
| Royal Bank of Canada | 0.00% | Add +6.4% | 204,153 | $22.0M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -3.1% | 199,084 | $21.4M |
| ExodusPoint Capital Management, LP | 0.19% | New | 179,728 | $19.3M |
| Integral Health Asset Management, LLC | 1.00% | Reduce -46.1% | 175,000 | $18.8M |
| Sei Investments Co. | 0.02% | Reduce -11.1% | 161,680 | $17.4M |
| Legal & General Group Plc | 0.00% | Reduce -10.7% | 160,542 | $17.3M |
| Rhumbline Advisers | 0.01% | Add +1.8% | 154,176 | $16.6M |
| Gilder Gagnon Howe & Co. LLC | 0.20% | Reduce -1.0% | 152,897 | $16.5M |
| Eventide Asset Management, LLC | 0.27% | Reduce -48.1% | 150,036 | $16.2M |
| Wellington Management Group LLP | 0.00% | Reduce -69.4% | 149,150 | $16.1M |
| Neuberger Berman Group LLC | 0.01% | Add +175.0% | 147,894 | $15.9M |
| Bellevue Group AG | 0.37% | Reduce -44.4% | 145,703 | $15.7M |
| Keybank National Association | 0.06% | Add +1.9% | 145,270 | $15.6M |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Add +0.4% | 143,774 | $15.5M |
| AustralianSuper Pty Ltd | 0.07% | Reduce -70.8% | 131,535 | $14.2M |
| Silvercrest Asset Management Group LLC | 0.10% | Add +23.0% | 128,294 | $13.8M |
| Segall Bryant & Hamill, LLC | 0.19% | Reduce -4.9% | 124,951 | $13.5M |
| Lord, Abbett & Co. LLC | 0.04% | New | 120,214 | $12.9M |
| Renaissance Technologies | 0.02% | New | 118,892 | $12.8M |
| Fred Alger Management, LLC | 0.05% | Reduce -65.0% | 113,943 | $12.3M |
| Swiss National Bank | 0.01% | Add +0.4% | 113,600 | $12.2M |
| Granite Investment Partners, LLC | 0.74% | Reduce -6.3% | 111,872 | $12.0M |
| Qube Research & Technologies Ltd | 0.02% | Reduce -42.3% | 108,863 | $11.7M |
| Squarepoint Ops LLC | 0.03% | New | 108,049 | $11.6M |
| Point72 Asset Management | 0.02% | Reduce -37.3% | 101,340 | $10.9M |
| Raymond James Financial Inc. | 0.00% | Reduce -0.6% | 98,226 | $10.4M |
| Osterweis Capital Management Inc. | 0.63% | Reduce -6.6% | 94,863 | $10.2M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | 0.01% | Add +10486.6% | 94,538 | $10.2M |
| WCM Investment Management, LLC | 0.02% | Reduce -4.0% | 93,427 | $9.8M |
| Universal- Beteiligungs- und Servicegesellschaft mbH | 0.02% | Add +104.1% | 87,752 | $9.4M |
| Rhenman & Partners Asset Management AB | 1.12% | Reduce -60.0% | 84,000 | $9.0M |
| Adage Capital Partners Gp, L.L.C. | 0.01% | Reduce -67.3% | 81,878 | $8.8M |
| Assetmark, Inc. | 0.02% | Add +110488.4% | 76,306 | $8.2M |
| New York State Common Retirement Fund | 0.01% | Reduce -4.2% | 76,257 | $8.2M |
| Victory Capital Management Inc. | 0.01% | Reduce -5.1% | 75,985 | $8.2M |
| California Public Employees Retirement System | 0.00% | Reduce -5.1% | 68,654 | $7.4M |
| Sit Investment Associates Inc. | 0.15% | Add +2.3% | 68,505 | $7.4M |
| California State Teachers Retirement System | 0.01% | Add +21.8% | 66,434 | $7.2M |
| Two Sigma Investments, LP | 0.01% | Reduce -35.7% | 63,430 | $6.8M |
| Trexquant Investment LP | 0.05% | New | 62,381 | $6.7M |
| Citigroup Inc. | 0.00% | Add +37.8% | 61,503 | $6.6M |
| Eversept Partners, LP | 0.43% | Reduce -59.2% | 60,214 | $6.5M |
| Prudential Financial Inc. | 0.01% | Add +9.3% | 58,557 | $6.3M |
| Corient Private Wealth LP | 0.01% | Add +83.8% | 56,940 | $6.1M |
| Allianz Asset Management GmbH | 0.01% | Reduce -2.0% | 54,853 | $5.9M |
| Algert Global LLC | 0.09% | Reduce -65.2% | 54,201 | $5.8M |
| Baird Financial Group, Inc. | 0.01% | Reduce -4.8% | 52,801 | $5.7M |
| VANGUARD ASSET MANAGEMENT, Ltd | 0.00% | — | 52,761 | $5.7M |
| EFG International AG | 0.12% | Reduce -5.6% | 52,263 | $5.6M |
| Deutsche Bank AG | 0.00% | Add +11.5% | 52,096 | $5.6M |
| Envestnet Asset Management Inc. | 0.00% | Reduce -3.1% | 50,237 | $5.4M |
| CANADA LIFE ASSURANCE Co | 0.01% | Reduce -4.4% | 47,913 | $5.2M |
| Engineers Gate Manager LP | 0.06% | New | 46,923 | $5.1M |
| New York State Teachers Retirement System | 0.01% | Reduce -3.9% | 46,372 | $5.0M |
| DNB Asset Management AS | 0.02% | Reduce -43.7% | 46,367 | $5.0M |
"% of holder's portfolio" is GKOS's weight in each manager's 13F, not the share of Glaukos Corp. the manager owns.