GKOS Glaukos Corporation
Glaukos Corporation (GKOS) Institutional Ownership
What the institutions did with GKOS last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 9.5M | 15.7% |
| Jupiter Topco LLC | 4.9M | 8.0% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 3.3M | 5.5% |
| PRIMECAP MANAGEMENT CO/CA/ | 3.0M | 5.0% |
| VANGUARD CAPITAL MANAGEMENT LLC | 2.6M | 4.2% |
| STATE STREET CORP | 2.3M | 3.8% |
| MILLENNIUM MANAGEMENT LLC | 1.6M | 2.6% |
| Holocene Advisors, LP | 1.5M | 2.5% |
| GEODE CAPITAL MANAGEMENT, LLC | 1.5M | 2.4% |
| CITADEL ADVISORS LLC | 1.4M | 2.3% |
| AMERIPRISE FINANCIAL INC | 1.3M | 2.2% |
| ALLIANCEBERNSTEIN L.P. | 1.3M | 2.1% |
| Capital World Investors | 1.0M | 1.7% |
| GOLDMAN SACHS GROUP INC | 897.0K | 1.5% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 752.6K | 1.2% |
| Invesco Ltd. | 706.9K | 1.2% |
| PRICE T ROWE ASSOCIATES INC /MD/ | 679.6K | 1.1% |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 661.7K | 1.1% |
| Driehaus Capital Management LLC | 650.6K | 1.1% |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 647.4K | 1.1% |
| NORTHERN TRUST CORP | 612.5K | 1.0% |
| BRAIDWELL LP | 591.9K | 1.0% |
| MORGAN STANLEY | 589.8K | 1.0% |
| BANK OF AMERICA CORP /DE/ | 587.3K | 1.0% |
| UBS Group AG | 578.3K | 1.0% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| FULLER & THALER ASSET MANAGEMENT, INC. | New | 0 | 529.9K | +529.9K |
| Balyasny Asset Management L.P. | New | 0 | 491.6K | +491.6K |
| GOLDMAN SACHS GROUP INC | Reduced | 1.4M | 897.0K | -477.9K |
| BlackRock, Inc. | Increased | 9.1M | 9.5M | +450.0K |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | New | 0 | 446.6K | +446.6K |
| VAUGHAN NELSON INVESTMENT MANAGEMENT, L.P. | New | 0 | 416.2K | +416.2K |
| WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | Reduced | 1.1M | 661.7K | -412.1K |
| MILLENNIUM MANAGEMENT LLC | Increased | 1.2M | 1.6M | +407.3K |
| Capital International Investors | Sold Out | 373.3K | 0 | -373.3K |
| PRICE T ROWE ASSOCIATES INC /MD/ | Increased | 336.4K | 679.6K | +343.2K |
| PRIMECAP MANAGEMENT CO/CA/ | Reduced | 3.4M | 3.0M | -329.9K |
| LORD, ABBETT & CO. LLC | Increased | 120.2K | 420.5K | +300.3K |
| Artisan Partners Limited Partnership | Reduced | 607.5K | 309.3K | -298.2K |
| AMERIPRISE FINANCIAL INC | Reduced | 1.6M | 1.3M | -295.7K |
| MARSHALL WACE, LLP | Increased | 34.1K | 314.8K | +280.7K |
| WELLINGTON MANAGEMENT GROUP LLP | Increased | 149.2K | 428.2K | +279.1K |
| Anomaly Capital Management, LP | New | 0 | 276.0K | +276.0K |
| Longaeva Partners L.P. | New | 0 | 236.2K | +236.2K |
| TORONTO DOMINION BANK | Increased | 36.1K | 268.2K | +232.0K |
| PFM Health Sciences, LP | Sold Out | 215.7K | 0 | -215.7K |
| Invesco Ltd. | Reduced | 914.2K | 706.9K | -207.3K |
| Assenagon Asset Management S.A. | Increased | 10.5K | 217.5K | +206.9K |
| D. E. Shaw & Co., Inc. | Reduced | 251.2K | 57.2K | -194.0K |
| UBS Group AG | Increased | 386.4K | 578.3K | +191.9K |
| ExodusPoint Capital Management, LP | Sold Out | 179.7K | 0 | -179.7K |
| BRAIDWELL LP | Reduced | 763.5K | 591.9K | -171.6K |
| Driehaus Capital Management LLC | Increased | 487.9K | 650.6K | +162.7K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | New | 0 | 154.9K | +154.9K |
| NEUBERGER BERMAN GROUP LLC | Increased | 147.9K | 300.8K | +152.9K |
| JPMORGAN CHASE & CO | Reduced | 323.8K | 172.2K | -151.6K |
| RIVERBRIDGE PARTNERS LLC | Reduced | 433.2K | 282.1K | -151.1K |
| TimesSquare Capital Management, LLC | New | 0 | 145.2K | +145.2K |
| Clearbridge Investments, LLC | Increased | 286.1K | 431.1K | +145.0K |
| ALLIANCEBERNSTEIN L.P. | Reduced | 1.4M | 1.3M | -142.9K |
| STATE STREET CORP | Increased | 2.2M | 2.3M | +133.0K |
| Holocene Advisors, LP | Increased | 1.4M | 1.5M | +131.2K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 3.2M | 3.3M | +113.5K |
| DIMENSIONAL FUND ADVISORS LP | Reduced | 199.1K | 87.3K | -111.8K |
| Qube Research & Technologies Ltd | Sold Out | 108.9K | 0 | -108.9K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 1.4M | 1.5M | +107.0K |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | Increased | 94.5K | 195.7K | +101.2K |
| Susquehanna Portfolio Strategies, LLC | Increased | 5.4K | 102.5K | +97.1K |
| Squarepoint Ops LLC | Reduced | 108.0K | 14.2K | -93.9K |
| MORGAN STANLEY | Reduced | 678.8K | 589.8K | -89.0K |
| Cinctive Capital Management LP | New | 0 | 85.1K | +85.1K |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | Sold Out | 81.9K | 0 | -81.9K |
| PRUDENTIAL FINANCIAL INC | Increased | 58.6K | 139.5K | +81.0K |
| ROYAL BANK OF CANADA | Reduced | 204.2K | 125.7K | -78.5K |
| PRINCIPAL FINANCIAL GROUP INC | Increased | 280.7K | 358.8K | +78.0K |
| Nuveen, LLC | Reduced | 398.3K | 322.6K | -75.7K |
| FMR LLC | Increased | 303.3K | 377.5K | +74.2K |
| NATIXIS ADVISORS, LLC | Increased | 21.6K | 91.9K | +70.3K |
| BANK OF AMERICA CORP /DE/ | Reduced | 657.4K | 587.3K | -70.1K |
| BESSEMER GROUP INC | Increased | 3.6K | 72.1K | +68.6K |
| Defilade Capital Management, L.P. | New | 0 | 66.5K | +66.5K |
| AustralianSuper Pty Ltd | Reduced | 131.5K | 65.3K | -66.2K |
| Trexquant Investment LP | Sold Out | 62.4K | 0 | -62.4K |
| BROWN CAPITAL MANAGEMENT LLC | Reduced | 230.0K | 167.9K | -62.1K |
| CITADEL ADVISORS LLC | Reduced | 1.4M | 1.4M | -56.9K |
| BRAUN STACEY ASSOCIATES INC | New | 0 | 55.0K | +55.0K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.