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.
Sign in or subscribeLargest 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 |
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.