| 4 | PRIMECAP MANAGEMENT CO/CA/ | 3.0M | $425.0M | -9.8% | 5.155% | 0.25% |
| 5 | VANGUARD CAPITAL MANAGEMENT LLC | 2.6M | $356.5M | +1.7% | 4.325% | 0.01% |
| 6 | STATE STREET CORP | 2.3M | $323.7M | +6.1% | 3.926% | 0.00% |
| 7 | MILLENNIUM MANAGEMENT LLC | 1.6M | $225.2M | +30.6% | 2.731% | 0.08% |
| 8 | Holocene Advisors, LP | 1.5M | $211.7M | +9.5% | 2.568% | 0.48% |
| 9 | GEODE CAPITAL MANAGEMENT, LLC | 1.5M | $204.6M | +7.9% | 2.481% | 0.01% |
| 10 | CITADEL ADVISORS LLC | 1.5M | $203.9M | -0.8% | 2.473% | 0.01% |
| 11 | AMERIPRISE FINANCIAL INC | 1.3M | $183.8M | -18.4% | 2.229% | 0.04% |
| 12 | Capital World Investors | 1.0M | $142.0M | +2.7% | 1.722% | 0.02% |
| 13 | ALLIANCEBERNSTEIN L.P. | 1.3M | $135.1M | -10.2% | 2.127% | 0.04% |
| 14 | GOLDMAN SACHS GROUP INC | 897K | $125.4M | -34.8% | 1.521% | 0.01% |
| 15 | CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 753K | $105.2M | +5.3% | 1.276% | 0.01% |
| 16 | Invesco Ltd. | 707K | $98.8M | -22.7% | 1.198% | 0.01% |
| 17 | WILLIAM BLAIR INVESTMENT MANAGEMENT, LLC | 662K | $92.5M | -38.4% | 1.122% | 0.28% |
| 18 | DRIEHAUS CAPITAL MANAGEMENT LLC | 651K | $90.9M | +33.3% | 1.103% | 0.53% |
| 19 | NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | 647K | $90.5M | +5.8% | 1.098% | 0.14% |
| 20 | NORTHERN TRUST CORP | 612K | $85.6M | +6.3% | 1.038% | 0.01% |
| 21 | BRAIDWELL LP | 592K | $82.7M | -22.5% | 1.004% | 3.06% |
| 22 | MORGAN STANLEY | 590K | $82.4M | -13.1% | 1.000% | 0.00% |
| 23 | BANK OF AMERICA CORP /DE/ | 587K | $82.1M | -10.7% | 0.996% | 0.01% |
| 24 | UBS Group AG | 578K | $80.8M | +49.7% | 0.980% | 0.01% |
| 25 | JANE STREET GROUP, LLC | 570K | $79.7M | +3.2% | 0.966% | 0.01% |
denotes a marquee investor (Buffett, Burry, ARK, Tiger Global, Pershing Square, Baupost and other widely-followed managers). “% of Fund” shows how much of that investor’s total 13F portfolio is invested in GKOS — a direct measure of their conviction.
| 100.06% |
| +2.49 pp |
| $5.49B |
| 30% |
| Q4 2024 | 314 | +1.6% | 97.57% | 1.18 pp | $7.82B | +18% |
| Q3 2024 | 309 | — | 98.75% | — | $6.64B | — |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Δ columns compare to the immediately prior filed quarter.
62 institutions opened new positions in GKOS during Q2 2026, while 39 fully exited. 258 added to existing positions and 38 trimmed.
GKOS institutional ownership rose by 3.92 percentage points quarter-over-quarter, with a net change of +27 holders.
The top 10 institutions account for 53.1% of all reported 13F value in GKOS, and the top 25 account for 71.8%.
All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.
Glaukos Corporation (GKOS) Institutional Ownership