Ranked by reported Q2 2026 13F market value
Share of total reported institutional value in GKOS held by the largest 10 / 25 filers.
| # | Institution | Shares Held | Market Value | QoQ Change | Ownership % | % of Fund |
|---|---|---|---|---|---|---|
| 1 | BlackRock, Inc. | 9.5M | $1.33B | +5.0% | 16.174% | 0.02% |
| 2 | Jupiter Topco LLC | 4.9M | $679.6M | β | 8.244% | 0.28% |
| 3 | VANGUARD PORTFOLIO MANAGEMENT LLC | 3.3M | $464.3M | +3.5% | 5.632% | 0.02% |
| 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). β% of Fundβ shows how much of that investorβs total 13F portfolio is invested in GKOS β a direct measure of their conviction.
Filings activity in GKOS during Q2 2026, grouped by how each filer changed its position.
8 quarters of 13F filings Β· Ξ columns show change vs prior quarter
| Quarter | Inst. Holders | Ξ Holders | Ownership % | Ξ Ownership | Total 13F Value | Ξ Value |
|---|---|---|---|---|---|---|
| Q2 2026 | 367 | +7.9% | 104.68% | +3.92 pp | $8.34B | +34% |
| Q1 2026 | 340 | +3.0% | 100.76% | 0.05 pp | $6.24B | 3.4% |
| Q4 2025 | 330 | +7.1% | 100.81% | +2.55 pp | $6.46B | +43% |
| Q3 2025 | 308 | +5.1% | 98.26% | 7.73 pp | $4.52B | 27% |
| Q2 2025 | 293 | 5.2% | 105.99% | +5.93 pp | $6.16B | +12% |
| Q1 2025 | 309 | 1.6% | 100.06% | +2.49 pp | $5.49B | 30% |
| Q4 2024 | 314 | +1.6% | 97.57% | 1.18 pp | $7.82B | +18% |
| Q3 2024 | 309 | β | 98.75% | β | $6.64B | β |
Source: SEC 13F institutional filings. Ownership % requires market cap data and will show once linked. Ξ columns compare to the immediately prior filed quarter.
Quick answers to the most common questions about buying GKOS stock.
Based on Q2 2026 13F filings, institutional ownership of Glaukos Corporation stands at 104.7%, held across 367 reporting institutions.
BlackRock, Inc. is the largest reported institutional holder of GKOS, with approximately 9,540,056 shares worth $1.33B as of Q2 2026.
Yes β 3 widely-followed marquee investors appear among the top 25 institutional holders of GKOS, including MILLENNIUM MANAGEMENT LLC, CITADEL ADVISORS LLC, JANE STREET GROUP, LLC.
Our composite Smart Money Score for GKOS is 78 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.
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