GLAUKOS CORP (GKOS) Institutional Ownership Changes & 13F Activity
GLAUKOS CORP (GKOS). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include California State Teachers Retirement System, Ameriprise Financial Inc, Citadel Advisors Llc, Sixth Street Partners Management Company, L.P., and Balyasny Asset Management L.P..
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Manufacturers Life Insurance Company, The | Buy | +33,255 | +125.0% | 59,862 | $8.37M | Q2 2026 | Sep 09, 2026 |
| Integrated Wealth Concepts Llc | Buy | +3,622 | — | 3,622 | $506.08K | Q2 2026 | Sep 09, 2026 |
| Parkside Financial Bank & Trust | Buy | +367 | +20.5% | 2,153 | $300.90K | Q2 2026 | Sep 04, 2026 |
| Citadel Advisors Llc | Buy | +1,333,108 | +92.1% | 2,780,034 | $388.54M | Q2 2026 | Sep 02, 2026 |
| Allianz Asset Management Gmbh | Buy | +46,330 | +84.5% | 101,183 | $12.38M | Q2 2026 | Sep 02, 2026 |
| Cornerstone Financial Management Llc | Buy | +8 | +57.1% | 22 | $3.07K | Q2 2026 | Aug 28, 2026 |
| Corient Private Wealth Llc | Buy | +114,202 | +200.6% | 171,142 | $23.92M | Q2 2026 | Aug 27, 2026 |
| California State Teachers Retirement System | Buy | +9,022,439 | +13581.1% | 9,088,873 | $9.09M | Q2 2026 | Aug 24, 2026 |
| Assenagon Asset Management S.A. | Buy | +206,941 | +1965.1% | 217,472 | $30.39M | Q2 2026 | Aug 21, 2026 |
| Mercer Global Advisors Inc | Buy | +3,710 | — | 3,710 | $518.51K | Q2 2026 | Aug 19, 2026 |
| Archer Investment Corp | Buy | +1,594 | +100.0% | 3,188 | $445.55K | Q2 2026 | Aug 19, 2026 |
| Fulcrum Asset Management Llp | Buy | +96 | — | 96 | $13.65K | Q2 2026 | Aug 18, 2026 |
| Jefferies Financial Group Inc. | Buy | +7,856 | — | 7,856 | $1.10M | Q2 2026 | Aug 17, 2026 |
| Ameriprise Financial Inc | Sell | -1,906,491 | -59.2% | 1,315,057 | $183.79M | Q2 2026 | Aug 14, 2026 |
| Sixth Street Partners Management Company, L.P. | Buy | +752,642 | — | 752,642 | $105.19M | Q2 2026 | Aug 14, 2026 |
| Balyasny Asset Management L.P. | Buy | +491,636 | — | 491,636 | $68.71M | Q2 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Sell | -477,937 | -34.8% | 897,021 | $125.37M | Q2 2026 | Aug 14, 2026 |
| Summit Partners Public Asset Management, Llc | Buy | +446,550 | — | 446,550 | $62.41M | Q2 2026 | Aug 14, 2026 |
| Millennium Management Llc | Buy | +407,320 | +34.7% | 1,581,016 | $220.96M | Q2 2026 | Aug 14, 2026 |
| Price T Rowe Associates Inc | Buy | +343,207 | +102.0% | 679,632 | $94.99M | Q2 2026 | Aug 14, 2026 |
| Primecap Management Co/Ca/ | Sell | -329,923 | -9.8% | 3,040,705 | $424.97M | Q2 2026 | Aug 14, 2026 |
| Lord, Abbett & Co. Llc | Buy | +300,252 | +249.8% | 420,466 | $58.76M | Q2 2026 | Aug 14, 2026 |
| Wellington Management Group Llp | Buy | +279,065 | +187.1% | 428,215 | $59.85M | Q2 2026 | Aug 14, 2026 |
| Anomaly Capital Management, Lp | Buy | +275,995 | — | 275,995 | $38.57M | Q2 2026 | Aug 14, 2026 |
| Longaeva Partners L.P. | Buy | +236,192 | — | 236,192 | $33.01M | Q2 2026 | Aug 14, 2026 |
| Toronto Dominion Bank | Buy | +232,026 | +642.3% | 268,152 | $37.48M | Q2 2026 | Aug 14, 2026 |
| Invesco Ltd. | Sell | -207,311 | -22.7% | 706,877 | $98.79M | Q2 2026 | Aug 14, 2026 |
| D. E. Shaw & Co., Inc. | Sell | -193,992 | -77.2% | 57,184 | $7.99M | Q2 2026 | Aug 14, 2026 |
| Braidwell Lp | Sell | -171,578 | -22.5% | 591,927 | $82.73M | Q2 2026 | Aug 14, 2026 |
| Driehaus Capital Management Llc | Buy | +162,659 | +33.3% | 650,571 | $90.92M | Q2 2026 | Aug 14, 2026 |
Frequently asked questions about GKOS activity
Which institutional owners are buying GKOS?
Institutional owners buying GKOS include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in GKOS activity?
"Buy" means an investor increased their reported position in GKOS compared to the prior reporting period. This reflects growing exposure to GLAUKOS CORP (GKOS) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in GKOS increasing?
Institutional interest in GKOS can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
Related GKOS Institutional Insights
- GKOS Overview
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- Institutional Portfolio Overlap & Shared Holdings
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- GKOS Insider Trading & SEC Form 4 Activity
- GKOS Articles
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