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Of the 12 tracked institutions holding GKOS, 6 have a 3-year clone track record — 6 of them beat the S&P. Average holder's clone alpha: +6.2pt. It's a gauge of who owns the name, not just how many.
Among the 12 tracked institutional investors we monitor, GKOS (GLAUKOS CORP) is held with a combined value of $2.30B across 21,079,037 shares. The largest holder is BlackRock, Inc. with a position worth $978.63M (0.02% of their portfolio). RENAISSANCE TECHNOLOGIES LLC opened a new position in the most recent quarter. 4 funds increased their holdings. 7 funds reduced their position.
Total Institutional Value
$2.30B
Total Shares Held
21,079,037
Institutional Holders
12
% of Shares Outstanding
35.9%
of 58.73M shares · SEC 2026-04-28
Days to Cover
6.3+5.7%
4.70M shares short · FINRA 2026-07-15
Tracked 13F institutions hold 35.9% of GKOS's shares outstanding. This is a floor: 13F filings arrive on a ~45-day lag and we track only a subset of institutional filers, so true institutional ownership is higher. Shares-outstanding is the latest SEC cover-page figure (as of 2026-04-28), not a live float.
Ranked by estimated dollars moved (share change × implied price). 13F data lags up to 45 days.
| # | Fund | Value↓ | Portfolio % | Change |
|---|---|---|---|---|
| 1 | BlackRock, Inc. | $978.63M | 0.02% | -0.8% |
| 2 | VANGUARD GROUP INC | $679.77M | 0.01% | -0.4% |
| 3 | STATE STREET CORP | $234.98M | 0.01% | +2.8% |
| 4 | CITADEL ADVISORS LLC | $155.78M | 0.11% | +5267.7% |
| 5 | MILLENNIUM MANAGEMENT LLC | $132.82M | 0.06% | -23.4% |
| 6 | PRICE T ROWE ASSOCIATES INC /MD/ | $36.22M | 0.00% | +175.4% |
| 7 | FMR LLC | $32.65M | 0.00% | +2907.7% |
| 8 | WELLINGTON MANAGEMENT GROUP LLP | $16.06M | 0.00% | -69.4% |
| 9 | RENAISSANCE TECHNOLOGIES LLC | $12.80M | 0.02% | New |
| 10 | Point72 Asset Management, L.P. | $10.91M | 0.02% | -37.3% |
As of the latest SEC 13F filings, BlackRock, Inc. is the largest institutional holder of GKOS with a position worth $978.63M, representing 0.02% of their portfolio. In total, 12 institutional investors hold GKOS with a combined value of $2.30B.
In the most recent quarter, 1 fund opened a new position in GKOS. Additionally, 4 increased their holdings and 7 reduced their positions.
Institutional investors hold $2.30B worth of GKOS stock across 12 positions. The largest institutional holder is BlackRock, Inc. with $978.63M in holdings.
A 13F filing is a quarterly report required by the SEC from institutional investment managers with over $100 million in assets. It discloses their holdings in U.S. equities. For GKOS, these filings reveal which major funds are accumulating or reducing positions, providing insights into institutional sentiment.
Get notified when hedge funds change their GKOS positions.
Alpha = the manager's 3-year clone return minus the S&P 500. A skilled roster is a stronger tell than a crowded one — though even skilled managers' edge doesn't reliably survive the 13F disclosure lag. Why →
Last Close
$153.58
2026-07-24
YTD
+38.7%
96% of 52-week range
