GKOS
Glaukos Corporation · Healthcare · Medical - Devices
Momentum inputs (comparable managers):
holder breadth -5.9% ·
share flow +6.8% ·
net new positions -6.2%
— formula
Concentrated accumulation — rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2024
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 123 | +9 | 42.81M | $5.94B | +15 | −7 |
| Q1 2026 | 118 | -1 | 46.55M | $5.02B | +6 | −8 |
| Q4 2025 | 118 | 0 | 48.22M | $5.44B | +2 | −1 |
| Q3 2025 | 22 | +5 | 29.69M | $2.42B | +5 | −1 |
| Q2 2025 | 15 | -2 | 32.65M | $3.37B | +1 | −3 |
| Q1 2025 | 14 | -2 | 8.81M | $867.57M | +1 | −3 |
| Q4 2024 | 16 | -1 | 9.74M | $1.46B | — | −1 |
| Q3 2024 | 16 | 0 | 7.06M | $919.99M | +1 | −1 |
| Q2 2024 | 16 | — | 6.75M | $798.69M | — | — |
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | Wellington Management ✦ | 2.16M | -1.1% | $323.80M | 0.1% | ▼ Trim | 3 | SEC ↗ ×5 |
| 2 | State Street Global Advisors ✦ (passive) | 2.06M | — | $309.39M | 0.0% | n/c | 1 | SEC ↗ |
| 3 | PRIMECAP Management ✦ | 1.21M | -2.5% | $182.08M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 4 | Geode Capital Management ✦ (passive) | 1.20M | +2.1% | $179.56M | 0.0% | ▲ Add | 3 | SEC ↗ ×2 |
| 5 | Citadel Advisors ✦ | 1.19M | +231.8% | $178.84M | 0.2% | ▲ Add | 3 | SEC ↗ ×2 |
| 6 | Norges Bank ✦ (passive) | 563.49K | +5.9% | $84.49M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 7 | Capital World Investors ✦ | 550.32K | 0.0% | $82.52M | 0.0% | Held | 3 | SEC ↗ |
| 8 | Millennium Management ✦ | 393.22K | +62.3% | $58.96M | 0.1% | ▲ Add | 3 | SEC ↗ |
| 9 | Point72 Asset Management ✦ | 280.31K | -26.9% | $42.03M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 10 | Renaissance Technologies ✦ | 49.60K | +30.6% | $7.44M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 11 | T. Rowe Price ✦ | 35.18K | +13.7% | $5.28M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 12 | Adage Capital Partners ✦ | 23.40K | -86.5% | $3.51M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 13 | AQR Capital Management ✦ | 7.59K | +16.2% | $1.14M | 0.0% | ▲ Add | 3 | SEC ↗ ×3 |
| 14 | Bridgewater Associates ✦ | 5.82K | -30.5% | $872,651 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 15 | GAMCO Investors ✦ | 5.21K | -1.2% | $781,037 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 16 | D. E. Shaw & Co. ✦ | 2.70K | +73.1% | $404,988 | 0.0% | ▲ Add | 3 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| No new tracked buyers this quarter. |
Exited
| Marshall Wace | $16.78M | was 0.0% |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 333 holders, 57.55M shares, $6.09B reported. This is a different, older period than the tracked-universe figures above and the two are never mixed.
What else this security's tracked holders most often hold — shared-ownership counts, not fundamental relationships.
Open-market purchases (P)
No open-market insider purchases in our coverage window.
Open-market sales (S)
Officer · 888 sh · $145,570
Officer · 312 sh · $51,667
Officer · 327 sh · $53,883
Officer · 167 sh · $25,334
Officer · 1.08K sh · $167,735
Officer · 229 sh · $35,321
Officer · 136 sh · $20,769
Officer · 103 sh · $16,810
Officer · 345 sh · $56,787
Officer · 191 sh · $31,744
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology