Security record · archived quarter
GKOS
Glaukos Corporation · Healthcare · Medical - Devices
118Tracked holders
-1Δ holders
46.55MShares held
$5.02BReported value
+6New positions
−8Exits
Momentum inputs (comparable managers):
holder breadth -0.8% ·
share flow +5.4% ·
net new positions -1.7%
— formula
Concentrated accumulation — rising shares among fewer holders
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q1 2026
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 125 | +9 | 42.85M | $5.95B | +15 | −5 |
| 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 | — | — |
Who holds it · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 9.09M | -0.8% | $978.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 9.09M | -0.8% | $978.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 9.09M | -0.8% | $978.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 9.09M | -0.8% | $978.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 9.09M | -0.8% | $978.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 9.09M | -0.8% | $978.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 9.09M | -0.8% | $978.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 9.09M | -0.8% | $978.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 9.09M | -0.8% | $978.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 9.09M | -0.8% | $978.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 9.09M | -0.8% | $978.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 12 | BlackRock ✦ (passive) | 9.09M | -0.8% | $978.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 13 | BlackRock ✦ (passive) | 9.09M | -0.8% | $978.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 14 | BlackRock ✦ (passive) | 9.09M | -0.8% | $978.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 15 | BlackRock ✦ (passive) | 9.09M | -0.8% | $978.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 16 | BlackRock ✦ (passive) | 9.09M | -0.8% | $978.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 17 | BlackRock ✦ (passive) | 9.09M | -0.8% | $978.63M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 18 | Janus Henderson Group Plc | 5.35M | +77.2% | $575.84M | 0.3% | ▲ Add | 2 | SEC ↗ |
| 19 | Janus Henderson Group Plc | 5.35M | +77.2% | $575.84M | 0.3% | ▲ Add | 2 | SEC ↗ |
| 20 | Janus Henderson Group Plc | 5.35M | +77.2% | $575.84M | 0.3% | ▲ Add | 2 | SEC ↗ |
| 21 | Janus Henderson Group Plc | 5.35M | +77.2% | $575.84M | 0.3% | ▲ Add | 2 | SEC ↗ |
| 22 | Janus Henderson Group Plc | 5.35M | +77.2% | $575.84M | 0.3% | ▲ Add | 2 | SEC ↗ |
| 23 | PRIMECAP Management ✦ | 3.37M | -0.2% | $362.88M | 0.3% | ▼ Trim | 8 | SEC ↗ |
| 24 | Vanguard Capital Management Llc | 2.51M | — | $270.09M | 0.0% | n/c | 1 | SEC ↗ |
| 25 | State Street Global Advisors ✦ (passive) | 2.18M | +2.8% | $234.98M | 0.0% | ▲ Add | 6 | SEC ↗ |
| 26 | Ameriprise Financial Inc | 1.61M | -23.4% | $173.42M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 27 | Ameriprise Financial Inc | 1.61M | -23.4% | $173.42M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 28 | Ameriprise Financial Inc | 1.61M | -23.4% | $173.42M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 29 | Ameriprise Financial Inc | 1.61M | -23.4% | $173.42M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 30 | Ameriprise Financial Inc | 1.61M | -23.4% | $173.42M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 31 | Ameriprise Financial Inc | 1.61M | -23.4% | $173.42M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 32 | Alliancebernstein L.P. | 1.40M | -15.0% | $157.80M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 33 | Citadel Advisors ✦ | 1.45M | +5267.7% | $155.78M | 0.1% | ▲ Add | 8 | SEC ↗ |
| 34 | Citadel Advisors ✦ | 1.45M | +5267.7% | $155.78M | 0.1% | ▲ Add | 8 | SEC ↗ |
| 35 | Holocene Advisors, LP | 1.38M | +6.5% | $148.97M | 0.4% | ▲ Add | 2 | SEC ↗ |
| 36 | Goldman Sachs Group ✦ | 1.37M | +1.8% | $148.03M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 37 | Goldman Sachs Group ✦ | 1.37M | +1.8% | $148.03M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 38 | Goldman Sachs Group ✦ | 1.37M | +1.8% | $148.03M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 39 | Goldman Sachs Group ✦ | 1.37M | +1.8% | $148.03M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 40 | Goldman Sachs Group ✦ | 1.37M | +1.8% | $148.03M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 41 | Geode Capital Management ✦ (passive) | 1.36M | +3.0% | $146.06M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 42 | Geode Capital Management ✦ (passive) | 1.36M | +3.0% | $146.06M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 43 | Millennium Management ✦ | 1.17M | -27.1% | $126.36M | 0.1% | ▼ Trim | 3 | SEC ↗ |
| 44 | Capital World Investors ✦ | 989.06K | +16.2% | $106.48M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 45 | Invesco Ltd. | 914.19K | +17.2% | $98.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 46 | Invesco Ltd. | 914.19K | +17.2% | $98.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 47 | Invesco Ltd. | 914.19K | +17.2% | $98.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 48 | Invesco Ltd. | 914.19K | +17.2% | $98.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 49 | Invesco Ltd. | 914.19K | +17.2% | $98.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 50 | Invesco Ltd. | 914.19K | +17.2% | $98.42M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 51 | Charles Schwab Investment… | 714.39K | +0.1% | $76.91M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 52 | Morgan Stanley ✦ | 678.83K | +1.2% | $73.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 53 | Morgan Stanley ✦ | 678.83K | +1.2% | $73.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 54 | Morgan Stanley ✦ | 678.83K | +1.2% | $73.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 55 | Morgan Stanley ✦ | 678.83K | +1.2% | $73.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 56 | Morgan Stanley ✦ | 678.83K | +1.2% | $73.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 57 | Morgan Stanley ✦ | 678.83K | +1.2% | $73.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 58 | Morgan Stanley ✦ | 678.83K | +1.2% | $73.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 59 | Morgan Stanley ✦ | 678.83K | +1.2% | $73.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 60 | Morgan Stanley ✦ | 678.83K | +1.2% | $73.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 61 | Morgan Stanley ✦ | 678.83K | +1.2% | $73.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 62 | Morgan Stanley ✦ | 678.83K | +1.2% | $73.08M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 63 | Bank Of America Corp /De/ | 657.43K | +22.1% | $70.78M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 64 | Bank Of America Corp /De/ | 657.43K | +22.1% | $70.78M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 65 | Bank Of America Corp /De/ | 657.43K | +22.1% | $70.78M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 66 | Bank Of America Corp /De/ | 657.43K | +22.1% | $70.78M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 67 | Bank Of America Corp /De/ | 657.43K | +22.1% | $70.78M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 68 | Bank Of America Corp /De/ | 657.43K | +22.1% | $70.78M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 69 | Nomura Asset Management… | 612.06K | -9.1% | $65.89M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 70 | Artisan Partners Limited Partnership | 607.46K | -13.6% | $65.40M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 71 | Northern Trust Corp | 576.21K | -1.9% | $62.03M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 72 | Northern Trust Corp | 576.21K | -1.9% | $62.03M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 73 | Northern Trust Corp | 576.21K | -1.9% | $62.03M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 74 | Northern Trust Corp | 576.21K | -1.9% | $62.03M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 75 | Northern Trust Corp | 576.21K | -1.9% | $62.03M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 76 | Northern Trust Corp | 576.21K | -1.9% | $62.03M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 77 | Northern Trust Corp | 576.21K | -1.9% | $62.03M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 78 | Jennison Associates Llc | 487.02K | New | $52.43M | 0.0% | New | 1 | SEC ↗ |
| 79 | Jennison Associates Llc | 487.02K | New | $52.43M | 0.0% | New | 1 | SEC ↗ |
| 80 | Loomis Sayles & Co L P | 421.24K | -5.9% | $45.35M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 81 | Loomis Sayles & Co L P | 421.24K | -5.9% | $45.35M | 0.1% | ▼ Trim | 2 | SEC ↗ |
| 82 | Allspring Global Investments… | 393.83K | +10.8% | $44.36M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 83 | Allspring Global Investments… | 393.83K | +10.8% | $44.36M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 84 | Allspring Global Investments… | 393.83K | +10.8% | $44.36M | 0.1% | ▲ Add | 2 | SEC ↗ |
| 85 | Nuveen, LLC | 398.33K | -1.9% | $42.88M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 86 | Nuveen, LLC | 398.33K | -1.9% | $42.88M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 87 | Nuveen, LLC | 398.33K | -1.9% | $42.88M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 88 | UBS Group AG | 386.40K | -55.8% | $41.60M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 89 | UBS Group AG | 386.40K | -55.8% | $41.60M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 90 | UBS Group AG | 386.40K | -55.8% | $41.60M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 91 | Capital International Investors | 373.34K | -27.0% | $40.19M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 92 | Bank of New York Mellon Corp | 343.17K | -3.6% | $36.95M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 93 | Bank of New York Mellon Corp | 343.17K | -3.6% | $36.95M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 94 | Bank of New York Mellon Corp | 343.17K | -3.6% | $36.95M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 95 | Bank of New York Mellon Corp | 343.17K | -3.6% | $36.95M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 96 | Bank of New York Mellon Corp | 343.17K | -3.6% | $36.95M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 97 | Bank of New York Mellon Corp | 343.17K | -3.6% | $36.95M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 98 | Bank of New York Mellon Corp | 343.17K | -3.6% | $36.95M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 99 | Bank of New York Mellon Corp | 343.17K | -3.6% | $36.95M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 100 | Bank of New York Mellon Corp | 343.17K | -3.6% | $36.95M | 0.0% | ▼ Trim | 2 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Jennison Associates Llc | $52.43M | 0.0% |
| Jennison Associates Llc | $52.43M | 0.0% |
Exited
| Norges Bank | $60.54M | was 0.0% |
| Balyasny Asset Management L.P. | $9.84M | was 0.0% |
| Connor, Clark & Lunn… | $3.40M | was 0.0% |
| Mariner, LLC | $673,008 | was 0.0% |
| Gotham Asset Management | $301,018 | was 0.0% |
| Focus Partners Wealth | $220,966 | was 0.0% |
| Mml Investors Services, Llc | $207,641 | was 0.0% |
| Danske Bank A/S | $33,873 | 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.
Frequently co-owned
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)
Aug 19
Kliman Gilbert H
Director · 2.50K sh · $475,000
Aug 11
Gilliam Joseph E
Officer · 27.96K sh · $5.00M
Aug 11
Gilliam Joseph E
Officer · 32.04K sh · $5.78M
Aug 07
Thurman Alex R.
Officer · 20.00K sh · $3.60M
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Provenance: Ownership from parsed 13F common-stock positions (tracked universe, comparable sets for changes); insider rows from Forms 3/4/5; stakes from Schedules 13D/13G; every filing links to its original on SEC EDGAR.
Reporting period: Q1 2026 ·
Methodology ·
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