Security record · archived quarter
KROS
Keros Therapeutics, Inc. · Healthcare · Biotechnology
68Tracked holders
+1Δ holders
14.80MShares held
$301.38MReported value
+1New positions
−0Exits
Momentum inputs (comparable managers):
holder breadth +1.5% ·
share flow -10.3% ·
net new positions +1.5%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
All ownership figures: tracked 13F managers only, common-stock positions, reporting period Q4 2025
Ownership over time
| Quarter | Holders | Δ | Shares | Reported value | New | Exits |
|---|---|---|---|---|---|---|
| Q2 2026 | 68 | -2 | 12.51M | $133.89M | +5 | −7 |
| Q1 2026 | 72 | +4 | 12.53M | $138.59M | +8 | −4 |
| Q4 2025 | 68 | +1 | 14.80M | $301.38M | +1 | — |
| Q3 2025 | 16 | 0 | 12.05M | $190.67M | — | — |
| Q2 2025 | 13 | +1 | 9.42M | $125.76M | +2 | −1 |
| Q1 2025 | 9 | -1 | 3.92M | $39.99M | +1 | −2 |
| Q4 2024 | 10 | 0 | 4.67M | $74.00M | +1 | −1 |
| Q3 2024 | 9 | -1 | 4.72M | $274.14M | +1 | −2 |
| Q2 2024 | 10 | — | 3.52M | $160.87M | — | — |
Who holds it · Q4 2025
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 2.29M | -15.7% | $46.64M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 2.29M | -15.7% | $46.64M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 2.29M | -15.7% | $46.64M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 2.29M | -15.7% | $46.64M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 2.29M | -15.7% | $46.64M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 2.29M | -15.7% | $46.64M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 2.29M | -15.7% | $46.64M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 2.29M | -15.7% | $46.64M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 2.29M | -15.7% | $46.64M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 2.29M | -15.7% | $46.64M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 2.29M | -15.7% | $46.64M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 12 | The Vanguard Group ✦ (passive) | 1.53M | -43.9% | $31.06M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 13 | The Vanguard Group ✦ (passive) | 1.53M | -43.9% | $31.06M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 14 | The Vanguard Group ✦ (passive) | 1.53M | -43.9% | $31.06M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 15 | The Vanguard Group ✦ (passive) | 1.53M | -43.9% | $31.06M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 16 | Arrowstreet Capital ✦ | 1.33M | +415.8% | $27.17M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 17 | State Street Global Advisors ✦ (passive) | 1.08M | -17.4% | $21.91M | 0.0% | ▼ Trim | 5 | SEC ↗ |
| 18 | Qube Research & Technologies Ltd | 783.92K | — | $15.96M | 0.0% | n/c | 1 | SEC ↗ |
| 19 | D. E. Shaw & Co. ✦ | 755.47K | -43.3% | $15.38M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 20 | Federated Hermes, Inc. | 654.72K | — | $13.33M | 0.0% | n/c | 1 | SEC ↗ |
| 21 | Federated Hermes, Inc. | 654.72K | — | $13.33M | 0.0% | n/c | 1 | SEC ↗ |
| 22 | Geode Capital Management ✦ (passive) | 635.21K | -24.1% | $12.94M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 23 | Geode Capital Management ✦ (passive) | 635.21K | -24.1% | $12.94M | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 24 | Renaissance Technologies ✦ | 591.69K | +282.5% | $12.05M | 0.0% | ▲ Add | 3 | SEC ↗ |
| 25 | Goldman Sachs Group ✦ | 590.52K | -55.5% | $12.02M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 26 | Goldman Sachs Group ✦ | 590.52K | -55.5% | $12.02M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 27 | Citadel Advisors ✦ | 472.52K | +168.3% | $9.62M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 28 | Citadel Advisors ✦ | 472.52K | +168.3% | $9.62M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 29 | Connor, Clark & Lunn Investment… | 321.35K | — | $6.54M | 0.0% | n/c | 1 | SEC ↗ |
| 30 | Two Sigma Investments ✦ | 318.44K | +285.9% | $6.48M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 31 | Hrt Financial Lp | 260.89K | — | $5.31M | 0.0% | n/c | 1 | SEC ↗ |
| 32 | Northern Trust Corp | 250.57K | — | $5.10M | 0.0% | n/c | 1 | SEC ↗ |
| 33 | Northern Trust Corp | 250.57K | — | $5.10M | 0.0% | n/c | 1 | SEC ↗ |
| 34 | Northern Trust Corp | 250.57K | — | $5.10M | 0.0% | n/c | 1 | SEC ↗ |
| 35 | Northern Trust Corp | 250.57K | — | $5.10M | 0.0% | n/c | 1 | SEC ↗ |
| 36 | Northern Trust Corp | 250.57K | — | $5.10M | 0.0% | n/c | 1 | SEC ↗ |
| 37 | Morgan Stanley ✦ | 230.49K | -41.7% | $4.69M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 38 | Morgan Stanley ✦ | 230.49K | -41.7% | $4.69M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 39 | Morgan Stanley ✦ | 230.49K | -41.7% | $4.69M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 40 | Morgan Stanley ✦ | 230.49K | -41.7% | $4.69M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 41 | Morgan Stanley ✦ | 230.49K | -41.7% | $4.69M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 42 | Morgan Stanley ✦ | 230.49K | -41.7% | $4.69M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 43 | Morgan Stanley ✦ | 230.49K | -41.7% | $4.69M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 44 | Millennium Management ✦ | 220.21K | +312.8% | $4.48M | 0.0% | ▲ Add | 7 | SEC ↗ |
| 45 | Deutsche Bank Ag\ | 195.28K | — | $3.98M | 0.0% | n/c | 1 | SEC ↗ |
| 46 | Man Group plc | 190.21K | — | $3.87M | 0.0% | n/c | 1 | SEC ↗ |
| 47 | Charles Schwab Investment… | 186.78K | — | $3.80M | 0.0% | n/c | 1 | SEC ↗ |
| 48 | AQR Capital Management ✦ | 180.54K | -11.7% | $3.68M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 49 | AQR Capital Management ✦ | 180.54K | -11.7% | $3.68M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 50 | AQR Capital Management ✦ | 180.54K | -11.7% | $3.68M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 51 | AQR Capital Management ✦ | 180.54K | -11.7% | $3.68M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 52 | AQR Capital Management ✦ | 180.54K | -11.7% | $3.68M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 53 | AQR Capital Management ✦ | 180.54K | -11.7% | $3.68M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 54 | Jane Street Group, Llc | 162.01K | — | $3.30M | 0.0% | n/c | 1 | SEC ↗ |
| 55 | Jane Street Group, Llc | 162.01K | — | $3.30M | 0.0% | n/c | 1 | SEC ↗ |
| 56 | Jane Street Group, Llc | 162.01K | — | $3.30M | 0.0% | n/c | 1 | SEC ↗ |
| 57 | Nomura Holdings Inc | 156.75K | — | $3.19M | 0.0% | n/c | 1 | SEC ↗ |
| 58 | Ameriprise Financial Inc | 122.83K | — | $2.50M | 0.0% | n/c | 1 | SEC ↗ |
| 59 | Bank of New York Mellon Corp | 121.58K | — | $2.48M | 0.0% | n/c | 1 | SEC ↗ |
| 60 | Bank of New York Mellon Corp | 121.58K | — | $2.48M | 0.0% | n/c | 1 | SEC ↗ |
| 61 | Bank of New York Mellon Corp | 121.58K | — | $2.48M | 0.0% | n/c | 1 | SEC ↗ |
| 62 | Bank of New York Mellon Corp | 121.58K | — | $2.48M | 0.0% | n/c | 1 | SEC ↗ |
| 63 | Bank of New York Mellon Corp | 121.58K | — | $2.48M | 0.0% | n/c | 1 | SEC ↗ |
| 64 | Bank Of America Corp /De/ | 100.11K | — | $2.04M | 0.0% | n/c | 1 | SEC ↗ |
| 65 | Bank Of America Corp /De/ | 100.11K | — | $2.04M | 0.0% | n/c | 1 | SEC ↗ |
| 66 | Bank Of America Corp /De/ | 100.11K | — | $2.04M | 0.0% | n/c | 1 | SEC ↗ |
| 67 | Bank Of America Corp /De/ | 100.11K | — | $2.04M | 0.0% | n/c | 1 | SEC ↗ |
| 68 | UBS Group AG | 97.08K | — | $1.98M | 0.0% | n/c | 1 | SEC ↗ |
| 69 | UBS Group AG | 97.08K | — | $1.98M | 0.0% | n/c | 1 | SEC ↗ |
| 70 | Invesco Ltd. | 87.43K | — | $1.78M | 0.0% | n/c | 1 | SEC ↗ |
| 71 | Invesco Ltd. | 87.43K | — | $1.78M | 0.0% | n/c | 1 | SEC ↗ |
| 72 | Invesco Ltd. | 87.43K | — | $1.78M | 0.0% | n/c | 1 | SEC ↗ |
| 73 | Russell Investments Group, Ltd. | 80.77K | — | $1.64M | 0.0% | n/c | 1 | SEC ↗ |
| 74 | Russell Investments Group, Ltd. | 80.77K | — | $1.64M | 0.0% | n/c | 1 | SEC ↗ |
| 75 | Russell Investments Group, Ltd. | 80.77K | — | $1.64M | 0.0% | n/c | 1 | SEC ↗ |
| 76 | Russell Investments Group, Ltd. | 80.77K | — | $1.64M | 0.0% | n/c | 1 | SEC ↗ |
| 77 | Russell Investments Group, Ltd. | 80.77K | — | $1.64M | 0.0% | n/c | 1 | SEC ↗ |
| 78 | Russell Investments Group, Ltd. | 80.77K | — | $1.64M | 0.0% | n/c | 1 | SEC ↗ |
| 79 | Russell Investments Group, Ltd. | 80.77K | — | $1.64M | 0.0% | n/c | 1 | SEC ↗ |
| 80 | Russell Investments Group, Ltd. | 80.77K | — | $1.64M | 0.0% | n/c | 1 | SEC ↗ |
| 81 | Barclays Plc | 74.73K | — | $1.52M | 0.0% | n/c | 1 | SEC ↗ |
| 82 | Nuveen, LLC | 63.10K | — | $1.28M | 0.0% | n/c | 1 | SEC ↗ |
| 83 | Nuveen, LLC | 63.10K | — | $1.28M | 0.0% | n/c | 1 | SEC ↗ |
| 84 | Dimensional Fund Advisors Lp | 58.01K | — | $1.18M | 0.0% | n/c | 1 | SEC ↗ |
| 85 | Dimensional Fund Advisors Lp | 58.01K | — | $1.18M | 0.0% | n/c | 1 | SEC ↗ |
| 86 | Dimensional Fund Advisors Lp | 58.01K | — | $1.18M | 0.0% | n/c | 1 | SEC ↗ |
| 87 | Dimensional Fund Advisors Lp | 58.01K | — | $1.18M | 0.0% | n/c | 1 | SEC ↗ |
| 88 | Mackenzie Financial Corp | 51.38K | — | $1.04M | 0.0% | n/c | 1 | SEC ↗ |
| 89 | Rhumbline Advisers | 44.23K | — | $900,615 | 0.0% | n/c | 1 | SEC ↗ |
| 90 | Canada Pension Plan Investment Board | 44.10K | — | $897,876 | 0.0% | n/c | 1 | SEC ↗ |
| 91 | Massachusetts Financial Services Co… | 43.70K | — | $889,631 | 0.0% | n/c | 1 | SEC ↗ |
| 92 | Massachusetts Financial Services Co… | 43.70K | — | $889,631 | 0.0% | n/c | 1 | SEC ↗ |
| 93 | Point72 Asset Management ✦ | 38.85K | New | $790,945 | 0.0% | New | 1 | SEC ↗ |
| 94 | American Century Companies Inc | 36.64K | — | $745,990 | 0.0% | n/c | 1 | SEC ↗ |
| 95 | Fidelity (FMR) ✦ | 35.60K | -64.6% | $724,762 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 96 | Fidelity (FMR) ✦ | 35.60K | -64.6% | $724,762 | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 97 | Wells Fargo & Company/Mn | 32.76K | — | $667,034 | 0.0% | n/c | 1 | SEC ↗ |
| 98 | Alliancebernstein L.P. | 30.86K | — | $628,310 | 0.0% | n/c | 1 | SEC ↗ |
| 99 | T. Rowe Price ✦ | 29.70K | -40.6% | $605,000 | 0.0% | ▼ Trim | 7 | SEC ↗ |
| 100 | Tudor Investment Corp Et Al | 28.31K | — | $576,331 | 0.0% | n/c | 1 | SEC ↗ |
“Their weight” = the position's share of that manager's reported 13F equity value — the conviction measure. ✦ = curated manager.
New buyers
| Point72 Asset Management | $790,945 | 0.0% |
Exited
| No tracked exits this quarter. |
Full-market context: across ALL 13F filers (SEC structured data, Q1 2026): 149 holders, 18.56M shares, $201.20M 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)
Aug 17
BIENAIME JEAN JACQUES
Director · 1.00K sh @ 10.27 · $10,270
Open-market sales (S)
Aug 18
Cho Esther
Officer · 4.49K sh · $46,151
Aug 18
Newton Charles W.
Director · 551 sh · $5,675
Aug 18
Lerner Lorena Raquel
Officer · 3.57K sh · $36,715
Aug 18
Tanini Annita
Officer · 1.22K sh · $12,595
Awards, exercises and tax withholding are never counted as buys or sales here. Methodology
Jul 29
SC 13G/A — BlackRock, Inc.
Jul 17
SC 13G — BlackRock Portfolio Management LLC
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: Q4 2025 ·
Methodology ·
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