Security record · archived quarter
KROS
Keros Therapeutics, Inc. · Healthcare · Biotechnology
72Tracked holders
+4Δ holders
12.53MShares held
$138.59MReported value
+8New positions
−4Exits
Momentum inputs (comparable managers):
holder breadth +5.9% ·
share flow -11.2% ·
net new positions +5.6%
— formula
Ownership fragmentation — more holders, smaller aggregate stake
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 | 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 · Q1 2026
| # | Manager | Shares | Δ shares | Value | Their weight | Held | ||
|---|---|---|---|---|---|---|---|---|
| 1 | BlackRock ✦ (passive) | 2.41M | +5.3% | $26.63M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 2 | BlackRock ✦ (passive) | 2.41M | +5.3% | $26.63M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 3 | BlackRock ✦ (passive) | 2.41M | +5.3% | $26.63M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 4 | BlackRock ✦ (passive) | 2.41M | +5.3% | $26.63M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 5 | BlackRock ✦ (passive) | 2.41M | +5.3% | $26.63M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 6 | BlackRock ✦ (passive) | 2.41M | +5.3% | $26.63M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 7 | BlackRock ✦ (passive) | 2.41M | +5.3% | $26.63M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 8 | BlackRock ✦ (passive) | 2.41M | +5.3% | $26.63M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 9 | BlackRock ✦ (passive) | 2.41M | +5.3% | $26.63M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 10 | BlackRock ✦ (passive) | 2.41M | +5.3% | $26.63M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 11 | BlackRock ✦ (passive) | 2.41M | +5.3% | $26.63M | 0.0% | ▲ Add | 4 | SEC ↗ |
| 12 | Vanguard Capital Management Llc | 831.42K | — | $9.18M | 0.0% | n/c | 1 | SEC ↗ |
| 13 | Qube Research & Technologies Ltd | 724.93K | -7.5% | $8.00M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 14 | Federated Hermes, Inc. | 689.23K | +5.3% | $7.61M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 15 | Federated Hermes, Inc. | 689.23K | +5.3% | $7.61M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 16 | Geode Capital Management ✦ (passive) | 681.46K | +7.3% | $7.52M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 17 | Geode Capital Management ✦ (passive) | 681.46K | +7.3% | $7.52M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 18 | Arrowstreet Capital ✦ | 590.25K | -55.8% | $6.52M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 19 | State Street Global Advisors ✦ (passive) | 561.73K | -47.8% | $6.20M | 0.0% | ▼ Trim | 6 | SEC ↗ |
| 20 | D. E. Shaw & Co. ✦ | 509.61K | -32.5% | $5.63M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 21 | D. E. Shaw & Co. ✦ | 509.61K | -32.5% | $5.63M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 22 | Renaissance Technologies ✦ | 453.48K | -23.4% | $5.01M | 0.0% | ▼ Trim | 4 | SEC ↗ |
| 23 | Citadel Advisors ✦ | 406.67K | -13.9% | $4.49M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 24 | Citadel Advisors ✦ | 406.67K | -13.9% | $4.49M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 25 | AQR Capital Management ✦ | 406.56K | +125.2% | $4.49M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 26 | AQR Capital Management ✦ | 406.56K | +125.2% | $4.49M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 27 | AQR Capital Management ✦ | 406.56K | +125.2% | $4.49M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 28 | AQR Capital Management ✦ | 406.56K | +125.2% | $4.49M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 29 | AQR Capital Management ✦ | 406.56K | +125.2% | $4.49M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 30 | AQR Capital Management ✦ | 406.56K | +125.2% | $4.49M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 31 | AQR Capital Management ✦ | 406.56K | +125.2% | $4.49M | 0.0% | ▲ Add | 5 | SEC ↗ |
| 32 | Two Sigma Investments ✦ | 363.83K | +14.3% | $4.02M | 0.0% | ▲ Add | 8 | SEC ↗ |
| 33 | Dimensional Fund Advisors Lp | 321.36K | +453.9% | $3.55M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 34 | Dimensional Fund Advisors Lp | 321.36K | +453.9% | $3.55M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 35 | Dimensional Fund Advisors Lp | 321.36K | +453.9% | $3.55M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 36 | Dimensional Fund Advisors Lp | 321.36K | +453.9% | $3.55M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 37 | Nuveen, LLC | 262.07K | +315.4% | $2.89M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 38 | Nuveen, LLC | 262.07K | +315.4% | $2.89M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 39 | Connor, Clark & Lunn Investment… | 257.88K | -19.8% | $2.85M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 40 | Northern Trust Corp | 254.19K | +1.4% | $2.81M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 41 | Northern Trust Corp | 254.19K | +1.4% | $2.81M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 42 | Northern Trust Corp | 254.19K | +1.4% | $2.81M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 43 | Northern Trust Corp | 254.19K | +1.4% | $2.81M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 44 | Man Group plc | 238.62K | +25.4% | $2.63M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 45 | Goldman Sachs Group ✦ | 224.48K | -62.0% | $2.48M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 46 | Goldman Sachs Group ✦ | 224.48K | -62.0% | $2.48M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 47 | Charles Schwab Investment… | 179.95K | -3.7% | $1.99M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 48 | Mackenzie Financial Corp | 152.45K | +196.7% | $1.68M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 49 | Wells Fargo & Company/Mn | 151.04K | +361.0% | $1.67M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 50 | Wells Fargo & Company/Mn | 151.04K | +361.0% | $1.67M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 51 | UBS Group AG | 145.57K | +50.0% | $1.61M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 52 | UBS Group AG | 145.57K | +50.0% | $1.61M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 53 | UBS Group AG | 145.57K | +50.0% | $1.61M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 54 | Morgan Stanley ✦ | 124.11K | -46.1% | $1.37M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 55 | Morgan Stanley ✦ | 124.11K | -46.1% | $1.37M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 56 | Morgan Stanley ✦ | 124.11K | -46.1% | $1.37M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 57 | Morgan Stanley ✦ | 124.11K | -46.1% | $1.37M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 58 | Morgan Stanley ✦ | 124.11K | -46.1% | $1.37M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 59 | Morgan Stanley ✦ | 124.11K | -46.1% | $1.37M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 60 | Morgan Stanley ✦ | 124.11K | -46.1% | $1.37M | 0.0% | ▼ Trim | 3 | SEC ↗ |
| 61 | Bank of New York Mellon Corp | 120.94K | -0.5% | $1.34M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 62 | Bank of New York Mellon Corp | 120.94K | -0.5% | $1.34M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 63 | Bank of New York Mellon Corp | 120.94K | -0.5% | $1.34M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 64 | Bank of New York Mellon Corp | 120.94K | -0.5% | $1.34M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 65 | Bank of New York Mellon Corp | 120.94K | -0.5% | $1.34M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 66 | Point72 Asset Management ✦ | 109.02K | +180.6% | $1.20M | 0.0% | ▲ Add | 2 | SEC ↗ |
| 67 | Millennium Management ✦ | 106.86K | -51.5% | $1.18M | 0.0% | ▼ Trim | 8 | SEC ↗ |
| 68 | Ameriprise Financial Inc | 102.48K | -16.6% | $1.13M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 69 | Ameriprise Financial Inc | 102.48K | -16.6% | $1.13M | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 70 | Invesco Ltd. | 87.77K | +0.4% | $969,003 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 71 | Invesco Ltd. | 87.77K | +0.4% | $969,003 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 72 | Invesco Ltd. | 87.77K | +0.4% | $969,003 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 73 | Russell Investments Group, Ltd. | 81.31K | +0.7% | $897,679 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 74 | Russell Investments Group, Ltd. | 81.31K | +0.7% | $897,679 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 75 | Russell Investments Group, Ltd. | 81.31K | +0.7% | $897,679 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 76 | Russell Investments Group, Ltd. | 81.31K | +0.7% | $897,679 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 77 | Russell Investments Group, Ltd. | 81.31K | +0.7% | $897,679 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 78 | Russell Investments Group, Ltd. | 81.31K | +0.7% | $897,679 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 79 | Russell Investments Group, Ltd. | 81.31K | +0.7% | $897,679 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 80 | Russell Investments Group, Ltd. | 81.31K | +0.7% | $897,679 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 81 | Russell Investments Group, Ltd. | 81.31K | +0.7% | $897,679 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 82 | Hrt Financial Lp | 77.00K | -70.5% | $850,000 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 83 | American Century Companies Inc | 64.26K | +75.4% | $709,430 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 84 | Principal Financial Group Inc | 59.59K | New | $657,918 | 0.0% | New | 1 | SEC ↗ |
| 85 | Principal Financial Group Inc | 59.59K | New | $657,918 | 0.0% | New | 1 | SEC ↗ |
| 86 | Alliancebernstein L.P. | 30.86K | 0.0% | $628,310 | 0.0% | Held | 2 | SEC ↗ |
| 87 | Hsbc Holdings Plc | 53.99K | New | $598,705 | 0.0% | New | 1 | SEC ↗ |
| 88 | Bank Of America Corp /De/ | 53.65K | -46.4% | $592,340 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 89 | Bank Of America Corp /De/ | 53.65K | -46.4% | $592,340 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 90 | Deutsche Bank Ag\ | 50.77K | -74.0% | $560,446 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 91 | Massachusetts Financial Services Co… | 49.00K | +12.1% | $540,938 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 92 | Massachusetts Financial Services Co… | 49.00K | +12.1% | $540,938 | 0.0% | ▲ Add | 2 | SEC ↗ |
| 93 | T. Rowe Price ✦ | 45.88K | +54.5% | $507,000 | 0.0% | ▲ Add | 8 | SEC ↗ |
| 94 | Jane Street Group, Llc | 44.46K | -72.6% | $490,805 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 95 | Jane Street Group, Llc | 44.46K | -72.6% | $490,805 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 96 | Canada Pension Plan Investment Board | 44.10K | 0.0% | $486,864 | 0.0% | Held | 2 | SEC ↗ |
| 97 | Rhumbline Advisers | 40.18K | -9.2% | $443,530 | 0.0% | ▼ Trim | 2 | SEC ↗ |
| 98 | JPMorgan Chase ✦ | 37.68K | +102.2% | $402,423 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 99 | JPMorgan Chase ✦ | 37.68K | +102.2% | $402,423 | 0.0% | ▲ Add | 3 | SEC ↗ |
| 100 | JPMorgan Chase ✦ | 37.68K | +102.2% | $402,423 | 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
| Principal Financial Group Inc | $657,918 | 0.0% |
| Principal Financial Group Inc | $657,918 | 0.0% |
| Hsbc Holdings Plc | $598,705 | 0.0% |
Exited
| Nomura Holdings Inc | $3.19M | was 0.0% |
| Jones Financial Companies Lllp | $28,423 | was 0.0% |
| Daiwa Securities Group Inc. | $3,000 | was 0.0% |
| Northwestern Mutual Wealth… | $937 | was 0.0% |
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: Q1 2026 ·
Methodology ·
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