KROS Keros Therapeutics, Inc.
Keros Therapeutics, Inc. (KROS) Institutional Ownership
What the institutions did with KROS last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| Nantahala Capital Management, LLC | 2.8M | 14.1% |
| BlackRock, Inc. | 2.8M | 14.0% |
| AQR CAPITAL MANAGEMENT LLC | 967.9K | 4.8% |
| VANGUARD CAPITAL MANAGEMENT LLC | 833.6K | 4.2% |
| ORBIMED ADVISORS LLC | 759.2K | 3.8% |
| FEDERATED HERMES, INC. | 700.4K | 3.5% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 652.6K | 3.3% |
| MACKENZIE FINANCIAL CORP | 628.4K | 3.1% |
| Madison Avenue Partners, LP | 626.6K | 3.1% |
| Qube Research & Technologies Ltd | 608.8K | 3.0% |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 605.4K | 3.0% |
| STATE STREET CORP | 541.2K | 2.7% |
| GEODE CAPITAL MANAGEMENT, LLC | 510.8K | 2.6% |
| DIMENSIONAL FUND ADVISORS LP | 460.5K | 2.3% |
| CITADEL ADVISORS LLC | 396.1K | 2.0% |
| RENAISSANCE TECHNOLOGIES LLC | 359.1K | 1.8% |
| D. E. Shaw & Co., Inc. | 267.5K | 1.3% |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | 265.0K | 1.3% |
| Nuveen, LLC | 247.8K | 1.2% |
| ADAR1 Capital Management, LLC | 246.8K | 1.2% |
| TWO SIGMA INVESTMENTS, LP | 246.6K | 1.2% |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | 233.2K | 1.2% |
| MILLENNIUM MANAGEMENT LLC | 184.8K | 0.9% |
| GOLDMAN SACHS GROUP INC | 177.8K | 0.9% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 158.7K | 0.8% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Nantahala Capital Management, LLC | Increased | 1.4M | 2.8M | +1.5M |
| AQR CAPITAL MANAGEMENT LLC | Increased | 406.6K | 967.9K | +561.3K |
| MACKENZIE FINANCIAL CORP | Increased | 152.5K | 628.4K | +476.0K |
| BlackRock, Inc. | Increased | 2.4M | 2.8M | +382.4K |
| ARROWSTREET CAPITAL, LIMITED PARTNERSHIP | Reduced | 590.2K | 233.2K | -357.1K |
| D. E. Shaw & Co., Inc. | Reduced | 509.6K | 267.5K | -242.1K |
| GEODE CAPITAL MANAGEMENT, LLC | Reduced | 681.5K | 510.8K | -170.6K |
| ADAR1 Capital Management, LLC | Increased | 97.3K | 246.8K | +149.5K |
| DIMENSIONAL FUND ADVISORS LP | Increased | 321.4K | 460.5K | +139.2K |
| Connor, Clark & Lunn Investment Management Ltd. | Reduced | 257.9K | 127.9K | -130.0K |
| O'SHAUGHNESSY ASSET MANAGEMENT, LLC | New | 0 | 126.4K | +126.4K |
| TWO SIGMA INVESTMENTS, LP | Reduced | 363.8K | 246.6K | -117.2K |
| Y-Intercept (Hong Kong) Ltd | Reduced | 164.5K | 48.2K | -116.3K |
| Qube Research & Technologies Ltd | Reduced | 724.9K | 608.8K | -116.1K |
| JACOBS LEVY EQUITY MANAGEMENT, INC | Reduced | 706.1K | 605.4K | -100.6K |
| NORTHERN TRUST CORP | Reduced | 254.2K | 153.8K | -100.3K |
| Point72 Asset Management, L.P. | Reduced | 109.0K | 10.4K | -98.6K |
| RENAISSANCE TECHNOLOGIES LLC | Reduced | 453.5K | 359.1K | -94.4K |
| LOS ANGELES CAPITAL MANAGEMENT LLC | Reduced | 172.2K | 84.4K | -87.8K |
| Man Group plc | Reduced | 238.6K | 155.5K | -83.1K |
| MILLENNIUM MANAGEMENT LLC | Increased | 106.9K | 184.8K | +78.0K |
| HRT FINANCIAL LP | Sold Out | 77.0K | 0 | -77.0K |
| JANE STREET GROUP, LLC | Increased | 44.5K | 115.3K | +70.8K |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | Increased | 195.0K | 265.0K | +70.0K |
| Jain Global LLC | New | 0 | 59.2K | +59.2K |
| IEQ CAPITAL, LLC | New | 0 | 55.7K | +55.7K |
| STRS OHIO | Sold Out | 50.6K | 0 | -50.6K |
| ACADIAN ASSET MANAGEMENT LLC | Increased | 65.4K | 115.6K | +50.2K |
| GOLDMAN SACHS GROUP INC | Reduced | 224.5K | 177.8K | -46.6K |
| MORGAN STANLEY | Reduced | 124.1K | 79.3K | -44.8K |
| Susquehanna Portfolio Strategies, LLC | New | 0 | 44.8K | +44.8K |
| BNP PARIBAS FINANCIAL MARKETS | Increased | 6.9K | 49.9K | +42.9K |
| GLOBEFLEX CAPITAL L P | Sold Out | 37.9K | 0 | -37.9K |
| WINTON GROUP Ltd | Sold Out | 36.4K | 0 | -36.4K |
| Jump Financial, LLC | Reduced | 50.4K | 15.4K | -35.0K |
| MARSHALL WACE, LLP | New | 0 | 34.6K | +34.6K |
| AVIVA PLC | Sold Out | 34.3K | 0 | -34.3K |
| Squarepoint Ops LLC | New | 0 | 31.2K | +31.2K |
| Magnetar Financial LLC | Sold Out | 30.1K | 0 | -30.1K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Reduced | 682.0K | 652.6K | -29.4K |
| XTX Topco Ltd | Reduced | 88.3K | 59.5K | -28.8K |
| TUDOR INVESTMENT CORP ET AL | Sold Out | 28.0K | 0 | -28.0K |
| BARCLAYS PLC | Increased | 23.2K | 49.7K | +26.5K |
| Mariner, LLC | Increased | 13.8K | 38.9K | +25.1K |
| JPMORGAN CHASE & CO | Reduced | 37.7K | 14.6K | -23.1K |
| FOX RUN MANAGEMENT, L.L.C. | Sold Out | 22.8K | 0 | -22.8K |
| BANK OF AMERICA CORP /DE/ | Reduced | 53.7K | 31.2K | -22.4K |
| SIMPLEX TRADING, LLC | Sold Out | 22.3K | 0 | -22.3K |
| FRANKLIN RESOURCES INC | Sold Out | 21.8K | 0 | -21.8K |
| PDT Partners, LLC | Reduced | 32.7K | 11.4K | -21.3K |
| PANAGORA ASSET MANAGEMENT INC | Increased | 34.7K | 56.0K | +21.3K |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Reduced | 180.0K | 158.7K | -21.2K |
| CANADA PENSION PLAN INVESTMENT BOARD | Reduced | 44.1K | 23.1K | -21.0K |
| LSV ASSET MANAGEMENT | Sold Out | 20.9K | 0 | -20.9K |
| STATE STREET CORP | Reduced | 561.7K | 541.2K | -20.5K |
| AMERICAN CENTURY COMPANIES INC | Increased | 64.3K | 84.7K | +20.4K |
| Russell Investments Group, Ltd. | Reduced | 81.3K | 60.9K | -20.4K |
| MARTINGALE ASSET MANAGEMENT L P | Increased | 47.6K | 67.8K | +20.2K |
| Cerity Partners LLC | New | 0 | 18.3K | +18.3K |
| WEALTH ENHANCEMENT ADVISORY SERVICES, LLC | New | 0 | 17.8K | +17.8K |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.