KROS Keros Therapeutics, Inc.
Keros Therapeutics, Inc. (KROS) Hedge Fund Activity
This view isolates hedge funds from the broader institutional ownership shown on the Institutional tab. A pension fund tracking an index may have no view on a stock; when a hedge fund builds or exits a position, that decision can carry information. This page measures those changes. Positions as of June 30, 2026.
Based on quarterly 13F long-equity filings. Changes compare reported quarter-end positions; filings can be reported up to 45 days later and do not represent a fund's complete exposure.
Most significant moves
Ranked by conviction, not size — how much of the fund's own book the position represents, how far it moved, and what kind of fund made it.
| Fund | Action | Shares changed | Change | Est. value | Portfolio wt. | Score |
|---|---|---|---|---|---|---|
| MARSHALL WACE, LLP Long/Short | New | +34.6K | — | $370.2K | 0.0% | 56 |
| Nantahala Capital Management Event Long/Short | Increased | +1.46M | +107.4% | $15.6M | 1.0% | 56 |
| Squarepoint Ops LLC Quant | New | +31.2K | — | $333.9K | 0.0% | 54 |
| Magnetar Capital Event Quant | Sold Out | -30.1K | -100.0% | $321.9K | 0.0% | 54 |
| Tudor Investment Corporation Macro | Sold Out | -28.0K | -100.0% | $299.7K | 0.0% | 53 |
| Point72 Asset Management, L.P. | Reduced | -98.6K | -90.5% | $1.1M | 0.0% | 53 |
| Jain Global Long/Short Quant | New | +59.2K | — | $633.5K | 0.0% | 52 |
| ADAR1 Capital Management Long/Short Growth | Increased | +149.5K | +153.6% | $1.6M | 0.1% | 50 |
| Brevan Howard Capital Management Macro | Sold Out | -14.7K | -100.0% | $156.8K | 0.0% | 49 |
| Winton Group Quant Macro | Sold Out | -36.4K | -100.0% | $389.8K | 0.0% | 48 |
Most significant buyers
By move score, not size.
- MARSHALL WACE, LLP
- Nantahala Capital Management
- Squarepoint Ops LLC
- Jain Global
- ADAR1 Capital Management
Most significant sellers
By move score, not size.
- Magnetar Capital
- Tudor Investment Corporation
- Point72 Asset Management, L.P.
- Brevan Howard Capital Management
- Winton Group
Hedge fund positions
| Fund | Tier | Shares | Previous | Change | Change % | Portfolio wt. | Action | Score |
|---|---|---|---|---|---|---|---|---|
| MARSHALL WACE, LLP | 2 | 34.6K | 0 | +34.6K | — | 0.0% | New | 56 |
| Nantahala Capital Management | 3 | 2.8M | 1.4M | +1.46M | +107.4% | 1.0% | Increased | 56 |
| Squarepoint Ops LLC | 2 | 31.2K | 0 | +31.2K | — | 0.0% | New | 54 |
| Magnetar Capital | 2 | 0 | 30.1K | -30.1K | -100.0% | 0.0% | Sold Out | 54 |
| Tudor Investment Corporation | 2 | 0 | 28.0K | -28.0K | -100.0% | 0.0% | Sold Out | 53 |
| Point72 Asset Management, L.P. | 1 | 10.4K | 109.0K | -98.6K | -90.5% | 0.0% | Reduced | 53 |
| Jain Global | 3 | 59.2K | 0 | +59.2K | — | 0.0% | New | 52 |
| ADAR1 Capital Management | 3 | 246.8K | 97.3K | +149.5K | +153.6% | 0.1% | Increased | 50 |
| Brevan Howard Capital Management | 3 | 0 | 14.7K | -14.7K | -100.0% | 0.0% | Sold Out | 49 |
| Winton Group | 4 | 0 | 36.4K | -36.4K | -100.0% | 0.0% | Sold Out | 48 |
| AQR Capital Management | 3 | 967.9K | 406.6K | +561.3K | +138.1% | 0.0% | Increased | 47 |
| MILLENNIUM MANAGEMENT LLC | 2 | 184.8K | 106.9K | +78.0K | +73.0% | 0.0% | Increased | 44 |
| D. E. Shaw & Co., Inc. | 1 | 267.5K | 509.6K | -242.1K | -47.5% | 0.0% | Reduced | 41 |
| Y-Intercept | 4 | 48.2K | 164.5K | -116.3K | -70.7% | 0.0% | Reduced | 37 |
| TWO SIGMA INVESTMENTS, LP | 2 | 246.6K | 363.8K | -117.2K | -32.2% | 0.0% | Reduced | 36 |
| RENAISSANCE TECHNOLOGIES LLC | 1 | 359.1K | 453.5K | -94.4K | -20.8% | 0.0% | Reduced | 35 |
| Qube Research & Technologies Ltd | 2 | 608.8K | 724.9K | -116.1K | -16.0% | 0.0% | Reduced | 30 |
| Man Group | 3 | 155.5K | 238.6K | -83.1K | -34.8% | 0.0% | Reduced | 30 |
| CITADEL ADVISORS LLC | 1 | 396.1K | 406.7K | -10.6K | -2.6% | 0.0% | Reduced | 27 |
| Engineers Gate | 4 | 12.2K | 16.6K | -4.4K | -26.4% | 0.0% | Reduced | 23 |
| OrbiMed Advisors | 2 | 759.2K | 759.2K | 0 | +0.0% | 0.2% | Unchanged | 22 |
| Madison Avenue Partners | 2 | 626.6K | 626.6K | 0 | +0.0% | 0.3% | Unchanged | 20 |
Every fund above opens. Subscribers can see any manager's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
Sign in or subscribeHedge funds are identified from their 13F filings, which are due 45 days after quarter end and cover long U.S.-listed equity positions only. A fund's short book never appears, so a reduced position can mean a changed view or a changed hedge — the filing doesn't say which.