Werewolf Therapeutics, Inc. - HOWL
Detailed investor-level table based on 13F positions.
Methodology:
Market value and % of portfolio use SEC reported VALUE ($000).
For PUT/CALL positions this reflects reported underlying exposure, not premium cash paid/received.
Details.
Rows: 0
| Investor | History | Status | Shares held | Market value ($000) | % of portfolio | Previous % | Rank | Change in shares | % change in shares | Source | Date reported |
|---|---|---|---|---|---|---|---|---|---|---|---|
| DC Funds, LP | History | No change | 589,102 | 490,486 | 33.01% | 25.69% | 1 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| RA CAPITAL MANAGEMENT, L.P. | History | No change | 6,681,307 | 5,562 | 0.06% | 0.04% | 2 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| VANGUARD CAPITAL MANAGEMENT LLC | History | New | 1,217,976 | 1,014 | 0.0% | — | 3 | +1,217,976 | New | Q1 2026 | May 15, 2026 |
| MPM BioImpact LLC | History | Reduced | 1,208,810 | 1,006 | 0.08% | 0.1% | 4 | -184,747 | -13.26% | Q1 2026 | May 15, 2026 |
| VANGUARD GROUP INC | History | No change | 1,408,047 | 892 | 0.0% | 0.0% | 5 | 0 | 0.0% | Q4 2025 | Jan 29, 2026 |
| Lynx1 Capital Management LP | History | Added to | 657,786 | 547 | 0.09% | 0.08% | 6 | +1,860 | 0.28% | Q1 2026 | May 01, 2026 |
| SPHERA FUNDS MANAGEMENT LTD. | History | No change | 626,810 | 521 | 0.08% | 0.08% | 7 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Squadron Capital Management LLC | History | New | 563,535 | 469 | 0.17% | — | 8 | +563,535 | New | Q1 2026 | May 15, 2026 |
| RENAISSANCE TECHNOLOGIES LLC | History | Reduced | 516,218 | 429 | 0.0% | 0.0% | 9 | -161,548 | -23.84% | Q1 2026 | May 14, 2026 |
| GEODE CAPITAL MANAGEMENT, LLC | History | Added to | 389,487 | 324 | 0.0% | 0.0% | 10 | +53,601 | 15.96% | Q1 2026 | May 15, 2026 |
| BANK OF AMERICA CORP /DE/ | History | Reduced | 264,583 | 220 | 0.0% | 0.0% | 11 | -472,967 | -64.13% | Q1 2026 | May 15, 2026 |
| VANGUARD FIDUCIARY TRUST CO | History | New | 157,726 | 131 | 0.0% | — | 12 | +157,726 | New | Q1 2026 | May 08, 2026 |
| MILLENNIUM MANAGEMENT LLC | History | Reduced | 132,050 | 109 | 0.0% | 0.0% | 13 | -108,059 | -45.0% | Q1 2026 | May 15, 2026 |
| STATE STREET CORP | History | No change | 119,168 | 99 | 0.0% | 0.0% | 14 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| BlackRock, Inc. | History | Reduced | 101,608 | 84 | 0.0% | 0.0% | 15 | -35 | -0.03% | Q1 2026 | May 13, 2026 |
| Alyeska Investment Group, L.P. | History | Reduced | 86,554 | 72 | 0.0% | 0.0% | 17 | -149,151 | -63.28% | Q1 2026 | May 15, 2026 |
| NORTHERN TRUST CORP | History | No change | 86,851 | 72 | 0.0% | 0.0% | 16 | 0 | 0.0% | Q1 2026 | May 14, 2026 |
| JANE STREET GROUP, LLC | History | Reduced | 82,836 | 68 | 0.0% | 0.0% | 18 | -74,486 | -47.35% | Q1 2026 | May 12, 2026 |
| BRIDGEWAY CAPITAL MANAGEMENT, LLC | History | No change | 77,000 | 64 | 0.0% | 0.0% | 19 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| UBS Group AG | History | Added to | 66,857 | 55 | 0.0% | 0.0% | 20 | +6,149 | 10.13% | Q1 2026 | May 05, 2026 |
| XTX Topco Ltd | History | New | 50,929 | 42 | 0.0% | — | 21 | +50,929 | New | Q1 2026 | May 15, 2026 |
| GOLDMAN SACHS GROUP INC | History | Added to | 38,266 | 31 | 0.0% | 0.0% | 22 | +4,193 | 12.31% | Q1 2026 | May 15, 2026 |
| MORGAN STANLEY | History | Reduced | 33,799 | 28 | 0.0% | 0.0% | 23 | -12,203 | -26.53% | Q1 2026 | May 15, 2026 |
| SIMPLEX TRADING, LLC | History | Added to | 32,526 | 27 | 0.0% | 0.0% | 24 | +8,472 | 35.22% | Q1 2026 | May 14, 2026 |
| Verdad Advisers, LP | History | New | 29,760 | 24 | 0.03% | — | 25 | +29,760 | New | Q1 2026 | May 15, 2026 |
| RAYMOND JAMES FINANCIAL INC | History | New | 19,778 | 16 | 0.0% | — | 26 | +19,778 | New | Q1 2026 | May 14, 2026 |
| HRT FINANCIAL LP | History | New | 17,861 | 14 | 0.0% | — | 27 | +17,861 | New | Q1 2026 | May 14, 2026 |
| Delta Investment Management, LLC | History | No change | 14,925 | 12 | 0.0% | 0.0% | 28 | 0 | 0.0% | Q1 2026 | May 12, 2026 |
| CERTUITY, LLC | History | No change | 15,000 | 12 | 0.0% | 0.0% | 29 | 0 | 0.0% | Q1 2026 | May 11, 2026 |
| BARCLAYS PLC | History | Reduced | 13,235 | 11 | 0.0% | 0.0% | 30 | -1 | -0.01% | Q1 2026 | May 14, 2026 |
| Larson Financial Group LLC | History | No change | 13,052 | 10 | 0.0% | 0.0% | 31 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| Ranch Capital Advisors Inc. | History | No change | 12,000 | 9 | 0.0% | 0.0% | 32 | 0 | 0.0% | Q1 2026 | May 06, 2026 |
| CITADEL ADVISORS LLC | History | New | 10,382 | 8 | 0.0% | — | 36 | +10,382 | New | Q1 2026 | May 15, 2026 |
| Vanguard Global Advisers, LLC | History | New | 10,343 | 8 | 0.0% | — | 37 | +10,343 | New | Q1 2026 | May 08, 2026 |
| LPL Financial LLC | History | New | 10,000 | 8 | 0.0% | — | 35 | +10,000 | New | Q1 2026 | May 06, 2026 |
| HBK Sorce Advisory LLC | History | No change | 13,227 | 8 | 0.0% | 0.0% | 33 | 0 | 0.0% | Q1 2026 | May 11, 2026 |
| Cetera Investment Advisers | History | No change | 10,200 | 8 | 0.0% | 0.0% | 34 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| OSAIC HOLDINGS, INC. | History | No change | 8,625 | 7 | 0.0% | 0.0% | 38 | 0 | 0.0% | Q1 2026 | May 15, 2026 |
| TWO SIGMA ADVISERS, LP | History | No change | 10,300 | 6 | 0.0% | 0.0% | 39 | 0 | 0.0% | Q4 2025 | Feb 17, 2026 |
| Financial Perspectives, Inc | History | No change | 6,750 | 5 | 0.0% | 0.0% | 40 | 0 | 0.0% | Q1 2026 | May 11, 2026 |
| TFC Financial Management, Inc. | History | No change | 4,500 | 3 | 0.0% | 0.0% | 41 | 0 | 0.0% | Q1 2026 | Apr 23, 2026 |
| CITIGROUP INC | History | Added to | 3,384 | 2 | 0.0% | — | 42 | +3,383 | 338300.0% | Q1 2026 | May 11, 2026 |
| JPMORGAN CHASE & CO | History | Added to | 2,096 | 1 | 0.0% | 0.0% | 43 | +24 | 1.16% | Q1 2026 | May 13, 2026 |
| GROUP ONE TRADING LLC | History | No change | 1,871 | 1 | 0.0% | 0.0% | 44 | 0 | 0.0% | Q1 2026 | May 13, 2026 |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | History | Closed out | 0 | 0 | — | 0.0% | — | -99,829 | -100.0% | Q1 2026 | May 15, 2026 |
| Vontobel Holding Ltd. | History | Closed out | 0 | 0 | — | 0.0% | — | -60,003 | -100.0% | Q1 2026 | May 08, 2026 |
| Regal Investment Advisors LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -52,593 | -100.0% | Q1 2026 | May 14, 2026 |
| EDGEWOOD MANAGEMENT LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -50,000 | -100.0% | Q1 2026 | May 14, 2026 |
| Point72 Asset Management, L.P. | History | Closed out | 0 | 0 | — | 0.0% | — | -14,483 | -100.0% | Q1 2026 | May 15, 2026 |
| Engineers Gate Manager LP | History | Closed out | 0 | 0 | — | 0.0% | — | -12,185 | -100.0% | Q1 2026 | May 15, 2026 |
| HIGHLINE WEALTH PARTNERS LLC | History | Closed out | 0 | 0 | — | 0.0% | — | -12,000 | -100.0% | Q1 2026 | Apr 06, 2026 |
| StoneX Group Inc. | History | Closed out | 0 | 0 | — | 0.0% | — | -10,511 | -100.0% | Q1 2026 | May 14, 2026 |
| FEDERATED HERMES, INC. | History | Closed out | 0 | 0 | — | 0.0% | — | -4,387 | -100.0% | Q1 2026 | May 11, 2026 |
| FMR LLC | History | Reduced | 39 | 0 | — | 0.0% | — | -3,592 | -98.93% | Q1 2026 | May 15, 2026 |
| NISA INVESTMENT ADVISORS, LLC | History | Closed out | 0 | 0 | — | — | — | -345 | -100.0% | Q1 2026 | Apr 30, 2026 |
| NORTHWESTERN MUTUAL WEALTH MANAGEMENT CO | History | Added to | 200 | 0 | — | — | — | +196 | 4900.0% | Q1 2026 | May 07, 2026 |
| ROYAL BANK OF CANADA | History | Closed out | 0 | 0 | — | — | — | -62 | -100.0% | Q1 2026 | May 15, 2026 |
| SBI Securities Co., Ltd. | History | Added to | 80 | 0 | — | — | — | +40 | 100.0% | Q1 2026 | Apr 27, 2026 |
| Arax Advisory Partners | History | Reduced | 12 | 0 | — | — | — | -27 | -69.23% | Q1 2026 | May 13, 2026 |
| BNP PARIBAS FINANCIAL MARKETS | History | Reduced | 790 | 0 | — | — | — | -2 | -0.25% | Q1 2026 | May 12, 2026 |
| Optiver Holding B.V. | History | No change | 22 | 0 | — | — | — | 0 | 0.0% | Q1 2026 | Jun 02, 2026 |