Werewolf TherapeuticsHOWL
13F holders, Q4 2025 (December 31)At the end of Q4 2025, 51 institutions reported holding Werewolf Therapeutics Inc. (HOWL) in their 13F filings, down 11 from Q3 2025. 7 opened new positions and 15 sold out. The largest holders were Ra Capital Management, L.P. ($4.2M), Vanguard Group Inc. ($893K) and MPM Bioimpact LLC ($884K). 3 famous investors held it, including Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio), Israel Englander (0.0% of Millennium Management's portfolio) and Steve Cohen (0.0% of Point72 Asset Management's portfolio).
- Company
- Werewolf Therapeutics Inc.
- CUSIP
- 95075A107
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 7 | $456K |
| Exits | 15 | $1.4M |
All 13F filers, Q3 2025 → Q4 2025: 1,120,515 shares bought and 3,124,044 shares sold, net −2,003,529 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 51 holders
| Ra Capital Management, L.P. | 0.04% | No change | 6,681,307 | $4.2M |
| Vanguard Group Inc. | 0.00% | No change | 1,408,047 | $893K |
| MPM Bioimpact LLC | 0.10% | Reduce -42.1% | 1,393,557 | $884K |
| Bank of America Corp. | 0.00% | Reduce -59.7% | 737,550 | $467K |
| Renaissance Technologies | 0.00% | Add +48.6% | 677,766 | $429K |
| Lynx1 Capital Management LP | 0.08% | New | 655,926 | $416K |
| Sphera Funds Management LTD. | 0.08% | No change | 626,810 | $397K |
| DC Funds, LP | 25.69% | No change | 589,102 | $373K |
| Geode Capital Management, LLC | 0.00% | Add +1.5% | 335,886 | $213K |
| Millennium Management | 0.00% | Reduce -24.3% | 240,109 | $152K |
| Alyeska Investment Group, L.P. | 0.00% | No change | 235,705 | $149K |
| Jane Street Group, LLC | 0.00% | Reduce -41.4% | 157,322 | $100K |
| State Street Corp. | 0.00% | No change | 119,168 | $75K |
| BlackRock, Inc. | 0.00% | Add +0.3% | 101,643 | $64K |
| Susquehanna International Group, LLP | 0.00% | Add +7.3% | 99,829 | $63K |
| Northern Trust Corp. | 0.00% | Add +31.9% | 86,851 | $55K |
| Bridgeway Capital Management, LLC | 0.00% | Reduce -24.5% | 77,000 | $49K |
| UBS Group AG | 0.00% | Add +375.2% | 60,708 | $38K |
| Vontobel Holding Ltd. | 0.00% | Add +66.7% | 60,003 | $38K |
| Regal Investment Advisors LLC | 0.00% | Add +93.3% | 52,593 | $33K |
| Edgewood Management LLC | 0.00% | No change | 50,000 | $32K |
| Morgan Stanley | 0.00% | Add +138.9% | 46,002 | $29K |
| Goldman Sachs Group Inc. | 0.00% | Reduce -43.5% | 34,073 | $22K |
| Simplex Trading, LLC | 0.00% | Add +53.8% | 24,054 | $15K |
| Certuity, LLC | 0.00% | No change | 15,000 | $10K |
| Delta Investment Management, LLC | 0.00% | New | 14,925 | $9K |
| Point72 Asset Management | 0.00% | New | 14,483 | $9K |
| Barclays PLC | 0.00% | Reduce -0.3% | 13,236 | $8K |
| Larson Financial Group LLC | 0.00% | Add +30.5% | 13,052 | $8K |
| HBK Sorce Advisory LLC | 0.00% | No change | 13,227 | $8K |
| Engineers Gate Manager LP | 0.00% | New | 12,185 | $8K |
| Ranch Capital Advisors Inc. | 0.00% | New | 12,000 | $8K |
| Highline Wealth Partners LLC | 0.00% | Add +140.0% | 12,000 | $8K |
| StoneX Group Inc. | 0.00% | New | 10,511 | $7K |
| Two Sigma Advisers, LP | 0.00% | Reduce -70.2% | 10,300 | $7K |
| Cetera Investment Advisers | 0.00% | No change | 10,200 | $6K |
| Osaic Holdings, Inc. | 0.00% | Reduce -10.4% | 8,625 | $5K |
| Financial Perspectives, Inc | 0.00% | No change | 6,750 | $4K |
| TFC Financial Management, Inc. | 0.00% | Add +80.0% | 4,500 | $3K |
| Federated Hermes, Inc. | 0.00% | No change | 4,387 | $3K |
| FMR LLC | 0.00% | Reduce -67.8% | 3,631 | $2K |
| JPMorgan Chase & Co. | 0.00% | Add +84.5% | 2,072 | $1K |
| Group One Trading LLC | 0.00% | Reduce -29.9% | 1,871 | $1K |
| BNP Paribas Financial Markets | 0.00% | Reduce -0.1% | 792 | $502 |
| Nisa Investment Advisors, LLC | 0.00% | Reduce -74.9% | 345 | $219 |
| Arax Advisory Partners | 0.00% | Reduce -42.6% | 39 | $25 |
| SBI Securities Co., Ltd. | 0.00% | Reduce -2.4% | 40 | $25 |
| Optiver Holding B.V. | 0.00% | No change | 22 | $14 |
| Northwestern Mutual Wealth Management Co. | 0.00% | New | 4 | $3 |
| Citigroup Inc. | 0.00% | Reduce -100.0% | 1 | $1 |
| Royal Bank of Canada | 0.00% | Reduce -92.3% | 62 | $0 |
"% of holder's portfolio" is HOWL's weight in each manager's 13F, not the share of Werewolf Therapeutics Inc. the manager owns.