Werewolf TherapeuticsHOWL
13F holders, Q2 2025 (June 30)65holders −5
16new positions
22sold out
3famous investors
$1.09avg. 13F price*
At the end of Q2 2025, 65 institutions reported holding Werewolf Therapeutics Inc. (HOWL) in their 13F filings, down 5 from Q1 2025. 16 opened new positions and 22 sold out. The largest holders were Ra Capital Management, L.P. ($7.3M), MPM Asset Management LLC ($4.7M) and MPM Bioimpact LLC ($2.6M). 3 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Cliff Asness (0.0% of AQR Capital Management's portfolio).
- Company
- Werewolf Therapeutics Inc.
- CUSIP
- 95075A107
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 16 | $862K |
| Exits | 22 | $1.9M |
All 13F filers, Q1 2025 → Q2 2025: 1,856,925 shares bought and 6,988,423 shares sold, net −5,131,498 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 65 holders
| Ra Capital Management, L.P. | 0.12% | Add +8.7% | 6,681,307 | $7.3M |
| MPM Asset Management LLC | 10.84% | No change | 4,309,860 | $4.7M |
| MPM Bioimpact LLC | 0.45% | No change | 2,408,810 | $2.6M |
| Bank of America Corp. | 0.00% | Add +1.2% | 2,129,024 | $2.3M |
| Vanguard Group Inc. | 0.00% | Reduce -14.0% | 1,298,251 | $1.4M |
| Millennium Management | 0.00% | Reduce -11.2% | 696,695 | $759K |
| Sphera Funds Management LTD. | 0.18% | No change | 626,810 | $683K |
| DC Funds, LP | 29.83% | No change | 589,102 | $642K |
| PFM Health Sciences, LP | 0.04% | Reduce -84.0% | 401,110 | $437K |
| Jane Street Group, LLC | 0.00% | New | 374,939 | $409K |
| BlackRock, Inc. | 0.00% | Reduce -78.3% | 361,983 | $395K |
| Geode Capital Management, LLC | 0.00% | Reduce -54.3% | 327,955 | $358K |
| Renaissance Technologies | 0.00% | Add +395.0% | 316,300 | $345K |
| Alyeska Investment Group, L.P. | 0.00% | No change | 235,705 | $257K |
| Goldman Sachs Group Inc. | 0.00% | Add +103.1% | 227,442 | $248K |
| State Street Corp. | 0.00% | Reduce -73.2% | 119,168 | $130K |
| Marshall Wace, LLP | 0.00% | New | 103,785 | $113K |
| Bridgeway Capital Management, LLC | 0.00% | Add +157.7% | 102,000 | $111K |
| AQR Capital Management | 0.00% | Add +12.9% | 92,168 | $100K |
| Y-Intercept (Hong Kong) Ltd | 0.00% | New | 84,421 | $92K |
| Susquehanna International Group, LLP | 0.00% | Add +61.3% | 79,602 | $87K |
| Northern Trust Corp. | 0.00% | Reduce -74.5% | 65,836 | $72K |
| Acadian Asset Management LLC | 0.00% | Reduce -75.6% | 61,277 | $66K |
| Two Sigma Advisers, LP | 0.00% | Reduce -26.5% | 56,600 | $62K |
| Edgewood Management LLC | 0.00% | No change | 50,000 | $55K |
| Two Sigma Investments, LP | 0.00% | Reduce -21.9% | 45,422 | $50K |
| Qube Research & Technologies Ltd | 0.00% | New | 44,261 | $48K |
| HRT Financial LP | 0.00% | New | 42,480 | $46K |
| Vontobel Holding Ltd. | 0.00% | Add +14.3% | 40,000 | $44K |
| Regal Investment Advisors LLC | 0.00% | No change | 27,204 | $30K |
| Morgan Stanley | 0.00% | Reduce -74.8% | 27,200 | $30K |
| Jain Global LLC | 0.00% | New | 26,983 | $29K |
| Quadrature Capital Ltd | 0.00% | New | 25,791 | $28K |
| Two Sigma Securities, LLC | 0.00% | New | 22,409 | $24K |
| Point72 Asia (Singapore) Pte. Ltd. | 0.00% | New | 20,126 | $22K |
| Certuity, LLC | 0.00% | No change | 15,000 | $16K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +57.3% | 14,377 | $16K |
| Barclays PLC | 0.00% | Reduce -70.8% | 13,236 | $14K |
| HBK Sorce Advisory LLC | 0.00% | Reduce -2.3% | 13,227 | $14K |
| Raymond James Financial Inc. | 0.00% | New | 13,044 | $14K |
| Jump Financial, LLC | 0.00% | New | 11,345 | $12K |
| FMR LLC | 0.00% | Add +152.9% | 11,284 | $12K |
| JPMorgan Chase & Co. | 0.00% | Reduce -31.9% | 10,898 | $12K |
| Avantax Advisory Services, Inc. | 0.00% | New | 10,200 | $11K |
| Royal Bank of Canada | 0.00% | Add +279.4% | 10,543 | $11K |
| Highline Wealth Partners LLC | 0.00% | New | 10,000 | $11K |
| Larson Financial Group LLC | 0.00% | No change | 10,000 | $11K |
| Osaic Holdings, Inc. | 0.00% | No change | 9,625 | $10K |
| Cwm, LLC | 0.00% | Add +24.5% | 8,448 | $9K |
| Financial Perspectives, Inc | 0.00% | No change | 6,750 | $7K |
| Simplex Trading, LLC | 0.00% | Add +270.3% | 6,999 | $7K |
| Federated Hermes, Inc. | 0.00% | Reduce -28.4% | 4,387 | $5K |
| BNP Paribas Financial Markets | 0.00% | Add +7.4% | 3,613 | $4K |
| UBS Group AG | 0.00% | Reduce -80.6% | 3,438 | $4K |
| TFC Financial Management, Inc. | 0.00% | No change | 2,500 | $3K |
| Nisa Investment Advisors, LLC | 0.00% | New | 1,375 | $1K |
| Rossby Financial, LCC | 0.00% | No change | 860 | $937 |
| Wells Fargo & Company | 0.00% | Reduce -97.4% | 459 | $500 |
| Point72 (DIFC) Ltd | 0.00% | New | 403 | $439 |
| Citigroup Inc. | 0.00% | Reduce -98.5% | 321 | $350 |
| EverSource Wealth Advisors, LLC | 0.00% | Add +377.1% | 167 | $182 |
| Essential Partners LLC | 0.00% | — | 52 | $57 |
| Plante Moran Financial Advisors, LLC | 0.00% | New | 50 | $55 |
| SBI Securities Co., Ltd. | 0.00% | No change | 40 | $44 |
| True Wealth Design, LLC | 0.00% | Reduce -40.9% | 13 | $15 |
"% of holder's portfolio" is HOWL's weight in each manager's 13F, not the share of Werewolf Therapeutics Inc. the manager owns.