Werewolf Therapeutics, Inc.
HOWL- Exchange
- Nasdaq
- Industry
- Pharmaceutical Preparations
- SEC CIK
- 0001785530
In the last 90 days, Werewolf Therapeutics, Inc. insiders filed 0 open-market purchases and 2 sales; 45 institutions reported holding it in 13F filings for Q2 2026, worth $3.91M in total; no superinvestor holds it.
13F holders, Q2 2026
Institutional positions in Werewolf Therapeutics, Inc. as of Jun 30, 2026. Investment managers with $100 million or more in US stocks report their long positions on Form 13F within 45 days after each quarter ends. How 13F works
- Institutional holders
- 45
- −3 vs. Q1 2026
- Shares held
- 10.9M
- −3.14M (−22.4%) vs. Q1 2026
- Total value
- $3.91M
- −$7.74M (−66.4%) vs. Q1 2026
- New holders
- 9
- 9 more added
- Sold out
- 12
- 9 more reduced
Compare with Q1 2026: new holders, sold out and not filed yet
Holders and value by quarter
Institutions reporting HOWL on Form 13F each quarter since Q1 2021, and the total value they reported. Values are as of each quarter end, so they also move with the share price.
| Quarter | Holders | Value |
|---|---|---|
| Q2 2026 | 45 | $3.91M |
| Q1 2026 | 48 | $11.7M |
| Q4 2025 | 51 | $9.34M |
| Q3 2025 | 62 | $41.6M |
| Q2 2025 | 65 | $24.3M |
| Q1 2025 | 70 | $26.7M |
| Q4 2024 | 73 | $41.7M |
| Q3 2024 | 69 | $68.3M |
| Q2 2024 | 71 | $79.3M |
| Q1 2024 | 61 | $209.7M |
| Q4 2023 | 41 | $106.8M |
| Q3 2023 | 35 | $51.1M |
| Q2 2023 | 36 | $73.3M |
| Q1 2023 | 38 | $62.5M |
| Q4 2022 | 39 | $42.8M |
| Q3 2022 | 44 | $94.5M |
| Q2 2022 | 46 | $78.0M |
| Q1 2022 | 49 | $84.3M |
| Q4 2021 | 51 | $228.4M |
| Q3 2021 | 42 | $326.2M |
| Q2 2021 | 45 | $344.3M |
| Q1 2021 | 0 | $0 |
Institutions, Q2 2026
Shares, value and share of portfolio for each institution holding Werewolf Therapeutics, Inc.; share changes are against Q1 2026.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Optiver Holding B.V. | 22 | $8 | 0.00% | 00.0% | Unchanged |
| SBI Securities Co., Ltd. | 100 | $36 | 0.00% | +20+25.0% | Added |
| Simplex Trading, LLC | 255 | $91 | 0.00% | −32,271−99.2% | Reduced |
| BNP Paribas Arbitrage, SA | 790 | $284 | 0.00% | 00.0% | Unchanged |
| JPMorgan Chase & Co | 2,108 | $650 | 0.00% | +12+0.6% | Added |
| Group One Trading, L.P. | 1,871 | $673 | 0.00% | 00.0% | Unchanged |
| Financial Perspectives, Inc | 6,750 | $2.43K | 0.00% | 00.0% | Unchanged |
| Advisor Group Holdings, Inc. | 8,625 | $3.10K | 0.00% | 00.0% | Unchanged |
| Tower Research Capital LLC (TRC) | 9,897 | $3.56K | 0.00% | +9,897 | New |
| Cetera Investment Advisers | 10,200 | $3.67K | 0.00% | 00.0% | Unchanged |
| Marest Capital, LLC | 10,870 | $3.91K | 0.00% | +10,870 | New |
| Pacitti Group Inc. | 11,000 | $3.96K | 0.00% | −1,000−8.3% | Reduced |
| LPL Financial LLC | 11,791 | $4.24K | 0.00% | +1,791+17.9% | Added |
| Larson Financial Group LLC | 13,052 | $4.70K | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 13,235 | $4.76K | 0.00% | 00.0% | Unchanged |
| HBK Sorce Advisory LLC | 13,227 | $5.32K | 0.00% | 00.0% | Unchanged |
| Camden Capital, LLC | 15,000 | $5.40K | 0.00% | 00.0% | Unchanged |
| Morgan Stanley | 19,108 | $6.88K | 0.00% | −14,691−43.5% | Reduced |
| Goldman Sachs Group Inc | 20,023 | $7.21K | 0.00% | −18,243−47.7% | Reduced |
| StoneX Group Inc. | 20,000 | $9.00K | 0.00% | +20,000 | New |
| Two Sigma Investments, LP | 27,300 | $9.82K | 0.00% | +27,300 | New |
| Gsa Capital Partners LLP | 27,146 | $10.0K | 0.00% | +27,146 | New |
| Virtu Financial LLC | 45,467 | $16.0K | 0.00% | +45,467 | New |
| Millennium Management LLC | 62,055 | $22.3K | 0.00% | −69,995−53.0% | Reduced |
| MPM Oncology Impact Management LP | 80,142 | $28.9K | 0.00% | −1,128,668−93.4% | Reduced |
| Alyeska Investment Group, L.P. | 86,554 | $31.2K | 0.00% | 00.0% | Unchanged |
| Northern Trust Corp | 86,851 | $31.3K | 0.00% | 00.0% | Unchanged |
| Rangeley Capital, LLC | 100,000 | $36.0K | 0.03% | +100,000 | New |
| BlackRock, Inc. | 101,573 | $36.6K | 0.00% | −350.0% | Reduced |
| Squarepoint Ops LLC | 103,242 | $37.2K | 0.00% | +103,242 | New |
| State Street Corp | 119,168 | $42.9K | 0.00% | 00.0% | Unchanged |
| Vanguard Fiduciary Trust Co | 157,726 | $56.8K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 215,838 | $77.7K | 0.00% | +148,981+222.8% | Added |
| Jane Street Group, LLC | 251,837 | $90.6K | 0.00% | +169,001+204.0% | Added |
| XTX Topco Ltd | 271,478 | $97.7K | 0.00% | +220,549+433.1% | Added |
| Bank of America Corp | 311,502 | $111.8K | 0.00% | +46,919+17.7% | Added |
| Geode Capital Management, LLC | 335,815 | $120.9K | 0.00% | −53,672−13.8% | Reduced |
| Verdad Advisers, LP | 348,709 | $125.5K | 0.12% | +318,949+1,071.7% | Added |
| DC Funds, LP | 589,102 | $212.0K | 16.92% | 00.0% | Unchanged |
| Sphera Funds Management Ltd. | 626,810 | $225.6K | 0.03% | 00.0% | Unchanged |
| Lynx1 Capital Management LP | 657,786 | $236.7K | 0.03% | 00.0% | Unchanged |
| Renaissance Technologies LLC | 674,632 | $242.8K | 0.00% | +158,414+30.7% | Added |
| Vanguard Capital Management LLC | 1,217,976 | $438.5K | 0.00% | 00.0% | Unchanged |
| Balyasny Asset Management LLC | 1,790,089 | $644.3K | 0.00% | +1,790,089 | New |
| Ra Capital Management, L.P. | 2,387,744 | $859.3K | 0.01% | −4,293,563−64.3% | Reduced |
| Squadron Capital Management LLC | 0 | $0 | 0.00% | −563,535−100.0% | Sold out |
| Bridgeway Capital Management, LLC | 0 | $0 | 0.00% | −77,000−100.0% | Sold out |
| Raymond James Financial Inc | 0 | $0 | 0.00% | −19,778−100.0% | Sold out |
| HRT Financial LP | 0 | $0 | 0.00% | −17,861−100.0% | Sold out |
| Delta Investment Management, LLC | 0 | $0 | 0.00% | −14,925−100.0% | Sold out |
| Citadel Advisors LLC | 0 | $0 | 0.00% | −10,382−100.0% | Sold out |
| Vanguard Global Advisers, LLC | 0 | $0 | 0.00% | −10,343−100.0% | Sold out |
| TFC Financial Management | 0 | $0 | 0.00% | −4,500−100.0% | Sold out |
| Citigroup Inc | 0 | $0 | 0.00% | −3,384−100.0% | Sold out |
| Northwestern Mutual Wealth Management Co | 0 | $0 | 0.00% | −200−100.0% | Sold out |
| FMR LLC | 0 | $0 | 0.00% | −39−100.0% | Sold out |
| SRS Capital Advisors, Inc. | 0 | $0 | 0.00% | −12−100.0% | Sold out |