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, Q1 2026
Institutional positions in Werewolf Therapeutics, Inc. as of Mar 31, 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
- 48
- −2 vs. Q4 2025
- Shares held
- 14.0M
- +672.7K (+5.0%) vs. Q4 2025
- Total value
- $11.7M
- +$3.21M (+38.0%) vs. Q4 2025
- New holders
- 10
- 9 more added
- Sold out
- 12
- 12 more reduced
1 institution that held it in Q4 2025 haven't filed for Q1 2026 yet. Not filing isn't selling, so they aren't counted as sold out or in the changes above.
Compare with Q4 2025: 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, Q1 2026
Shares, value and share of portfolio for each institution holding Werewolf Therapeutics, Inc.; share changes are against Q4 2025.
| Institution | Shares | Value | % of portfolio | Change in shares | Action |
|---|---|---|---|---|---|
| Ra Capital Management, L.P. | 6,681,307 | $5.56M | 0.06% | 00.0% | Unchanged |
| Vanguard Capital Management LLC | 1,217,976 | $1.01M | 0.00% | +1,217,976 | New |
| MPM Oncology Impact Management LP | 1,208,810 | $1.01M | 0.08% | −184,747−13.3% | Reduced |
| Lynx1 Capital Management LP | 657,786 | $547.7K | 0.09% | +1,860+0.3% | Added |
| Sphera Funds Management Ltd. | 626,810 | $521.9K | 0.09% | 00.0% | Unchanged |
| DC Funds, LP | 589,102 | $490.5K | 33.01% | 00.0% | Unchanged |
| Squadron Capital Management LLC | 563,535 | $469.2K | 0.19% | +563,535 | New |
| Renaissance Technologies LLC | 516,218 | $429.8K | 0.00% | −161,548−23.8% | Reduced |
| Geode Capital Management, LLC | 389,487 | $324.4K | 0.00% | +53,601+16.0% | Added |
| Bank of America Corp | 264,583 | $220.1K | 0.00% | −472,967−64.1% | Reduced |
| Vanguard Fiduciary Trust Co | 157,726 | $131.4K | 0.00% | +157,726 | New |
| Millennium Management LLC | 132,050 | $109.9K | 0.00% | −108,059−45.0% | Reduced |
| State Street Corp | 119,168 | $99.2K | 0.00% | 00.0% | Unchanged |
| BlackRock, Inc. | 101,608 | $84.6K | 0.00% | −350.0% | Reduced |
| Northern Trust Corp | 86,851 | $72.3K | 0.00% | 00.0% | Unchanged |
| Alyeska Investment Group, L.P. | 86,554 | $72.1K | 0.00% | −149,151−63.3% | Reduced |
| Jane Street Group, LLC | 82,836 | $69.0K | 0.00% | −74,486−47.3% | Reduced |
| Bridgeway Capital Management, LLC | 77,000 | $64.1K | 0.00% | 00.0% | Unchanged |
| UBS Group AG | 66,857 | $55.7K | 0.00% | +6,149+10.1% | Added |
| XTX Topco Ltd | 50,929 | $42.4K | 0.00% | +50,929 | New |
| Goldman Sachs Group Inc | 38,266 | $31.9K | 0.00% | +4,193+12.3% | Added |
| Morgan Stanley | 33,799 | $28.1K | 0.00% | −12,203−26.5% | Reduced |
| Simplex Trading, LLC | 32,526 | $27.1K | 0.00% | +8,472+35.2% | Added |
| Verdad Advisers, LP | 29,760 | $24.8K | 0.03% | +29,760 | New |
| Raymond James Financial Inc | 19,778 | $16.5K | 0.00% | +19,778 | New |
| HRT Financial LP | 17,861 | $14.0K | 0.00% | +17,861 | New |
| Camden Capital, LLC | 15,000 | $12.5K | 0.00% | 00.0% | Unchanged |
| Delta Investment Management, LLC | 14,925 | $12.4K | 0.00% | 00.0% | Unchanged |
| Barclays PLC | 13,235 | $11.0K | 0.00% | −10.0% | Reduced |
| Larson Financial Group LLC | 13,052 | $10.9K | 0.00% | 00.0% | Unchanged |
| Pacitti Group Inc. | 12,000 | $9.99K | 0.00% | 00.0% | Unchanged |
| HBK Sorce Advisory LLC | 13,227 | $8.99K | 0.00% | 00.0% | Unchanged |
| Citadel Advisors LLC | 10,382 | $8.64K | 0.00% | +10,382 | New |
| Vanguard Global Advisers, LLC | 10,343 | $8.62K | 0.00% | +10,343 | New |
| Cetera Investment Advisers | 10,200 | $8.49K | 0.00% | 00.0% | Unchanged |
| LPL Financial LLC | 10,000 | $8.33K | 0.00% | +10,000 | New |
| Advisor Group Holdings, Inc. | 8,625 | $7.16K | 0.00% | 00.0% | Unchanged |
| Financial Perspectives, Inc | 6,750 | $5.62K | 0.00% | 00.0% | Unchanged |
| TFC Financial Management | 4,500 | $3.75K | 0.00% | 00.0% | Unchanged |
| Citigroup Inc | 3,384 | $2.82K | 0.00% | +3,383+338,300.0% | Added |
| JPMorgan Chase & Co | 2,096 | $1.67K | 0.00% | +24+1.2% | Added |
| Group One Trading, L.P. | 1,871 | $1.56K | 0.00% | 00.0% | Unchanged |
| BNP Paribas Arbitrage, SA | 790 | $658 | 0.00% | −2−0.3% | Reduced |
| Northwestern Mutual Wealth Management Co | 200 | $167 | 0.00% | +196+4,900.0% | Added |
| SBI Securities Co., Ltd. | 80 | $67 | 0.00% | +40+100.0% | Added |
| FMR LLC | 39 | $32 | 0.00% | −3,592−98.9% | Reduced |
| SRS Capital Advisors, Inc. | 12 | $32 | 0.00% | −27−69.2% | Reduced |
| Optiver Holding B.V. | 22 | $18 | 0.00% | 00.0% | Unchanged |
| Susquehanna International Group, LLP | 0 | $0 | 0.00% | −99,829−100.0% | Sold out |
| Vontobel Holding Ltd. | 0 | $0 | 0.00% | −60,003−100.0% | Sold out |
| Regal Investment Advisors LLC | 0 | $0 | 0.00% | −52,593−100.0% | Sold out |
| Edgewood Management LLC | 0 | $0 | 0.00% | −50,000−100.0% | Sold out |
| Point72 Asset Management, L.P. | 0 | $0 | 0.00% | −14,483−100.0% | Sold out |
| Engineers Gate Manager LP | 0 | $0 | 0.00% | −12,185−100.0% | Sold out |
| Highline Wealth Partners LLC | 0 | $0 | 0.00% | −12,000−100.0% | Sold out |
| StoneX Group Inc. | 0 | $0 | 0.00% | −10,511−100.0% | Sold out |
| Two Sigma Advisers, LP | 0 | $0 | 0.00% | −10,300−100.0% | Sold out |
| Federated Hermes, Inc. | 0 | $0 | 0.00% | −4,387−100.0% | Sold out |
| Nisa Investment Advisors, LLC | 0 | $0 | 0.00% | −345−100.0% | Sold out |
| Royal Bank of Canada | 0 | $0 | 0.00% | −62−100.0% | Sold out |
| Vanguard Group Inc | – | – | – | – | Not filed |