HOWL — WEREWOLF THERAPEUTICS INC
As of Q2 2026, 13 SEC-registered investment managers reported holding HOWL (WEREWOLF THERAPEUTICS INC) in their latest 13F filings, with a combined reported value of $1.34M across 3.74M shares. That is +127.4% by share count (+2.09M shares) versus the previous quarter, while reported value moved -1.7%. Ownership is concentrated: the five largest holders account for 89.0% of reported value and the top ten for 98.9%.
Compared with the prior quarter, 3 opened new positions, 4 added to existing stakes, 4 trimmed, 2 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.
HOWL is classified in the Health Care sector.
All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.
| Fund | Quarter | Shares | Value | Portfolio Weight | Change |
|---|---|---|---|---|---|
| Vanguard Group history | Q4 2025 | 1.41M | $892.70K | 0.00% | Hold |
| Balyasny Asset Management history | Q2 2026 | 1.79M | $644.25K | 0.00% | New |
| Janus Henderson Group history | Q2 2024 | 167.99K | $406.53K | 0.00% | Reduce |
| Royce & Associates history | Q2 2024 | 125.48K | $306.18K | 0.00% | Add |
| Renaissance Technologies history | Q2 2026 | 674.63K | $242.80K | 0.00% | Add |
| Manulife Financial history | Q4 2021 | 12.83K | $153.00K | 0.00% | New |
| Geode Capital Management history | Q2 2026 | 335.81K | $120.89K | 0.00% | Reduce |
| Marshall Wace history | Q2 2025 | 103.78K | $113.12K | 0.00% | New |
| Bank of America Corp history | Q2 2026 | 311.50K | $111.83K | 0.00% | Add |
| Deutsche Bank AG history | Q1 2025 | 101.63K | $98.58K | 0.00% | Hold |
| Charles Schwab Investment Management history | Q1 2025 | 95.71K | $93.05K | 0.00% | Add |
| UBS Group AG history | Q2 2026 | 215.84K | $77.70K | 0.00% | Add |
| BNY Mellon history | Q1 2025 | 62.41K | $60.67K | 0.00% | Reduce |
| Prudential Financial history | Q4 2023 | 15.40K | $59.44K | 0.00% | Hold |
| BlackRock Inc history | Q2 2026 | 101.57K | $36.56K | 0.00% | Hold |
| AQR Capital Management history | Q3 2025 | 17.81K | $35.08K | 0.00% | Reduce |
| Citadel Advisors history | Q2 2026 | 90.50K | $32.57K | 0.00% | Add |
| Northern Trust Corp history | Q2 2026 | 86.85K | $31.26K | 0.00% | Hold |
| D. E. Shaw & Co history | Q4 2024 | 17.78K | $26.31K | 0.00% | New |
| Millennium Management history | Q2 2026 | 62.05K | $22.33K | 0.00% | Reduce |
New Positions (Q2 2026)
- Balyasny Asset Management 1.79M sh · $644.25K
- Two Sigma Investments 27.30K sh · $9.82K
- JPMorgan Chase & Co 2.11K sh · $650
Fully Exited (vs previous quarter)
- Citigroup Inc sold 3.38K sh · $2.82K
- Fidelity Management & Research (FMR) sold 39 sh · $32
Fund Position History — shares by quarter (top 20 funds)
| Fund | Q3 2021 | Q4 2021 | Q1 2022 | Q2 2022 | Q3 2022 | Q4 2022 | Q1 2023 | Q2 2023 | Q3 2023 | Q4 2023 | Q1 2024 | Q2 2024 | Q3 2024 | Q4 2024 | Q1 2025 | Q2 2025 | Q3 2025 | Q4 2025 | Q1 2026 | Q2 2026 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Balyasny Asset Management | — | — | — | — | — | — | — | — | — | — | 23.05K | 10.46K | — | — | — | — | — | — | — | 1.79M |
| Renaissance Technologies | — | — | — | 16.80K | 18.30K | 78.22K | 34.10K | 42.90K | 45.20K | 107.51K | 84.20K | 171.00K | 152.20K | 56.90K | 63.90K | 316.30K | 456.00K | 677.77K | 516.22K | 674.63K |
| Geode Capital Management | 136.47K | 214.22K | 288.31K | 79.28K | 120.29K | 129.83K | 129.83K | 165.31K | 174.25K | 194.31K | 259.68K | 645.30K | 685.99K | 702.56K | 717.52K | 327.95K | 330.79K | 335.89K | 389.49K | 335.81K |
| Bank of America Corp | 619 | 28.27K | 22.32K | 2.69K | 3.48K | 1.53M | 1.53M | 1.53M | 1.53M | 2.10M | 1.88M | 2.15M | 2.15M | 2.08M | 2.10M | 2.13M | 1.83M | 737.55K | 264.58K | 311.50K |
| UBS Group AG | 1.64K | 9.46K | 2.10K | 4.26K | 2.45K | 1.45K | 1.00K | 1.00K | 1.00K | 1.00K | 37 | 9.81K | 15.48K | 30.49K | 17.69K | 3.44K | 12.78K | 60.71K | 66.86K | 215.84K |
| BlackRock Inc | — | — | — | — | — | — | — | — | — | — | — | — | 1.64M | 1.70M | 1.67M | 361.98K | 101.32K | 101.64K | 101.61K | 101.57K |
| Citadel Advisors | — | — | 20.14K | — | — | 12.73K | — | — | — | 25.32K | 12.77K | 66.85K | 12.71K | 16.00K | 13.90K | — | 154.53K | — | 10.38K | 90.50K |
| Northern Trust Corp | 70.40K | 200.06K | 195.07K | 13.82K | 18.55K | 18.44K | 19.91K | 26.07K | 26.07K | 49.65K | 48.50K | 58.60K | 227.75K | 244.39K | 258.46K | 65.84K | 65.84K | 86.85K | 86.85K | 86.85K |
| Millennium Management | — | — | 42.40K | 248.92K | 511.61K | 838.30K | 1.10M | 859.25K | 466.62K | 444.36K | 565.42K | 1.11M | 1.32M | 596.29K | 784.62K | 696.70K | 317.05K | 240.11K | 132.05K | 62.05K |
| Two Sigma Investments | — | 22.03K | 15.18K | — | — | 27.18K | 25.84K | 16.54K | — | 146.74K | 185.06K | 219.37K | 180.61K | 93.44K | 58.13K | 45.42K | 20.14K | — | — | 27.30K |
| Goldman Sachs Group | — | 10.08K | 11.65K | 10.98K | — | — | — | — | — | — | 172.79K | 52.09K | 115.14K | 141.83K | 111.98K | 227.44K | 60.34K | 34.07K | 38.27K | 20.02K |
| Morgan Stanley | 1.51K | 8.06K | 7.63K | 22.29K | 10.49K | 2.51K | 2.50K | 2.50K | 2.50K | 600 | 20.58K | 49.01K | 119.04K | 138.14K | 107.83K | 27.20K | 19.25K | 46.00K | 33.80K | 19.11K |
| JPMorgan Chase & Co | 3.85K | 28.06K | 15.63K | 3.70K | 1.50K | 748 | 748 | 748 | 748 | 83 | 71.18K | 13.07K | 13.32K | 62.93K | 16.01K | 10.90K | 1.12K | 2.07K | — | 2.11K |
| Point72 Asset Management | — | — | — | — | — | — | — | — | — | — | — | 371.68K | 109.82K | — | — | — | — | 14.48K | — | — |
| Fidelity Management & Research (FMR) | 238.50K | 370.73K | 518.63K | 518.77K | 337.07K | — | 2.10K | 2.10K | — | — | — | 3 | 1.51K | 1.83K | 4.46K | 11.28K | 11.28K | 3.63K | 39 | — |
| AQR Capital Management | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 81.67K | 92.17K | 17.81K | — | — | — |
| Citigroup Inc | 867 | 7.92K | 2.68K | 736 | 427 | 74 | — | — | — | — | 71.56K | 6.79K | 23.01K | 23.73K | 21.91K | 321 | 8.66K | 1 | 3.38K | — |
| Vanguard Group | 170.26K | 527.54K | 522.09K | 396.07K | 435.26K | 448.93K | 463.91K | 463.91K | 547.65K | 873.44K | 1.11M | 1.32M | 1.42M | 1.42M | 1.51M | 1.30M | 1.41M | 1.41M | — | — |
| Deutsche Bank AG | 4.35K | 16.05K | 14.35K | — | — | — | — | — | — | — | — | — | 18.45K | 101.63K | 101.63K | — | — | — | — | — |
| BNY Mellon | 29.79K | 64.78K | 68.34K | — | — | — | — | — | — | — | — | 67.64K | 57.93K | 71.30K | 62.41K | — | — | — | — | — |
▲ Bought Low (fund opened/added, stock rose ≥5% next quarter) ▼ Sold High (fund reduced, stock fell ≥5% next quarter)
Drag / scroll to zoom · Default shows the most recent year · Annotations come from quarterly fund actions in 13F filings · Hover a marker for details