WEREWOLF THERAPEUTICS INC (HOWL) Institutional Ownership Changes & 13F Activity
WEREWOLF THERAPEUTICS INC (HOWL). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q2 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Ra Capital Management, L.P., Balyasny Asset Management L.P., Mpm Bioimpact Llc, Squadron Capital Management Llc, and Verdad Advisers, Lp.
| Institution | Type | Change in shares | Change Position % | Shares | Reported stock balance | Portfolio quarter | Filing date |
|---|---|---|---|---|---|---|---|
| Ra Capital Management, L.P. | Sell | -4,293,563 | -64.3% | 2,387,744 | $859.35K | Q2 2026 | Aug 14, 2026 |
| Balyasny Asset Management L.P. | Buy | +1,790,089 | — | 1,790,089 | $644.25K | Q2 2026 | Aug 14, 2026 |
| Mpm Bioimpact Llc | Sell | -1,128,668 | -93.4% | 80,142 | $28.85K | Q2 2026 | Aug 14, 2026 |
| Verdad Advisers, Lp | Buy | +318,949 | +1071.7% | 348,709 | $125.50K | Q2 2026 | Aug 14, 2026 |
| Xtx Topco Ltd | Buy | +220,549 | +433.1% | 271,478 | $97.70K | Q2 2026 | Aug 14, 2026 |
| Jane Street Group, Llc | Buy | +169,001 | +204.0% | 251,837 | $90.64K | Q2 2026 | Aug 14, 2026 |
| Squarepoint Ops Llc | Buy | +103,242 | — | 103,242 | $37.16K | Q2 2026 | Aug 14, 2026 |
| Rangeley Capital, Llc | Buy | +100,000 | — | 100,000 | $35.99K | Q2 2026 | Aug 14, 2026 |
| Millennium Management Llc | Sell | -69,995 | -53.0% | 62,055 | $22.33K | Q2 2026 | Aug 14, 2026 |
| Bank Of America Corp | Buy | +46,919 | +17.7% | 311,502 | $111.83K | Q2 2026 | Aug 14, 2026 |
| Two Sigma Investments, Lp | Buy | +27,300 | — | 27,300 | $9.82K | Q2 2026 | Aug 14, 2026 |
| Goldman Sachs Group Inc | Sell | -18,243 | -47.7% | 20,023 | $7.21K | Q2 2026 | Aug 14, 2026 |
| Renaissance Technologies LLC | Buy | +158,414 | +30.7% | 674,632 | $242.80K | Q2 2026 | Aug 13, 2026 |
| Ubs Group Ag | Buy | +148,981 | +222.8% | 215,838 | $77.70K | Q2 2026 | Aug 13, 2026 |
| Virtu Financial Llc | Buy | +45,467 | — | 45,467 | $16.00K | Q2 2026 | Aug 13, 2026 |
| Morgan Stanley | Sell | -14,691 | -43.5% | 19,108 | $6.88K | Q2 2026 | Aug 13, 2026 |
| Geode Capital Management, Llc | Sell | -53,672 | -13.8% | 335,815 | $120.89K | Q2 2026 | Aug 12, 2026 |
| Simplex Trading, Llc | Sell | -32,271 | -99.2% | 255 | $91.00 | Q2 2026 | Aug 12, 2026 |
| Stonex Group Inc. | Buy | +20,000 | — | 20,000 | $9.00K | Q2 2026 | Aug 12, 2026 |
| Jpmorgan Chase & Co | Buy | +2,108 | — | 2,108 | $650.00 | Q2 2026 | Aug 12, 2026 |
| Tower Research Capital Llc (Trc) | Buy | +9,897 | — | 9,897 | $3.56K | Q2 2026 | Aug 11, 2026 |
| Lpl Financial Llc | Buy | +1,791 | +17.9% | 11,791 | $4.24K | Q2 2026 | Aug 07, 2026 |
| Blackrock, Inc. | Sell | -35 | -0.0% | 101,573 | $36.56K | Q2 2026 | Aug 07, 2026 |
| Gsa Capital Partners Llp | Buy | +27,146 | — | 27,146 | $10.00K | Q2 2026 | Aug 06, 2026 |
| Marest Capital, Llc | Buy | +10,870 | — | 10,870 | $3.91K | Q2 2026 | Aug 05, 2026 |
| Ranch Capital Advisors Inc. | Sell | -1,000 | -8.3% | 11,000 | $3.96K | Q2 2026 | Aug 03, 2026 |
| Sbi Securities Co., Ltd. | Buy | +20 | +25.0% | 100 | $36.00 | Q2 2026 | Jul 23, 2026 |
| Squadron Capital Management Llc | Sell | -563,535 | -100.0% | 0 | $0.00 | Q2 2026 | May 15, 2026 |
| Bridgeway Capital Management, Llc | Sell | -77,000 | -100.0% | 0 | $0.00 | Q2 2026 | May 15, 2026 |
| Citadel Advisors Llc | Sell | -10,382 | -100.0% | 0 | $0.00 | Q2 2026 | May 15, 2026 |
Frequently asked questions about HOWL activity
Which institutional owners are buying HOWL?
Institutional owners buying HOWL include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.
What does "buy" mean in HOWL activity?
"Buy" means an investor increased their reported position in HOWL compared to the prior reporting period. This reflects growing exposure to WEREWOLF THERAPEUTICS INC (HOWL) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).
Is institutional interest in HOWL increasing?
Institutional interest in HOWL can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.
Related HOWL Institutional Insights
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