HOWL WEREWOLF THERAPEUTICS INC
FollowCMN (common), issuer CIK 1785530
44 managers (45 13F filers) reported a position in HOWL shares at 2026-06-30, 10,864,466 shares in all. 9 filers opened a position and 12 filers sold out during the quarter.
- Managers
- 44
- 13F filers
- 45
- New
- 9
- Added
- 9
- Reduced
- 9
- Sold out
- 12
- Shares held by filers
- 10,864,466
Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.
13D and 13G filers
No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.
Insider trades
No Form 4 transaction on this security in the data.
13F holders, Q2 2026
Filers in the available 13F reports with a share position at 2026-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.
| Holder | Shares | Value | % of portfolio | Change | Source |
|---|---|---|---|---|---|
| RA CAPITAL MANAGEMENT, L.P.in group RA CAPITAL MANAGEMENT, L.P. | 2,387,744 | $859K | 0.01% | -4,293,563 | 13F-HRTimelineGroup |
| Balyasny Asset Management L.P.in group Balyasny Asset Management | 1,790,089 | $644K | <0.01% | new | 13F-HRTimelineGroup |
| VANGUARD GROUP INCgroup of 3 filers holding | 1,375,702 | $495K | -10,343 | Timeline
| |
| RENAISSANCE TECHNOLOGIES LLC | 674,632 | $243K | <0.01% | +158,414 | 13F-HRTimeline |
| Lynx1 Capital Management LPin group Lynx1 Capital Management LP | 657,786 | $237K | 0.03% | 0 | 13F-HR/ATimelineGroup |
| SPHERA FUNDS MANAGEMENT LTD.in group SPHERA FUNDS MANAGEMENT LTD. | 626,810 | $226K | 0.03% | 0 | 13F-HRTimelineGroup |
| DC Funds, LP | 589,102 | $212K | 16.92% | 0 | 13F-HRTimeline |
| Verdad Advisers, LP | 348,709 | $126K | 0.12% | +318,949 | 13F-HRTimeline |
| GEODE CAPITAL MANAGEMENT, LLCin group GEODE CAPITAL MANAGEMENT, LLC | 335,815 | $121K | <0.01% | -53,672 | 13F-HRTimelineGroup |
| BANK OF AMERICA CORP /DE/in group BANK OF AMERICA CORP /DE/ | 311,502 | $112K | <0.01% | +46,919 | 13F-HRTimelineGroup |
| XTX Topco Ltdin group XTX Topco Ltd | 271,478 | $97.7K | <0.01% | +220,549 | 13F-HRTimelineGroup |
| JANE STREET GROUP, LLCin group JANE STREET GROUP, LLC | 251,837 | $90.6K | <0.01% | +169,001 | 13F-HRTimelineGroup |
| UBS Group AGin group UBS Group AG | 215,838 | $77.7K | <0.01% | +148,981 | 13F-HRTimelineGroup |
| STATE STREET CORPin group STATE STREET CORP | 119,168 | $42.9K | <0.01% | 0 | 13F-HRTimelineGroup |
| Squarepoint Ops LLCin group Squarepoint Ops LLC | 103,242 | $37.2K | <0.01% | new | 13F-HRTimelineGroup |
| BlackRock, Inc.in group BlackRock, Inc. | 101,573 | $36.6K | <0.01% | -35 | 13F-HRTimelineGroup |
| Rangeley Capital, LLC | 100,000 | $36K | 0.03% | new | 13F-HRTimeline |
| NORTHERN TRUST CORPin group NORTHERN TRUST CORP | 86,851 | $31.3K | <0.01% | 0 | 13F-HRTimelineGroup |
| Alyeska Investment Group, L.P.in group Alyeska Investment Group, L.P. | 86,554 | $31.2K | <0.01% | 0 | 13F-HRTimelineGroup |
| MPM BIOIMPACT LLC | 80,142 | $28.9K | <0.01% | -1,128,668 | 13F-HRTimeline |
| MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC | 62,055 | $22.3K | <0.01% | -69,995 | 13F-HRTimelineGroup |
| Virtu Financial LLCin group Virtu Financial LLC | 45,467 | $16K | <0.01% | new | 13F-HRTimelineGroup |
| GSA CAPITAL PARTNERS LLP | 27,146 | $10K | <0.01% | new | 13F-HRTimeline |
| TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP | 27,300 | $9.82K | <0.01% | new | 13F-HRTimelineGroup |
| StoneX Group Inc.in group StoneX Group Inc. | 20,000 | $9K | <0.01% | new | 13F-HRTimelineGroup |
| GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC | 20,023 | $7.21K | <0.01% | -18,243 | 13F-HRTimelineGroup |
| MORGAN STANLEYin group MORGAN STANLEY | 19,108 | $6.88K | <0.01% | -14,691 | 13F-HRTimelineGroup |
| CERTUITY, LLC | 15,000 | $5.4K | <0.01% | 0 | 13F-HRTimeline |
| HBK Sorce Advisory LLC | 13,227 | $5.32K | <0.01% | 0 | 13F-HRTimeline |
| BARCLAYS PLCin group BARCLAYS PLC | 13,235 | $4.76K | <0.01% | 0 | 13F-HRTimelineGroup |
| Larson Financial Group LLC | 13,052 | $4.7K | <0.01% | 0 | 13F-HRTimeline |
| LPL Financial LLC | 11,791 | $4.24K | <0.01% | +1,791 | 13F-HRTimeline |
| Ranch Capital Advisors Inc. | 11,000 | $3.96K | <0.01% | -1,000 | 13F-HRTimeline |
| Marest Capital, LLC | 10,870 | $3.91K | <0.01% | new | 13F-HRTimeline |
| Cetera Investment Advisers | 10,200 | $3.67K | <0.01% | 0 | 13F-HRTimeline |
| Tower Research Capital LLC (TRC)in group Tower Research Capital LLC (T… | 9,897 | $3.56K | <0.01% | new | 13F-HRTimelineGroup |
| OSAIC HOLDINGS, INC.in group OSAIC HOLDINGS, INC. | 8,625 | $3.1K | <0.01% | 0 | 13F-HRTimelineGroup |
| Financial Perspectives, Inc | 6,750 | $2.43K | <0.01% | 0 | 13F-HRTimeline |
| GROUP ONE TRADING LLC | 1,871 | $673 | <0.01% | 0 | 13F-HRTimeline |
| JPMORGAN CHASE & COin group JPMORGAN CHASE & CO | 2,108 | $650 | <0.01% | +12 | 13F-HRTimelineGroup |
| BNP PARIBAS FINANCIAL MARKETSin group BNP PARIBAS FINANCIAL MARKETS | 790 | $284 | <0.01% | 0 | 13F-HRTimelineGroup |
| SIMPLEX TRADING, LLC | 255 | $91 | <0.01% | -32,271 | 13F-HRTimeline |
| SBI Securities Co., Ltd. | 100 | $36 | <0.01% | +20 | 13F-HRTimeline |
| Optiver Holding B.V.in group Optiver Holding B.V. | 22 | $8 | <0.01% | 0 | 13F-HRTimelineGroup |