Tourmaline BioTRML
13F holders, Q1 2025 (March 31)107holders +6
18new positions
12sold out
2famous investors
$15.21avg. 13F price*
At the end of Q1 2025, 107 institutions reported holding Tourmaline Bio Inc. (TRML) in their 13F filings, up 6 from Q4 2024. 18 opened new positions and 12 sold out. The largest holders were Ra Capital Management, L.P. ($38.6M), Avoro Capital Advisors LLC ($36.9M) and BlackRock, Inc. ($27.3M). 2 famous investors held it, including Ken Griffin (0.0% of Citadel Advisors's portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Tourmaline Bio Inc.
- CUSIP
- 89157D105
- Latest filing quarter
- Q3 2025
History
Number of 13F holders
Total Exit/New Position Q4 2024 → Q1 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 18 | $25.0M |
| Exits | 12 | $20.7M |
All 13F filers, Q4 2024 → Q1 2025: 3,629,982 shares bought and 2,543,796 shares sold, net +1,086,186 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 107 holders
| Ra Capital Management, L.P. | 0.65% | No change | 2,538,925 | $38.6M |
| Avoro Capital Advisors LLC | 0.58% | Add +9.1% | 2,425,000 | $36.9M |
| BlackRock, Inc. | 0.00% | Reduce -0.7% | 1,792,208 | $27.3M |
| TCG Crossover Management, LLC | 3.07% | No change | 1,477,593 | $22.5M |
| QVT Financial LP | 2.30% | Add +107.1% | 1,473,369 | $22.4M |
| Pfizer Inc | 3.86% | No change | 1,272,214 | $19.4M |
| Vanguard Group Inc. | 0.00% | Add +7.7% | 1,190,810 | $18.1M |
| Blue Owl Capital Holdings LP | 5.10% | Reduce -3.9% | 1,037,107 | $15.8M |
| Octagon Capital Advisors LP | 2.99% | New | 905,000 | $13.8M |
| Qiming U.S. Ventures Management, LLC | 48.83% | No change | 741,691 | $11.3M |
| Balyasny Asset Management L.P. | 0.02% | New | 592,975 | $9.0M |
| Vivo Capital, LLC | 1.19% | No change | 591,882 | $9.0M |
| Citadel Advisors | 0.01% | Reduce -12.0% | 570,588 | $8.7M |
| Nantahala Capital Management, LLC | 0.67% | Reduce -0.8% | 532,824 | $8.1M |
| Adage Capital Partners Gp, L.L.C. | 0.01% | Reduce -16.7% | 500,000 | $7.6M |
| Geode Capital Management, LLC | 0.00% | Add +3.0% | 496,120 | $7.5M |
| Velan Capital Investment Management LP | 7.13% | Add +7.5% | 455,412 | $6.9M |
| State Street Corp. | 0.00% | Reduce -43.9% | 449,161 | $6.8M |
| Acuta Capital Partners, LLC | 7.53% | Add +21.3% | 426,882 | $6.5M |
| Pictet Asset Management Holding SA | 0.01% | No change | 419,883 | $6.4M |
| Schonfeld Strategic Advisors LLC | 0.03% | Add +0.5% | 299,739 | $4.6M |
| Morgan Stanley | 0.00% | Add +39.9% | 285,745 | $4.3M |
| Millennium Management | 0.00% | Reduce -26.3% | 268,738 | $4.1M |
| FMR LLC | 0.00% | Add +586.8% | 243,721 | $3.7M |
| Bank of America Corp. | 0.00% | Add +234.7% | 236,747 | $3.6M |
| Nan Fung Group Holdings Ltd | 2.82% | Add +21.4% | 227,090 | $3.5M |
| UBS Group AG | 0.00% | Add +18.2% | 223,683 | $3.4M |
| Northern Trust Corp. | 0.00% | Reduce -1.1% | 202,582 | $3.1M |
| Woodline Partners LP | 0.02% | Reduce -1.0% | 160,086 | $2.4M |
| Federated Hermes, Inc. | 0.00% | Add +13036.0% | 121,245 | $1.8M |
| Jennison Associates LLC | 0.00% | Reduce -86.0% | 118,487 | $1.8M |
| Alyeska Investment Group, L.P. | 0.01% | No change | 115,053 | $1.7M |
| Marshall Wace, LLP | 0.00% | Reduce -14.6% | 99,166 | $1.5M |
| Siren, L.L.C. | 0.08% | No change | 91,426 | $1.4M |
| Polymer Capital Management (HK) LTD | 0.23% | Add +9.5% | 86,934 | $1.3M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -21.1% | 82,919 | $1.3M |
| Nuveen, LLC | 0.00% | — | 77,607 | $1.2M |
| Wellington Management Group LLP | 0.00% | Add +8.9% | 74,739 | $1.1M |
| Ikarian Capital, LLC | 0.34% | No change | 67,927 | $1.0M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +2.8% | 65,850 | $1.0M |
| Wexford Capital LP | 0.25% | Add +208.6% | 63,610 | $968K |
| Bank of New York Mellon Corp | 0.00% | Reduce -0.9% | 60,720 | $924K |
| HighTower Advisors, LLC | 0.00% | No change | 53,418 | $812K |
| Susquehanna International Group, LLP | 0.00% | Add +259.7% | 48,584 | $739K |
| Brown Advisory Inc. | 0.00% | No change | 39,719 | $604K |
| JPMorgan Chase & Co. | 0.00% | Add +170.0% | 39,700 | $604K |
| Two Sigma Investments, LP | 0.00% | Add +70.9% | 36,643 | $557K |
| SG Americas Securities, LLC | 0.00% | Add +3.9% | 36,180 | $550K |
| American Century Companies Inc. | 0.00% | Add +54.2% | 36,018 | $548K |
| Rhumbline Advisers | 0.00% | Reduce -7.2% | 33,033 | $502K |
| Barclays PLC | 0.00% | Reduce -45.7% | 31,795 | $484K |
| EntryPoint Capital, LLC | 0.17% | New | 24,972 | $380K |
| Swiss National Bank | 0.00% | Add +11.4% | 22,400 | $341K |
| Jump Financial, LLC | 0.00% | New | 20,893 | $318K |
| Invesco Ltd. | 0.00% | Add +63.9% | 19,920 | $303K |
| Boothbay Fund Management, LLC | 0.01% | No change | 19,559 | $297K |
| State of Wisconsin Investment Board | 0.00% | Add +6.3% | 18,922 | $288K |
| Deutsche Bank AG | 0.00% | Reduce -10.0% | 18,011 | $274K |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) | 0.01% | New | 17,860 | $272K |
| Alps Advisors Inc. | 0.00% | Reduce -15.6% | 17,501 | $266K |
| Citigroup Inc. | 0.00% | Reduce -45.1% | 17,012 | $259K |
| Legal & General Group Plc | 0.00% | No change | 15,443 | $235K |
| Caption Management, LLC | 0.01% | New | 14,312 | $218K |
| Franklin Resources Inc. | 0.00% | New | 13,892 | $211K |
| Wells Fargo & Company | 0.00% | Add +2.3% | 13,854 | $211K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -4.0% | 13,800 | $210K |
| MetLife Investment Management, LLC | 0.00% | Reduce -2.4% | 13,553 | $206K |
| Alliancebernstein L.P. | 0.00% | No change | 12,950 | $197K |
| Susquehanna Fundamental Investments, LLC | 0.00% | Reduce -46.2% | 12,402 | $189K |
| Two Sigma Advisers, LP | 0.00% | New | 12,219 | $186K |
| Corebridge Financial, Inc. | 0.00% | Reduce -1.5% | 11,309 | $172K |
| Intech Investment Management LLC | 0.00% | Add +3.6% | 10,583 | $161K |
| California State Teachers Retirement System | 0.00% | No change | 10,505 | $160K |
| HSBC Holdings PLC | 0.00% | New | 10,357 | $158K |
| T. Rowe Price Associates Inc. | 0.00% | New | 10,243 | $156K |
| BBR Partners, LLC | 0.01% | New | 10,000 | $152K |
| Virtus Investment Advisers, LLC | 0.03% | New | 7,289 | $111K |
| New York State Common Retirement Fund | 0.00% | Reduce -34.4% | 6,100 | $93K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | No change | 5,564 | $85K |
| China Universal Asset Management Co., Ltd. | 0.01% | Reduce -5.4% | 5,143 | $78K |
| Brooklyn Investment Group | 0.01% | Add +148.9% | 3,923 | $60K |
| AlphaQuest LLC | 0.00% | Reduce -23.9% | 2,752 | $42K |
| Tower Research Capital LLC (TRC) | 0.00% | Add +43.9% | 2,368 | $36K |
| KLP Kapitalforvaltning As | 0.00% | No change | 2,300 | $35K |
| Ameritas Investment Partners, Inc. | 0.00% | No change | 2,262 | $34K |
| Nisa Investment Advisors, LLC | 0.00% | Add +1761.2% | 1,582 | $24K |
| BNP Paribas Financial Markets | 0.00% | Reduce -53.5% | 1,568 | $24K |
| Farther Finance Advisors, LLC | 0.00% | New | 1,659 | $24K |
| Royal Bank of Canada | 0.00% | Reduce -54.2% | 1,482 | $23K |
| Mirae Asset Global Investments Co., Ltd. | 0.00% | Add +2.9% | 879 | $15K |
| Amalgamated Bank | 0.00% | No change | 799 | $12K |
| GF Fund Management Co. LTD. | 0.00% | Add +21.9% | 656 | $10K |
| Versant Capital Management, Inc | 0.00% | New | 600 | $9K |
| GAMMA Investing LLC | 0.00% | Add +201.2% | 494 | $8K |
| Sterling Capital Management LLC | 0.00% | Reduce -46.2% | 398 | $6K |
| Osaic Holdings, Inc. | 0.00% | No change | 250 | $4K |
| Caitong International Asset Management Co., Ltd | 0.00% | New | 121 | $2K |
| Jones Financial Companies LLLP | 0.00% | New | 100 | $2K |
| US Bancorp \de | 0.00% | Reduce -20.2% | 79 | $1K |
| Daiwa Securities Group Inc. | 0.00% | No change | 95 | $1K |
"% of holder's portfolio" is TRML's weight in each manager's 13F, not the share of Tourmaline Bio Inc. the manager owns.