Tourmaline BioTRML
13F holders, Q3 2025 (September 30)134holders +26
52new positions
27sold out
4famous investors
$47.83avg. 13F price*
At the end of Q3 2025, 134 institutions reported holding Tourmaline Bio Inc. (TRML) in their 13F filings, up 26 from Q2 2025. 52 opened new positions and 27 sold out. The largest holders were Avoro Capital Advisors LLC ($122.2M), QVT Financial LP ($103.1M) and BlackRock, Inc. ($72.6M). 4 famous investors held it, including Israel Englander (0.0% of Millennium Management's portfolio), Jim Simons / Peter Brown (0.0% of Renaissance Technologies's portfolio) and Mario Gabelli (0.0% of GAMCO Investors's portfolio).
- Company
- Tourmaline Bio Inc.
- CUSIP
- 89157D105
- Latest filing quarter
- Q3 2025
History
Number of 13F holders
Total Exit/New Position Q2 2025 → Q3 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 52 | $296.2M |
| Exits | 27 | $119.5M |
All 13F filers, Q2 2025 → Q3 2025: 7,064,710 shares bought and 9,502,085 shares sold, net −2,437,375 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 134 holders
| Avoro Capital Advisors LLC | 1.58% | No change | 2,555,555 | $122.2M |
| QVT Financial LP | 11.80% | No change | 2,154,653 | $103.1M |
| BlackRock, Inc. | 0.00% | Reduce -7.1% | 1,517,777 | $72.6M |
| TCG Crossover Management, LLC | 3.09% | Reduce -11.2% | 1,311,783 | $62.7M |
| Pfizer Inc | 13.91% | No change | 1,272,214 | $60.8M |
| Vanguard Group Inc. | 0.00% | Reduce -3.4% | 1,165,607 | $55.8M |
| FIL Ltd | 0.04% | New | 1,027,690 | $49.2M |
| Magnetar Financial LLC | 0.30% | New | 966,129 | $46.2M |
| Qiming U.S. Ventures Management, LLC | 63.76% | No change | 741,691 | $35.5M |
| First Trust Capital Management L.P. | 2.15% | New | 695,757 | $33.3M |
| TIG Advisors, LLC | 1.83% | New | 619,763 | $29.6M |
| Vivo Capital, LLC | 2.28% | No change | 591,882 | $28.3M |
| Alliancebernstein L.P. | 0.01% | Add +1985.6% | 539,961 | $25.8M |
| Nexpoint Asset Management, L.P. | 1.95% | New | 455,360 | $21.8M |
| Geode Capital Management, LLC | 0.00% | Reduce -2.8% | 453,952 | $21.7M |
| State Street Corp. | 0.00% | Reduce -9.5% | 415,970 | $19.9M |
| Goldman Sachs Group Inc. | 0.00% | Add +109.6% | 376,738 | $18.0M |
| AQR Arbitrage LLC | 0.63% | New | 374,785 | $17.9M |
| Acuta Capital Partners, LLC | 13.27% | Reduce -5.4% | 268,451 | $12.8M |
| Morgan Stanley | 0.00% | Reduce -30.5% | 252,093 | $12.1M |
| Nan Fung Trinity (hk) Ltd. | 1.08% | No change | 227,090 | $10.9M |
| Versor Investments LP | 1.91% | New | 217,221 | $10.4M |
| Alpine Associates Management Inc. | 0.57% | New | 196,177 | $9.4M |
| Millennium Management | 0.01% | Reduce -21.8% | 190,625 | $9.1M |
| Glazer Capital, LLC | 0.32% | New | 180,155 | $8.6M |
| UBS Group AG | 0.00% | Reduce -22.2% | 178,371 | $8.5M |
| Northern Trust Corp. | 0.00% | Reduce -6.2% | 162,540 | $7.8M |
| Charles Schwab Investment Management Inc. | 0.00% | Add +162.3% | 148,706 | $7.1M |
| Marshall Wace, LLP | 0.01% | New | 143,731 | $6.9M |
| Abc Arbitrage SA | 0.66% | New | 139,800 | $6.7M |
| Gabelli Funds LLC | 0.04% | New | 119,850 | $5.7M |
| Chicago Capital Management, LLC | 21.78% | New | 112,406 | $5.4M |
| Harvest Management LLC | 2.35% | New | 100,000 | $4.8M |
| Citadel Advisors | 0.00% | New | 95,621 | $4.6M |
| Renaissance Technologies | 0.01% | New | 91,850 | $4.4M |
| Toronto Dominion Bank | 0.01% | New | 89,200 | $4.3M |
| Bank of America Corp. | 0.00% | Reduce -33.9% | 84,140 | $4.0M |
| Dimensional Fund Advisors LP | 0.00% | Reduce -39.3% | 69,085 | $3.3M |
| Wellington Management Group LLP | 0.00% | Reduce -21.6% | 63,574 | $3.0M |
| Susquehanna International Group, LLP | 0.00% | Add +89.1% | 60,649 | $2.9M |
| Carmignac Gestion | 0.04% | New | 55,412 | $2.7M |
| HighTower Advisors, LLC | 0.00% | Add +26.1% | 53,418 | $2.6M |
| Water Island Capital LLC | 0.38% | New | 50,968 | $2.4M |
| Centiva Capital, LP | 0.22% | New | 50,000 | $2.4M |
| Bank of New York Mellon Corp | 0.00% | Reduce -11.8% | 49,964 | $2.4M |
| American Century Companies Inc. | 0.00% | Add +17.8% | 47,788 | $2.3M |
| Nuveen, LLC | 0.00% | Reduce -33.6% | 47,553 | $2.3M |
| Susquehanna Portfolio Strategies, LLC | 0.03% | Reduce -15.5% | 43,189 | $2.1M |
| Twin Securities, Inc. | 0.80% | New | 33,301 | $1.6M |
| Balyasny Asset Management L.P. | 0.00% | Reduce -94.6% | 32,567 | $1.6M |
| GABELLI & Co INVESTMENT ADVISERS, INC. | 0.24% | New | 31,050 | $1.5M |
| Invesco Ltd. | 0.00% | Add +19.3% | 30,558 | $1.5M |
| Credit Industriel Et Commercial | 0.32% | New | 29,661 | $1.4M |
| Barclays PLC | 0.00% | Reduce -37.3% | 27,801 | $1.3M |
| Prelude Capital Management, LLC | 0.10% | New | 27,282 | $1.3M |
| Rhumbline Advisers | 0.00% | Reduce -9.9% | 27,057 | $1.3M |
| Virtu Financial LLC | 0.07% | New | 26,273 | $1.3M |
| Swiss National Bank | 0.00% | No change | 22,400 | $1.1M |
| Oddo BHF Asset Management Sas | 0.04% | New | 20,810 | $995K |
| SG Americas Securities, LLC | 0.00% | Reduce -69.0% | 20,182 | $965K |
| BCK Capital Management LP | 1.00% | New | 19,471 | $931K |
| Oxford Asset Management LLP | 0.30% | New | 18,756 | $897K |
| Natixis | 0.00% | New | 18,700 | $894K |
| FORA Capital, LLC | 0.15% | New | 18,087 | $865K |
| Groupe la Francaise | 0.01% | New | 17,998 | $861K |
| Jefferies Financial Group Inc. | 0.01% | New | 17,363 | $830K |
| Jane Street Group, LLC | 0.00% | New | 16,477 | $788K |
| Weiss Asset Management LP | 0.01% | New | 16,387 | $784K |
| BBR Partners, LLC | 0.04% | No change | 15,000 | $717K |
| JPMorgan Chase & Co. | 0.00% | Reduce -8.4% | 14,291 | $684K |
| Wells Fargo & Company | 0.00% | Add +10.2% | 13,462 | $644K |
| Creative Planning | 0.00% | Add +5.5% | 13,287 | $636K |
| UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC | 0.00% | Reduce -23.2% | 12,987 | $621K |
| Franklin Resources Inc. | 0.00% | Reduce -6.6% | 12,984 | $621K |
| Deutsche Bank AG | 0.00% | Reduce -13.3% | 12,730 | $609K |
| Alps Advisors Inc. | 0.00% | Reduce -10.0% | 12,465 | $596K |
| Wolverine Asset Management LLC | 0.04% | New | 12,120 | $580K |
| Legal & General Group Plc | 0.00% | Add +47.0% | 11,784 | $564K |
| Jain Global LLC | 0.01% | New | 11,093 | $531K |
| MetLife Investment Management, LLC | 0.00% | Reduce -23.3% | 10,394 | $497K |
| California State Teachers Retirement System | 0.00% | Add +0.0% | 10,021 | $479K |
| GAMCO Investors | 0.00% | New | 10,000 | $478K |
| Skandinaviska Enskilda Banken AB (publ) | 0.00% | New | 9,921 | $475K |
| T. Rowe Price Associates Inc. | 0.00% | Reduce -13.8% | 9,280 | $444K |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | 0.00% | Reduce -22.6% | 8,063 | $386K |
| Sanctuary Advisors, LLC | 0.00% | New | 7,633 | $365K |
| AlphaQuest LLC | 0.02% | Add +215.4% | 7,323 | $350K |
| Greenland Capital Management LP | 0.05% | New | 7,032 | $336K |
| Verition Fund Management LLC | 0.00% | Reduce -82.5% | 6,985 | $334K |
| New York State Common Retirement Fund | 0.00% | No change | 6,100 | $292K |
| Janus Henderson Group PLC | 0.00% | New | 5,926 | $283K |
| Manufacturers Life Insurance Company, The | 0.00% | New | 5,848 | $280K |
| Velan Capital Investment Management LP | 0.26% | Reduce -98.5% | 5,800 | $277K |
| Virtus Investment Advisers, LLC | 0.08% | Add +21.0% | 5,718 | $273K |
| Mariner, LLC | 0.00% | New | 5,579 | $267K |
| Guggenheim Capital LLC | 0.00% | New | 5,437 | $260K |
| Police & Firemen's Retirement System of New Jersey | 0.00% | Reduce -11.2% | 4,939 | $236K |
| BNP Paribas Financial Markets | 0.00% | Add +130.2% | 4,841 | $232K |
| Point72 Asia (Singapore) Pte. Ltd. | 0.03% | New | 4,637 | $222K |
| China Universal Asset Management Co., Ltd. | 0.02% | Reduce -12.7% | 4,503 | $215K |
"% of holder's portfolio" is TRML's weight in each manager's 13F, not the share of Tourmaline Bio Inc. the manager owns.