| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| Avoro Capital Advisors LLC | 10% | $58,931,098 | 2,555,555 | Avoro Capital Advisors LLC | 30 Jun 2025 | |||
| QVT Financial LP | 8.4% | +44% | $49,686,298 | +$15,710,409 | 2,154,653 | +46% | QVT Financial LP | 30 Jun 2025 |
| BlackRock, Inc. | 5.5% | $67,527,642 | 1,411,832 | BlackRock, Inc. | 30 Sep 2025 | |||
| Blue Owl Capital Holdings LP | 4.2% | $13,621,031 | 1,079,321 | Blue Owl Capital Holdings LP | 31 Dec 2024 |
As of 30 Sep 2025, 134 institutional investors reported holding 21,618,938 shares of Tourmaline Bio, Inc. - Common stock, par value $0.0001 per share (TRML). This represents 84% of the company’s total 25,669,673 outstanding shares.
The largest institutional shareholders of Tourmaline Bio, Inc. - Common stock, par value $0.0001 per share (TRML) together control 73% of the company’s outstanding shares — a level of ownership often associated with strong institutional conviction and long‑term capital commitment.
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| Avoro Capital Advisors LLC | 10% | 2,555,555 | 0% | 1.6% | $122,232,196 |
| QVT Financial LP | 8.4% | 2,154,653 | 0% | 11% | $103,057,053 |
| BlackRock, Inc. | 5.9% | 1,517,777 | -7.1% | 0% | $72,595,275 |
| TCG Crossover Management, LLC | 5.1% | 1,311,783 | -11% | 3.1% | $62,742,581 |
| Pfizer Inc | 5% | 1,272,214 | 0% | 14% | $60,849,996 |
| VANGUARD GROUP INC | 4.5% | 1,165,607 | -3.4% | 0% | $55,750,983 |
| FIL Ltd | 4% | 1,027,690 | 0.04% | $49,154,413 | |
| Magnetar Financial LLC | 3.8% | 966,129 | 0.28% | $46,209,950 | |
| QIMING U.S. VENTURES MANAGEMENT, LLC | 2.9% | 741,691 | 0% | 64% | $35,475,081 |
| First Trust Capital Management L.P. | 2.7% | 695,757 | 2.1% | $33,278,057 | |
| TIG Advisors, LLC | 2.4% | 619,763 | 1.8% | $29,643,264 | |
| Vivo Capital, LLC | 2.3% | 591,882 | 0% | 2.3% | $28,309,716 |
| ALLIANCEBERNSTEIN L.P. | 2.1% | 539,961 | +1986% | 0.01% | $25,826,335 |
| NEXPOINT ASSET MANAGEMENT, L.P. | 1.8% | 455,360 | 1.9% | $21,779,869 | |
| GEODE CAPITAL MANAGEMENT, LLC | 1.8% | 453,952 | -2.8% | 0% | $21,716,300 |
| STATE STREET CORP | 1.6% | 415,970 | -9.5% | 0% | $19,895,845 |
| GOLDMAN SACHS GROUP INC | 1.5% | 376,738 | +110% | 0% | $18,019,379 |
| AQR Arbitrage LLC | 1.5% | 374,785 | 0.46% | $17,925,967 | |
| ACUTA CAPITAL PARTNERS, LLC | 1% | 268,451 | -5.4% | 13% | $12,840,011 |
| MORGAN STANLEY | 0.98% | 252,093 | -31% | 0% | $12,057,609 |
| NAN FUNG TRINITY (HK) LTD | 0.88% | 227,090 | 0% | 1.1% | $10,861,715 |
| Versor Investments LP | 0.85% | 217,221 | 1.9% | $10,389,680 | |
| ALPINE ASSOCIATES MANAGEMENT INC. | 0.76% | 196,177 | 0.57% | $9,383,146 | |
| MILLENNIUM MANAGEMENT LLC | 0.74% | 190,625 | -22% | 0.01% | $9,117,594 |
| GLAZER CAPITAL, LLC | 0.7% | 180,155 | 0.29% | $8,617,000 |
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2025 Q4 | 0 | $0 | -$1,096,006 | $47.98 | 0 |
| 2025 Q3 | 21,618,938 | $1,034,037,845 | +$121,144,493 | $47.83 | 134 |
| 2025 Q2 | 24,065,900 | $384,816,806 | +$2,889,811 | $15.99 | 107 |
| 2025 Q1 | 23,949,691 | $364,277,293 | +$11,366,241 | $15.21 | 107 |
| 2024 Q4 | 22,862,128 | $463,647,500 | +$8,433,550 | $20.28 | 100 |
| 2024 Q3 | 21,032,430 | $540,746,931 | +$2,040,168 | $25.71 | 90 |
| 2024 Q2 | 21,157,029 | $272,081,168 | -$49,171,054 | $12.86 | 83 |
| 2024 Q1 | 20,558,012 | $469,902,038 | +$169,163,428 | $22.90 | 97 |
| 2023 Q4 | 14,500 | $379,610 | +$379,610 | $26.18 | 1 |