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Tourmaline Bio (TRML) Institutional Ownership

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Institutional Ownership Changes (13F Filings) for Tourmaline Bio (NASDAQ:TRML)

Current
Institutional Ownership
Percentage
91.89%
Number of
Institutional Buyers
(last 12 months)
38
Total
Institutional Inflows
(last 12 months)
$183.77M
Number of
Institutional Sellers
(last 12 months)
20
Total
Institutional Outflows
(last 12 months)
$43.68M
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TRML Institutional Buying and Selling by Quarter

Tourmaline Bio Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
1/1/2026 JPMorgan Chase & Co.14,291$684K0.0%-8.4%0.056%
11/19/2025 Caitong International Asset Management Co. Ltd1,234$59K0.0%+325.5%0.005%
11/17/2025 First Trust Capital Management L.P.695,757$33.28M2.1%N/A2.708%
11/17/2025 TCG Crossover Management LLC1,311,783$62.74M3.1%-11.2%5.106%
11/17/2025 Water Island Capital LLC50,968$2.44M0.3%N/A0.198%
11/17/2025 Velan Capital Investment Management LP5,800$277K0.3%-98.5%0.023%
11/17/2025 Verition Fund Management LLC6,985$334K0.0%-82.6%0.027%
11/17/2025 Prelude Capital Management LLC27,282$1.31M0.1%N/A0.106%
11/17/2025 PenderFund Capital Management Ltd.3,000$143K0.0%N/A0.012%
11/17/2025 Mariner LLC5,579$267K0.0%N/A0.022%
11/17/2025 Millennium Management LLC190,625$9.12M0.0%-21.8%0.742%
11/17/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.8,063$386K0.0%-22.6%0.031%
11/17/2025 Jain Global LLC11,093$531K0.0%N/A0.043%
11/17/2025 Bank of America Corp DE84,140$4.02M0.0%-33.9%0.327%
11/17/2025 Alliancebernstein L.P.539,961$25.83M0.0%+1,985.6%2.102%
11/14/2025 Creative Planning13,287$636K0.0%+5.5%0.052%
11/14/2025 AQR Arbitrage LLC374,785$17.93M0.5%N/A1.459%
11/14/2025 Virtu Financial LLC26,273$1.26M0.1%N/A0.102%
11/14/2025 Twin Securities Inc.33,301$1.59M0.8%N/A0.130%
11/14/2025 Zurcher Kantonalbank Zurich Cantonalbank 2,515$120K0.0%N/A0.010%
11/14/2025 Acuta Capital Partners LLC268,451$12.84M13.3%-5.4%1.045%
11/14/2025Brooklyn Investment Group15,584$745K0.1%+198.8%0.061%
11/14/2025 UBS AM A Distinct Business Unit of UBS Asset Management Americas LLC12,987$621K0.0%-23.2%0.051%
11/14/2025 FORA Capital LLC18,087$865K0.2%N/A0.070%
11/13/2025 Marshall Wace LLP143,731$6.88M0.0%N/A0.559%
11/13/2025 UBS Group AG178,371$8.53M0.0%-22.2%0.694%
11/13/2025 BNP Paribas Financial Markets4,841$232K0.0%+130.2%0.019%
11/13/2025 Franklin Resources Inc.12,984$621K0.0%-6.6%0.051%
11/13/2025 Magnetar Financial LLC966,129$46.21M0.3%N/A3.760%
11/13/2025 Legal & General Group Plc11,784$564K0.0%+47.0%0.046%
11/13/2025 Russell Investments Group Ltd.1,579$76K0.0%N/A0.006%
11/13/2025Jefferies Financial Group Inc.17,363$830K0.0%N/A0.068%
11/12/2025 Gabelli Funds LLC119,850$5.73M0.0%N/A0.466%
11/12/2025 Gamco Investors INC. ET AL10,000$478K0.0%N/A0.039%
11/12/2025 GABELLI & Co INVESTMENT ADVISERS INC.31,050$1.49M0.2%N/A0.121%
11/12/2025 Barclays PLC27,801$1.33M0.0%-37.3%0.108%
11/12/2025 Dimensional Fund Advisors LP69,085$3.30M0.0%-39.3%0.269%
11/12/2025 Cresset Asset Management LLC8,333$399K0.0%N/A0.032%
11/12/2025 Quantbot Technologies LP1,948$93K0.0%N/A0.008%
11/10/2025 Greenland Capital Management LP7,032$336K0.0%N/A0.027%
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11/10/2025 Ameritas Investment Partners Inc.1,463$70K0.0%-35.3%0.006%
11/10/2025BCK Capital Management LP19,471$931K1.0%N/A0.076%
11/10/2025 China Universal Asset Management Co. Ltd.4,503$215K0.0%-12.7%0.018%
11/7/2025 Chicago Capital Management LLC112,406$5.38M4.8%N/A0.438%
11/7/2025 Skandinaviska Enskilda Banken AB publ 9,921$475K0.0%N/A0.039%
11/7/2025Vanguard Group Inc.1,165,607$55.75M0.0%-3.4%4.537%
11/7/2025 Credit Industriel ET Commercial29,661$1.42M0.1%N/A0.115%
11/7/2025 JPMorgan Chase & Co.14,291$684K0.0%-8.4%0.056%
11/7/2025 HighTower Advisors LLC53,418$2.56M0.0%+26.1%0.208%
11/6/2025 Alpine Associates Management Inc.196,177$9.38M0.6%N/A0.764%
11/6/2025 Rhumbline Advisers27,057$1.29M0.0%-9.9%0.105%
11/6/2025 ABC Arbitrage SA139,800$6.69M0.7%N/A0.544%
11/6/2025 Versor Investments LP217,221$10.39M1.9%N/A0.845%
11/5/2025 Alps Advisors Inc.12,465$596K0.0%-10.0%0.049%
11/3/2025 AlphaQuest LLC7,323$350K0.0%+215.4%0.029%
10/29/2025 Amalgamated Bank567$27K0.0%-29.0%0.002%
10/28/2025 Wolverine Asset Management LLC12,120$580K0.0%N/A0.047%
10/23/2025 SG Americas Securities LLC20,182$965K0.0%-69.0%0.079%
10/14/2025 Farther Finance Advisors LLC2,146$103K0.0%+114.2%0.008%
8/15/2025 Tower Research Capital LLC TRC 3,214$51K0.0%+35.7%0.013%
8/15/2025 BBR Partners LLC15,000$240K0.0%+50.0%0.058%
8/15/2025 BNP Paribas Financial Markets2,103$34K0.0%+34.1%0.008%
8/15/2025 Balyasny Asset Management L.P.604,561$9.67M0.0%+2.0%2.354%
8/15/2025 Bank of America Corp DE127,371$2.04M0.0%-46.2%0.496%
8/15/2025 Adage Capital Partners GP L.L.C.135,637$2.17M0.0%-72.9%0.528%
8/14/2025 QVT Financial LP2,154,653$34.45M3.1%+46.2%8.389%
8/14/2025 Nantahala Capital Management LLC558,187$8.93M0.4%+4.8%2.173%
8/14/2025 California State Teachers Retirement System10,020$160K0.0%-4.6%0.039%
8/14/2025 Acuta Capital Partners LLC283,682$4.54M6.3%-33.5%1.104%
8/14/2025 MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.10,421$167K0.0%-24.5%0.041%
8/14/2025 Velan Capital Investment Management LP393,889$6.30M6.2%-13.5%1.534%
8/13/2025 Invesco Ltd.25,626$410K0.0%+28.6%0.100%
8/13/2025 Virtus Investment Advisers LLC4,725$76K0.0%-35.2%0.018%
8/12/2025 American Century Companies Inc.40,564$649K0.0%+12.6%0.158%
8/12/2025 Rhumbline Advisers30,016$480K0.0%-9.1%0.117%
8/12/2025 Legal & General Group Plc8,017$128K0.0%-48.1%0.031%
8/12/2025 JPMorgan Chase & Co.15,599$249K0.0%-60.7%0.061%
8/8/2025 Creative Planning12,592$201K0.0%N/A0.049%
8/8/2025 SG Americas Securities LLC65,156$1.04M0.0%+80.1%0.254%
8/8/2025 Geode Capital Management LLC467,087$7.47M0.0%-5.9%1.819%
8/8/2025 Nan Fung Trinity HK Ltd.227,090$3.63M0.4%N/A0.884%
8/1/2025 Y Intercept Hong Kong Ltd22,056$353K0.0%N/A0.086%
7/31/2025 AlphaQuest LLC2,322$37K0.0%-15.6%0.009%
7/7/2025 Wesbanco Bank Inc.26,000$416K0.0%N/A0.101%
6/27/2025 Goldman Sachs Group Inc.82,919$1.26M0.0%-21.1%0.323%
5/29/2025Rhumbline Advisers33,033$502K0.0%-7.2%0.129%
5/16/2025Woodline Partners LP160,086$2.44M0.0%-1.0%0.623%
5/16/2025Octagon Capital Advisors LP905,000$13.77M1.5%N/A3.523%
5/16/2025Goldman Sachs Group Inc.82,919$1.26M0.0%-21.1%0.323%
5/16/2025Millennium Management LLC268,738$4.09M0.0%-26.3%1.046%
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5/16/2025Adage Capital Partners GP L.L.C.500,000$7.61M0.0%-16.7%1.947%
5/15/2025Nantahala Capital Management LLC532,824$8.10M0.3%-0.8%2.074%
5/15/2025QVT Financial LP1,473,369$22.41M2.1%+107.1%5.736%
5/15/2025Velan Capital Investment Management LP455,412$6.93M7.1%+7.5%1.773%
5/14/2025Jump Financial LLC20,893$318K0.0%N/A0.081%
5/14/2025AlphaQuest LLC2,752$42K0.0%-23.9%0.011%
5/14/2025EntryPoint Capital LLC24,972$380K0.2%N/A0.097%
5/14/2025Hsbc Holdings PLC10,357$158K0.0%N/A0.040%
5/14/2025Wellington Management Group LLP74,739$1.14M0.0%+9.0%0.291%
5/13/2025Brooklyn Investment Group3,923$60K0.0%+148.9%0.015%


TRML Institutional Ownership - Frequently Asked Questions

During the previous two years, 117 institutional investors and hedge funds held shares of Tourmaline Bio. The most heavily invested institutionals were TCG Crossover Management LLC ($62.74M), Vanguard Group Inc. ($55.75M), Magnetar Financial LLC ($46.21M), QVT Financial LP ($34.45M), First Trust Capital Management L.P. ($33.28M), Alliancebernstein L.P. ($25.83M), and Blue Owl Capital Holdings LP ($21.89M).Learn more on Tourmaline Bio's institutional investors.

91.89% of Tourmaline Bio's stock is owned by institutional investors. Learn more on TRML's institutional investor holdings.

Of the 94 institutional investors that purchased Tourmaline Bio's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: QVT Financial LP ($1.44M), Magnetar Financial LLC ($966.13K), Octagon Capital Advisors LP ($905K), First Trust Capital Management L.P. ($695.76K), Adage Capital Partners GP L.L.C. ($600K), Alliancebernstein L.P. ($517.75K), and AQR Arbitrage LLC ($374.79K).

Institutional investors have bought a total of 3,842,233 shares in the last 24 months. This purchase volume represents approximately $183.77M in transactions.

Of the 20 institutional investors that sold Tourmaline Bio's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Velan Capital Investment Management LP ($388.09K), TCG Crossover Management LLC ($165.81K), Millennium Management LLC ($53.25K), UBS Group AG ($51.03K), SG Americas Securities LLC ($44.97K), Dimensional Fund Advisors LP ($44.81K), and Bank of America Corp DE ($43.23K).

Institutional investors have sold a total of 913,273 shares in the last 24 months. This volume of shares sold represents approximately $43.68M in transactions.


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Institutional ownership data for NASDAQ:TRML is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 1/1/2026. New 13F filings are added each quarter as they're published.
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