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Gossamer Bio (GOSS) Institutional Ownership

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$0.15 -0.02 (-9.45%)
Closing price 04:00 PM Eastern
Extended Trading
$0.16 +0.00 (+1.17%)
As of 07:59 PM Eastern
Extended trading is trading that happens on electronic markets outside of regular trading hours. This is a fair market value extended hours price provided by Massive. Learn more.
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Institutional Ownership Changes (13F Filings) for Gossamer Bio (NASDAQ:GOSS)

Current
Institutional Ownership
Percentage
81.23%
Number of
Institutional Buyers
(last 12 months)
95
Total
Institutional Inflows
(last 12 months)
$118.00M
Number of
Institutional Sellers
(last 12 months)
40
Total
Institutional Outflows
(last 12 months)
$49.73M
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GOSS Institutional Buying and Selling by Quarter

Gossamer Bio Major Shareholders & Ownership History

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Reporting DateMajor Shareholder NameShares HeldMarket Value% of PortfolioQuarterly Change in SharesOwnership in CompanyDetails
8/14/2026ADAR1 Capital Management LLC212,531$35K0.0%N/A0.091%
8/14/2026Hsbc Holdings PLC1,583,118$267K0.0%N/A0.675%
8/12/2026 Ieq Capital LLC591,254$97K0.0%N/A0.252%
8/7/2026 BlackRock Inc.7,669,943$1.26M0.0%N/A3.268%
8/7/2026 Deutsche Bank AG1,106,441$188K0.0%N/A0.471%
8/6/2026 GSA Capital Partners LLP14,986,947$2.47M0.2%N/A6.386%
7/9/2026 Hennion & Walsh Asset Management Inc.1,098,914$181K0.0%+32.6%0.468%
5/19/2026Bank of America Corp DE3,173,725$1.04M0.0%+66.5%1.352%
5/18/2026ADAR1 Capital Management LLC287,531$94K0.0%-233.4%0.123%
5/18/2026Rock Springs Capital Management LP1,609,492$529K0.0%-87.5%0.686%
5/16/2026Kalehua Capital Management LLC10,236,293$3.36M2.4%N/A4.361%
5/15/2026Octagon Capital Advisors LP7,750,000$2.55M0.3%-44.3%3.302%
5/14/2026 Renaissance Technologies LLC1,217,868$400K0.0%+84.8%0.519%
5/5/2026 MB Generational Wealth LLC1,532,142$503K0.3%-4.6%0.653%
4/30/2026Hsbc Holdings PLC113,943$38K0.0%N/A0.049%
4/16/2026 SG Americas Securities LLC128,568$42K0.0%+73.4%0.055%
3/17/2026 Rockefeller Capital Management L.P.60,866$189K0.0%+496.7%0.026%
3/9/2026 Corient Private Wealth LLC3,845,885$11.92M0.0%+19,123.7%1.662%
2/19/2026Invesco Ltd.478,909$1.49M0.0%+36.0%0.207%
2/19/2026 Corient Private Wealth LLC3,845,885$11.92M0.0%+19,123.7%1.662%
2/18/2026 Mercer Global Advisors Inc. ADV23,983$74K0.0%+52.3%0.010%
2/18/2026Beacon Pointe Advisors LLC11,000$34K0.0%N/A0.005%
2/18/2026XTX Topco Ltd456,329$1.42M0.0%+66.1%0.197%
2/18/2026VARCOV Co.83,868$260K0.1%N/A0.036%
2/18/2026 Virtus Investment Advisers LLC73,896$229K0.1%N/A0.032%
2/18/2026Wellington Management Group LLP601,323$1.86M0.0%-6.3%0.260%
2/18/2026Susquehanna Portfolio Strategies LLC111,350$345K0.0%+489.2%0.048%
2/18/2026Opaleye Management Inc.2,720,000$8.43M1.1%-0.2%1.175%
2/18/2026Perceptive Advisors LLC3,139,669$9.73M0.2%-17.7%1.356%
2/18/2026Millennium Management LLC3,584,288$11.11M0.0%-1.0%1.549%
2/18/2026Engineers Gate Manager LP51,129$158K0.0%N/A0.022%
2/18/2026Balyasny Asset Management L.P.1,516,691$4.70M0.0%+96.8%0.655%
2/18/2026Bridgeway Capital Management LLC176,000$546K0.0%-47.6%0.076%
2/17/2026AQR Capital Management LLC1,119,240$3.47M0.0%+73.1%0.484%
2/17/2026 Cetera Investment Advisers34,249$106K0.0%N/A0.015%
2/17/2026Lazard Asset Management LLC56,668$176K0.0%+35.9%0.024%
2/17/2026Jain Global LLC278,189$862K0.0%-73.6%0.120%
2/17/2026Price T Rowe Associates Inc. MD113,138$351K0.0%+12.4%0.049%
2/17/2026Integral Health Asset Management LLC1,000,000$3.10M0.2%N/A0.432%
2/17/2026 Russell Investments Group Ltd.171,071$530K0.0%-75.0%0.074%
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2/17/2026Atom Investors LP205,639$637K0.1%+55.1%0.089%
2/17/2026State of Wisconsin Investment Board26,304$82K0.0%N/A0.011%
2/17/2026Mangrove Partners IM LLC30,747$95K0.0%N/A0.013%
2/17/2026Graham Capital Management L.P.36,467$113K0.0%-45.9%0.016%
2/16/2026Squarepoint Ops LLC221,591$687K0.0%N/A0.096%
2/16/2026 Panagora Asset Management Inc.147,296$457K0.0%+392.6%0.064%
2/16/2026 Mariner LLC64,450$200K0.0%+186.8%0.028%
2/16/2026Barclays PLC576,533$1.79M0.0%+112.2%0.249%
2/13/2026The Manufacturers Life Insurance Company 58,441$181K0.0%-10.6%0.025%
2/13/2026 Walleye Capital LLC1,077,032$3.34M0.0%+97.4%0.465%
2/13/2026Hudson Bay Capital Management LP14,180$44K0.0%N/A0.006%
2/13/2026Jacobs Levy Equity Management Inc.2,178,033$6.75M0.0%+54.7%0.941%
2/13/2026Rafferty Asset Management LLC312,804$970K0.0%N/A0.135%
2/13/2026Alyeska Investment Group L.P.909,087$2.82M0.0%-52.4%0.393%
2/13/2026Charles Schwab Investment Management Inc.1,685,778$5.23M0.0%-2.5%0.728%
2/13/2026 State Street Corp9,310,969$28.86M0.0%+139.7%4.023%
2/13/2026 Ieq Capital LLC11,211$35K0.0%N/A0.005%
2/13/2026 Caitong International Asset Management Co. Ltd26,408$82K0.2%+22.1%0.011%
2/13/2026Wells Fargo & Company MN361,921$1.12M0.0%+210.2%0.156%
2/13/2026 Platinum Investment Management Ltd.561,951$1.74M0.4%-26.5%0.243%
2/12/2026HRT Financial LP956,879$2.97M0.0%N/A0.413%
2/12/2026MetLife Investment Management LLC85,645$266K0.0%-15.6%0.037%
2/12/2026Cibc World Markets Corp12,712$39K0.0%N/A0.005%
2/12/2026 Commonwealth Equity Services LLC78,756$244K0.0%+84.6%0.034%
2/12/2026 Renaissance Technologies LLC658,888$2.04M0.0%-77.9%0.285%
2/12/2026 EntryPoint Capital LLC105,085$326K0.1%+105.0%0.045%
2/12/2026Vickerman Investment Advisors Inc.34,787$108K0.0%N/A0.015%
2/12/2026 Nuveen LLC308,522$956K0.0%-71.4%0.133%
2/11/2026 Janney Montgomery Scott LLC12,700$39K0.0%N/A0.005%
2/11/2026 Deutsche Bank AG1,284,335$3.98M0.0%+0.4%0.555%
2/11/2026Cerity Partners LLC31,914$99K0.0%+39.7%0.014%
2/11/2026 O Shaughnessy Asset Management LLC13,107$41K0.0%N/A0.006%
2/10/2026Goldman Sachs Group Inc.1,792,114$5.56M0.0%+498.2%0.774%
2/10/2026 AXQ Capital LP63,117$196K0.0%+36.1%0.027%
2/10/2026 Monaco Asset Management SAM309,211$959K0.2%-77.6%0.134%
2/10/2026 Intech Investment Management LLC85,582$265K0.0%-15.1%0.037%
2/9/2026 Eaton Financial Holdings Company LLC14,199$44K0.0%N/A0.006%
2/9/2026 Geode Capital Management LLC4,872,714$15.11M0.0%+3.9%2.105%
2/6/2026 ProShare Advisors LLC45,338$141K0.0%+39.6%0.020%
2/6/2026 HighTower Advisors LLC66,494$206K0.0%+241.0%0.029%
2/5/2026 Soltis Investment Advisors LLC10,099$31K0.0%N/A0.004%
2/3/2026 Sequoia Financial Advisors LLC88,467$274K0.0%-24.7%0.038%
2/3/2026 MMA Asset Management LLC10,000$31K0.0%N/A0.004%
2/2/2026 Oppenheimer & Co. Inc.37,500$116K0.0%N/A0.016%
1/29/2026 China Universal Asset Management Co. Ltd.47,716$148K0.0%N/A0.021%
1/26/2026 Merit Financial Group LLC155,178$481K0.0%+15.2%0.067%
1/26/2026 Mirae Asset Global Investments Co. Ltd.11,247$35K0.0%N/A0.005%
1/26/2026CWM LLC33,957$105K0.0%+35.7%0.015%
1/23/2026 Choreo LLC75,111$234K0.0%-11.7%0.032%
1/14/2026 Hennion & Walsh Asset Management Inc.652,977$2.02M0.1%N/A0.282%
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1/9/2026 SG Americas Securities LLC74,129$230K0.0%+249.7%0.032%
1/8/2026 Wealth Enhancement Advisory Services LLC23,964$74K0.0%+24.8%0.010%
1/8/2026 NorthCrest Asset Manangement LLC11,484$36K0.0%N/A0.005%
1/1/2026 JPMorgan Chase & Co.194,369$511K0.0%+114.9%0.084%
1/1/2026Tudor Investment Corp ET AL50,103$132K0.0%+7.8%0.022%
12/9/2025Tudor Investment Corp ET AL50,103$132K0.0%+7.8%0.022%
11/21/2025 CIBC Bancorp USA Inc.20,246$53K0.0%N/A0.009%
11/19/2025 Caitong International Asset Management Co. Ltd21,637$57K0.0%N/A0.009%
11/17/2025Jacobs Levy Equity Management Inc.1,408,118$3.70M0.0%+29.0%0.608%
11/17/2025XTX Topco Ltd274,782$723K0.0%+177.6%0.119%


GOSS Institutional Ownership - Frequently Asked Questions

During the previous two years, 148 institutional investors and hedge funds held shares of Gossamer Bio. The most heavily invested institutionals were Vanguard Group Inc. ($31.59M), State Street Corp ($28.86M), NEA Management Company LLC ($16.30M), Geode Capital Management LLC ($15.11M), Palo Alto Investors LP ($14.37M), Corient Private Wealth LLC ($11.92M), and Millennium Management LLC ($11.11M).Learn more on Gossamer Bio's institutional investors.

81.23% of Gossamer Bio's stock is owned by institutional investors. Learn more on GOSS's institutional investor holdings.

Of the 126 institutional investors that purchased Gossamer Bio's stock in the last 24 months, the following investors and hedge funds have bought the highest volume of shares: GSA Capital Partners LLP ($15.05M), Kalehua Capital Management LLC ($10.24M), Octagon Capital Advisors LP ($9.16M), Corient Private Wealth LLC ($8.26M), BlackRock Inc. ($7.67M), State Street Corp ($5.43M), and Bank of America Corp DE ($4.13M).

Institutional investors have bought a total of 77,351,979 shares in the last 24 months. This purchase volume represents approximately $118.00M in transactions.

Of the 40 institutional investors that sold Gossamer Bio's stock in the last 24 months, the following investors and hedge funds have sold the highest volume of shares: Rock Springs Capital Management LP ($11.23M), Octagon Capital Advisors LP ($6.17M), Alyeska Investment Group L.P. ($3.55M), Monaco Asset Management SAM ($3.24M), Renaissance Technologies LLC ($2.32M), Platinum Investment Management Ltd. ($821.91K), and Jain Global LLC ($776.17K).

Institutional investors have sold a total of 32,960,702 shares in the last 24 months. This volume of shares sold represents approximately $49.73M in transactions.


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Institutional ownership data for NASDAQ:GOSS is compiled from quarterly 13F filings submitted to the U.S. Securities and Exchange Commission (SEC), with the most recent received on 8/14/2026. New 13F filings are added each quarter as they're published.
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