GOSSAMER BIO INC (GOSS) Institutional Ownership Changes & 13F Activity

GOSSAMER BIO INC (GOSS). Institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC Form 13F filings (Q4 2025). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions in the latest reporting period. Notable filers include Nea Management Company, Llc, Octagon Capital Advisors Lp, Arch Venture Management, Llc, Samsara Biocapital, Llc, and 683 Capital Management, Llc.

InstitutionTypeChange in sharesChange Position %SharesReported stock balancePortfolio quarterFiling date
Neuberger Berman Group LlcBuy+12,558—12,558$38.93KQ4 2025Oct 27, 2026
Cornerstone Financial Management LlcBuy+282—282$874.00Q4 2025Aug 28, 2026
Algert Global LlcBuy+332,336—332,336$1.03MQ4 2025Aug 11, 2026
Corient Private Wealth LlcBuy+3,845,885—3,845,885$11.92MQ4 2025Feb 19, 2026
Mackenzie Financial CorpBuy+306,453—306,453$954.25KQ4 2025Feb 18, 2026
Mercer Global Advisors IncBuy+23,983—23,983$74.35KQ4 2025Feb 18, 2026
Beacon Pointe Advisors, LlcBuy+11,000—11,000$34.10KQ4 2025Feb 18, 2026
Nea Management Company, LlcBuy+18,093,034—18,093,034$56.09MQ4 2025Feb 17, 2026
Octagon Capital Advisors LpBuy+13,915,371—13,915,371$43.14MQ4 2025Feb 17, 2026
Arch Venture Management, LlcBuy+8,055,916—8,055,916$24.97MQ4 2025Feb 17, 2026
Samsara Biocapital, LlcBuy+7,222,559—7,222,559$22.39MQ4 2025Feb 17, 2026
683 Capital Management, LlcBuy+5,190,800—5,190,800$16.09MQ4 2025Feb 17, 2026
Hhlr Advisors, Ltd.Buy+4,974,041—4,974,041$15.42MQ4 2025Feb 17, 2026
Palo Alto Investors LpBuy+4,471,592—4,471,592$13.86MQ4 2025Feb 17, 2026
Fmr LlcBuy+4,237,590—4,237,590$13.14MQ4 2025Feb 17, 2026
Millennium Management LlcBuy+3,584,288—3,584,288$11.11MQ4 2025Feb 17, 2026
Two Sigma Investments, LpBuy+3,397,110—3,397,110$10.53MQ4 2025Feb 17, 2026
Rock Springs Capital Management LpBuy+3,266,960—3,266,960$10.13MQ4 2025Feb 17, 2026
Perceptive Advisors LlcBuy+3,139,669—3,139,669$9.73MQ4 2025Feb 17, 2026
Opaleye Management Inc.Buy+2,720,000—2,720,000$8.43MQ4 2025Feb 17, 2026
Two Sigma Advisers, LpBuy+2,596,900—2,596,900$8.05MQ4 2025Feb 17, 2026
Bank Of America CorpBuy+1,906,669—1,906,669$5.91MQ4 2025Feb 17, 2026
Balyasny Asset Management L.P.Buy+1,516,691—1,516,691$4.70MQ4 2025Feb 17, 2026
Northern Trust CorpBuy+1,416,540—1,416,540$4.39MQ4 2025Feb 17, 2026
Aqr Capital Management LlcBuy+1,119,240—1,119,240$3.47MQ4 2025Feb 17, 2026
Integral Health Asset Management, LlcBuy+1,000,000—1,000,000$3.10MQ4 2025Feb 17, 2026
Citadel Advisors LlcBuy+704,787—704,787$2.18MQ4 2025Feb 17, 2026
Wellington Management Group LlpBuy+601,323—601,323$1.86MQ4 2025Feb 17, 2026
Qube Research & Technologies LtdBuy+540,567—540,567$1.68MQ4 2025Feb 17, 2026
Silverback Asset Management LlcBuy+500,000—500,000$1.55MQ4 2025Feb 17, 2026
Showing 30 of 189

Frequently asked questions about GOSS activity

  • Which institutional owners are buying GOSS?

    Institutional owners buying GOSS include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in GOSS activity?

    "Buy" means an investor increased their reported position in GOSS compared to the prior reporting period. This reflects growing exposure to GOSSAMER BIO INC (GOSS) rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in GOSS increasing?

    Institutional interest in GOSS can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.

Related GOSS Institutional Insights