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Gossamer Bio GOSS · USD

Health Care · US listing · 🇺🇸 United States

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10.65

+9.01%

Close of 9 Nov 2026, in USD

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Reference data, closing prices and charts across 45,000 companies, plus crypto, commodities and currencies.

Largest shareholders

As filed, so dates differ, and a group and its funds can both appear.

HolderSharesStakeChangeFiled
BlackRock Institutional Trust Company, N.A.14.4m505.84%+1.9m31 Dec 2025
Octagon Capital Advisors LP13.9m487.15%−3.1m31 Dec 2025
The Vanguard Group, Inc.12.9m450.67%+863.4k31 Dec 2025
State Street Investment Management (US)9.3m325.96%+5.4m31 Dec 2025
ARCH Venture Partners8.1m282.02%—31 Dec 2025
683 Capital Management LLC8m280.06%+2.8m23 Feb 2026
Samsara BioCapital, LLC7.2m252.85%+1.1m31 Dec 2025
Two Sigma Investments, LP6m210.79%+1.8m31 Dec 2025
Invus Public Equities Advisors, LLC5.2m182.36%—31 Dec 2025
HHLR Advisors, Ltd.5m174.13%—31 Dec 2025
Geode Capital Management, L.L.C.4.9m170.58%+183.2k31 Dec 2025
Palo Alto Investors LP4.5m156.54%−992.8k31 Dec 2025
Acadian Asset Management LLC4.4m154.63%−596.1k31 Dec 2025
Fidelity Management & Research Company LLC4.2m148.35%+152.2k31 Dec 2025
Corient Private Wealth LLC3.8m134.64%+3.8m31 Dec 2025

Short interest

Shares sold short, 15 Oct 2026. US exchange data.

1.4m

+16.0% on the period before. 5.1 days to cover.

Short volume

Share of the day's trading sold short, 5 Nov 2026

47.8%

Last 60 trading days.

Failed deliveries

Shares not delivered on settlement, from the SEC

  • 28 Sept 2026133 shares
  • 25 Sept 202617 shares
  • 24 Sept 20262 shares
  • 23 Sept 20261,752 shares
  • 22 Sept 20269,943 shares

Sources and methodology

Data on this tab
Our data supplier
Chart on the Overview
TradingView

Nothing here is investment advice. Prices can be delayed or wrong, so check with the exchange before relying on them. Data for this page. How we cover markets.