13F

Stock

Gossamer Bio, Inc.

GOSS · held by 193 managers

Reported value

$134.1M

Holders

193

+41 new · −59 exited

Holders’ est. mark

−$319.3M

Price effect on 146 books still in the name

Largest holder

$20M

Context Capital Management, LLC

Notable conviction

Share of each notable manager’s 13F book.

Holder count by quarter

Who holds it

Notable only
InvestorSharesValueEst. markChange
Context Capital Management, LLC48.8M$20M−$9MCut−$2.72M
D. E. Shaw & Co., Inc.30.7M$12.2M−$9.1MCut−$9.03M
683 Capital Management, LLC32.9M$12.2M−$14.2MCut−$3.86M
DeepCurrents Investment Group LLC29.9M$11.8M−$7.68MCut−$6.89M
WOLVERINE ASSET MANAGEMENT LLC22M$8.67M−$6.27MCut−$6.27M
Worth Venture Partners, LLC15.8M$6.47MNew
UBS Group AG16.3M$6.4M−$8.79MCut−$9.21M
BlackRock, Inc.16.8M$5.53M−$46.6MCut−$47.3M
Kalehua Capital Management LLC10.2M$3.36MNew
Icahn Capital10.1M$3.33M−$3.1MCut−$143K
VANGUARD CAPITAL MANAGEMENT LLC9.39M$3.09MHeld
ARCH Venture Management, LLC8.06M$2.65M−$22.3MCut−$22.3M
Octagon Capital Advisors LP7.75M$2.55M−$21.5MCut−$40.6M
SAMSARA BIOCAPITAL, LLC7.22M$2.37M−$20MCut−$20M
HIGHBRIDGE CAPITAL MANAGEMENT LLC6M$2.35M−$896.3KAdded$281.3K
Balyasny Asset Management L.P.5.92M$1.95M−$4.2MCut−$2.76M
Siren, L.L.C.5.21M$1.71M−$14.4MCut−$14.4M
HHLR ADVISORS, LTD.4.97M$1.63M−$13.8MCut−$13.8M
GEODE CAPITAL MANAGEMENT, LLC4.94M$1.62M−$13.5MCut−$13.5M
Qube Research & Technologies Ltd4.92M$1.62M−$1.5MCut−$60.3K
TWO SIGMA INVESTMENTS, LP4.78M$1.57M−$9.42MCut−$8.96M
State Street4.39M$1.44M−$12.2MCut−$27.4M
Corient Private Wealth LLC3.99M$1.31M−$10.7MCut−$10.6M
CAPSTONE INVESTMENT ADVISORS, LLC3M$1.23M−$806.9KCut−$1.49M
Squarepoint Ops LLC3.4M$1.12M−$614.1KAdded$429.6K
BANK OF AMERICA CORP /DE/3.17M$1.04M−$5.29MCut−$4.87M
BARCLAYS PLC3.07M$1.01M−$1.6MCut−$780.1K
ADVENT CAPITAL MANAGEMENT /DE/2.25M$960.9K−$577.4KCut−$3.14M
Monashee Investment Management LLC2.17M$845.3K−$2.46MCut−$3.53M
VANGUARD PORTFOLIO MANAGEMENT LLC2.16M$711KHeld
Alyeska Investment Group, L.P.2.05M$673.9K−$2.52MCut−$2.14M
ALLIANCEBERNSTEIN L.P.190.2K$589.7K$0Held
Ensign Peak Advisors, Inc1.7M$559.1KNew
JACOBS LEVY EQUITY MANAGEMENT, INC1.7M$556.9K−$4.7MCut−$6.2M
Rock Springs Capital Management LP1.61M$528.7K−$1.56MCut−$16.2M
MACKENZIE FINANCIAL CORP1.54M$504.9K−$853.6KCut−$449.4K
MB Generational Wealth, LLC1.53M$503.3K−$4.25MCut−$4.47M
CHARLES SCHWAB INVESTMENT MANAGEMENT INC1.51M$496.1K−$4.19MCut−$4.73M
NORTHERN TRUST CORP1.41M$462.8K−$3.9MCut−$3.93M
VANGUARD FIDUCIARY TRUST CO1.4M$462KHeld
DEUTSCHE BANK AG\1.31M$430.9K−$3.56MCut−$3.55M
Renaissance Technologies1.22M$400.1K−$1.83MCut−$1.64M
GOLDMAN SACHS GROUP INC1.18M$387.8K−$3.27MCut−$5.17M
NEA Management Company, LLC1M$328.5K−$2.77MCut−$55.8M
VOYA INVESTMENT MANAGEMENT LLC866.6K$284.7K−$101.2KAdded$171.5K
Hennion & Walsh Asset Management, Inc.828.7K$272.2K−$1.81MCut−$1.75M
Ishara Investments LP820K$269.4KNew
XTX Topco Ltd679.1K$223.1K−$1.26MCut−$1.19M
Connor, Clark & Lunn Investment Management Ltd.658.2K$216.2K−$1.46MCut−$1.42M
SMITH, MOORE & CO.470K$154.4K−$776KCut−$713.6K
PANAGORA ASSET MANAGEMENT INC469.9K$154.4K−$408.2KCut−$302.2K
Invesco Ltd.465K$152.7K−$1.29MCut−$1.33M
Bank of New York Mellon Corp428.2K$140.7K−$1.19MCut−$1.25M
Mariner, LLC418.4K$137.4K−$178.8KCut−$62.5K
IEQ CAPITAL, LLC393.7K$129.3K−$31.1KAdded$94.6K
LPL Financial LLC371.7K$122.1K−$994.7KCut−$990.5K
MORGAN STANLEY367.4K$120.7K−$1.02MCut−$2.73M
CWM, LLC320K$105.1K$11KAdded$105K
ADAR1 Capital Management, LLC287.5K$94.5K−$589KCut−$564.4K
CHOREO, LLC250.1K$82.2K−$209.7KCut−$152.2K
RHUMBLINE ADVISERS216.4K$71.2K−$595.4KCut−$594.9K
MERCER GLOBAL ADVISORS INC /ADV189.3K$62.2K−$66.5KCut−$12.2K
MILLENNIUM MANAGEMENT LLC187.4K$61.6K−$519.4KCut−$11M
Merit Financial Group, LLC154.4K$50.7K−$428KCut−$430.3K
Russell Investments Group, Ltd.145.3K$47.7K−$402.6KCut−$482.6K
SUSQUEHANNA INTERNATIONAL GROUP, LLP135.8K$44.6K−$245.2KCut−$229.6K
Nuveen, LLC132.9K$43.7K−$368.3KCut−$912.8K
LOS ANGELES CAPITAL MANAGEMENT LLC131.2K$43.1KNew
Creative Planning125.6K$41.3K−$126.4KCut−$100.1K
TUDOR INVESTMENT CORP ET AL115.2K$37.9K−$138.6KCut−$117.1K
HSBC HOLDINGS PLC113.9K$37.8KNew
NINE MASTS CAPITAL Ltd114.8K$37.7KNew
COMMONWEALTH EQUITY SERVICES, LLC110K$36.1K−$218.3KCut−$208K
Rockefeller Capital Management L.P.107.6K$35.4K−$168.7KCut−$153.3K
VICTORY CAPITAL MANAGEMENT INC107.1K$35.2K−$292.5KCut−$292K
BCV Asset Management Inc.106.5K$35KNew
Cerity Partners LLC106.5K$35K−$88.5KCut−$63.9K
Quarry LP100K$32.9KNew
BNP PARIBAS FINANCIAL MARKETS95.6K$31.4K−$248KCut−$246K
Sivia Capital Partners, LLC91.7K$30.1K−$97.1KCut−$78.5K
MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.91.4K$30K−$253.7KCut−$303.5K
Sequoia Financial Advisors, LLC90.6K$29.8K−$245.2KCut−$244.5K
JPMORGAN CHASE & CO92.7K$29.7K−$257.7KCut−$1.3M
WEALTH ENHANCEMENT ADVISORY SERVICES, LLC103.4K$29.1K−$52.5KCut−$30.1K
GROUP ONE TRADING LLC83.6K$27.5KNew
Vanguard Global Advisers, LLC79.7K$26.2KHeld
WELLS FARGO & COMPANY/MN76.3K$25.1K−$211.4KCut−$1.1M
Virtus Investment Advisers, LLC75.7K$24.9K−$204.8KCut−$204.2K
Chicago Partners Investment Group LLC62.5K$24.4KNew
Focus Partners Wealth73K$24KNew
Caption Management, LLC71.3K$23.4K−$197.6KCut−$210.2K
Velan Capital Investment Management LP70K$23K−$194KCut−$194K
Caprock Group, LLC70K$23K−$194KCut−$225K
WADDELL & ASSOCIATES, LLC67.6K$22.2KNew
HighTower Advisors, LLC65.6K$21.6K−$181.9KCut−$184.6K
MANUFACTURERS LIFE INSURANCE COMPANY, THE57.9K$19K−$160.5KCut−$162.1K
CAPTRUST FINANCIAL ADVISORS57.5K$18.9KNew
PRUDENTIAL FINANCIAL INC55.9K$18.4K−$104.3KCut−$98.2K
INTECH INVESTMENT MANAGEMENT LLC54K$17.7K−$149.7KCut−$247.6K
AlphaCore Capital LLC53K$17.4K−$91.5KCut−$82.8K
Police & Firemen's Retirement System of New Jersey51.3K$16.9K−$142.2KCut−$142.2K
NEW YORK STATE COMMON RETIREMENT FUND43.6K$14.3K−$120.8KCut−$120.8K
China Universal Asset Management Co., Ltd.41.1K$13.5K−$113.8KCut−$134.4K
Skaana Management L.P.40.2K$13.2KNew
LETKO, BROSSEAU & ASSOCIATES INC39.4K$12.9K−$109.2KCut−$109.2K
ProShare Advisors LLC38.2K$12.6K−$105.9KCut−$128K
Curi Capital, LLC37.2K$12.2K−$29.6KCut−$20.8K
Tower Research Capital LLC (TRC)36.3K$11.9K−$47.8KCut−$41.5K
Vickerman Investment Advisors, Inc.34.8K$11.4K−$96.4KCut−$96.4K
Alpine Global Management, LLC32.8K$10.8K−$5.53MCut−$5.52M
SEI INVESTMENTS CO31.5K$10.4K−$87.4KCut−$699.2K
Bull Harbor Capital LLC31.2K$10.2KHeld
Cetera Investment Advisers30.7K$10.1K−$85.2KCut−$96.1K
Evernest Financial Advisors, LLC28.8K$10K−$54.3KCut−$54.2K
CSS LLC/IL30K$9.86KNew
Kestra Advisory Services, LLC28.5K$9.36K−$44.3KCut−$40.2K
GERBER, LLC28.2K$9.28K−$78.3KCut−$78.3K
Beacon Pointe Advisors, LLC28K$9.2K−$30.5KCut−$24.9K
R.H. Investment Group, LLC26.3K$9.14KNew
NorthCrest Asset Manangement, LLC24.7K$9.13K−$27.2KCut−$22.3K
Focus Partners Advisor Solutions, LLC26.3K$8.63KNew
Gladstone Institutional Advisory LLC25K$8.2K−$39.3KCut−$35.7K
Clearstead Advisors, LLC23.6K$7.74K−$65.3KCut−$65.6K
MAI Capital Management22.6K$7.42K−$236Added$7.16K
Fidelity22.5K$7.4K−$62.4KCut−$13.1M
Krilogy Financial LLC16.6K$7.27KNew
Rialto Wealth Management, LLC20.6K$6.75K−$15.9KCut−$11.1K
AXQ CAPITAL, LP20.4K$6.71K−$56.6KCut−$189K
ANGELES WEALTH MANAGEMENT, LLC20K$6.57KNew
Essential Partners LLC18.9K$6.2K−$6.74KCut−$1.34K
Birchview Capital, LP18.2K$5.97K−$50.4KCut−$422.4K
VestGen Advisors, LLC17.4K$5.94KNew
CITIGROUP INC17.8K$5.83K−$49.2KCut−$146.7K
PRINCIPAL FINANCIAL GROUP INC17.6K$5.78K−$31.7KCut−$29.6K
DRIVE WEALTH MANAGEMENT, LLC17.6K$5.76K−$48.6KCut−$60.3K
Vanguard Personalized Indexing Management, LLC17.5K$5.76K−$44.7KCut−$44.2K
CreativeOne Wealth, LLC17.4K$5.73KNew
Legal & General Group Plc17.3K$5.68K−$47.9KCut−$57.2K
XPONANCE LLC17.2K$5.65K−$41.3KCut−$40.5K
NEUBERGER BERMAN GROUP LLC17.2K$5.64K−$34.8KCut−$33.3K
BRIDGEWAY CAPITAL MANAGEMENT, LLC16K$5.26K−$44.3KCut−$540.3K
Ameritas Investment Partners, Inc.15.9K$5.21K−$44KCut−$44K
Ground Swell Capital, LLC15.4K$5.04KNew
Orion Porfolio Solutions, LLC15.2K$5KNew
Integrated Wealth Concepts LLC14.4K$4.74KNew
Baker Avenue Asset Management, LP13.2K$4.34KNew
OPPENHEIMER & CO INC13K$4.27K−$36KCut−$112K
Rothschild Wealth LLC12.9K$4.22KNew
Stratos Wealth Partners, LTD.12.8K$4.21KNew
Mirae Asset Global Investments Co., Ltd.12.1K$3.97K−$31.2KCut−$30.9K
Curated Wealth Partners LLC11.8K$3.87KNew
BEESE FULMER INVESTMENT MANAGEMENT, INC.11.1K$3.66KNew
State of Wyoming10.9K$3.59KNew
Algorithmic Investment Models, LLC10.8K$3.54KNew
Baader Bank Aktiengesellschaft16.1K$3.47KNew
CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM10.4K$3.42K−$28.8KCut−$33.3K
Pallas Capital Advisors LLC10.4K$3.41KNew
MMA ASSET MANAGEMENT LLC10K$3.29K−$27.7KCut−$27.7K
MML INVESTORS SERVICES, LLC10K$3.29K−$27.7KCut−$28.8K
Federation des caisses Desjardins du Quebec7.75K$2.55K−$2.08KAdded$225
JONES FINANCIAL COMPANIES LLLP6.65K$2.3K−$18.3KCut−$59K
ROYAL BANK OF CANADA7.37K$2K−$15.5KCut−$15K
EverSource Wealth Advisors, LLC5.96K$1.96K−$1.82KCut−$74
IFP Advisors, Inc5.84K$1.92K−$2.62KCut−$1.01K
ACADIAN ASSET MANAGEMENT LLC5.28M$1.73K−$12.2KCut−$12K
GF FUND MANAGEMENT CO. LTD.5.17K$1.7K−$12.6KCut−$12.4K
Allworth Financial LP4.82K$1.58K−$5.58KCut−$4.66K
Farther Finance Advisors, LLC3.67K$1.34K−$1.27KCut−$97
GSA CAPITAL PARTNERS LLP3.25M$1.07K−$144Added$908
ROTHSCHILD INVESTMENT LLC2.01K$661−$701Cut−$123
NISA INVESTMENT ADVISORS, LLC1.88K$619−$5.22KCut−$5.62K
Wealth Preservation Advisors, LLC1.5K$494New
OSAIC HOLDINGS, INC.1.34K$441−$3.72KCut−$7.23K
Sterling Capital Management LLC1.26K$416−$3.51KCut−$3.51K
Heritage Wealth Advisors1K$329−$2.77KCut−$2.77K
Steward Partners Investment Advisory, LLC1K$329−$2.77KCut−$2.77K
NATIXIS920$302New
SJS Investment Consulting Inc.705$232−$164Added$49
SBI Securities Co., Ltd.614$202−$1.7KCut−$13.4K
PNC Financial Services Group, Inc.404$133−$551Cut−$484
Cornerstone Financial Management LLC282$93−$781Cut−$781
Virtu Financial LLC263.2K$86New
PRICE T ROWE ASSOCIATES INC /MD/132K$44−$313Cut−$307
SG Americas Securities, LLC128.6K$42−$206Cut−$188
Cambridge Investment Research Advisors, Inc.42.8K$14−$119Cut−$225
True Wealth Design, LLC23$8−$63Cut−$1.24K
Morton Brown Family Wealth, LLC25$8−$70Cut−$70
TD Waterhouse Canada Inc.15$5New
Janney Montgomery Scott LLC11.2K$4−$30Cut−$35
HHM Wealth Advisors, LLC1$1New

Who left

Positions as of Q1 2026. 13F filings arrive up to 45 days after quarter-end and omit shorts. Values are quarter-end marks, as filed. Estimated mark is the price effect on shares still held — not realized P&L or investment advice.