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GOSS — GOSSAMER BIO INC

Reported value held$73.10M
Funds holding (latest)39
SectorHealth Care
Funds holding (Q2 2026)28
Institutional value$18.53M · 112.57M sh
New / Add / Cut / Exit2 / 9 / 16 / 3
Top-5 / Top-10 concentration74.2% / 92.3%
Institutional holdings change Accumulating +65.8% (+44.69M sh)
Institutional value change Down -18.2%

As of Q2 2026, 28 SEC-registered investment managers reported holding GOSS (GOSSAMER BIO INC) in their latest 13F filings, with a combined reported value of $18.53M across 112.57M shares. That is +65.8% by share count (+44.69M shares) versus the previous quarter, while reported value moved -18.2%. Ownership is concentrated: the five largest holders account for 74.2% of reported value and the top ten for 92.3%.

Compared with the prior quarter, 2 opened new positions, 9 added to existing stakes, 16 trimmed, 3 exited entirely. 13F holdings are quarter-end snapshots, so these moves reflect positioning as of Q2 2026, not real-time trading.

GOSS is classified in the Health Care sector.

All figures on this page are computed from SEC Form 13F quarterly filings. 13F filers disclose long positions of $100,000 or more within 45 days of quarter end; short positions, options overlays and intra-quarter trades are not included, so treat the numbers as a quarterly snapshot of institutional ownership rather than real-time positioning.

Q2 2026 — 28 funds

FundSharesValuePortfolio WeightChange
D. E. Shaw & Co history 40.96M $6.74M 0.00% Add
AQR Capital Management history 15.63M $2.57M 0.00% Add
Renaissance Technologies history 11.63M $1.91M 0.00% Add
BlackRock Inc history 7.67M $1.26M 0.00% Reduce
Arrowstreet Capital history 7.57M $1.25M 0.00% New
Two Sigma Investments history 7.43M $1.22M 0.00% Add
Hillhouse Capital (HHLR Advisors) history 4.97M $818.73K 0.10% Hold
UBS Group AG history 3.09M $510.47K 0.00% Add
Geode Capital Management history 2.48M $408.71K 0.00% Reduce
Millennium Management history 2.40M $395.47K 0.00% Add
Marshall Wace history 2.11M $338.40K 0.00% New
JPMorgan Chase & Co history 1.23M $201.50K 0.00% Reduce
Deutsche Bank AG history 1.11M $188.09K 0.00% Reduce
Goldman Sachs Group history 1.13M $185.74K 0.00% Reduce
Charles Schwab Investment Management history 992.53K $163.37K 0.00% Reduce
Northern Trust Corp history 458.50K $75.47K 0.00% Reduce
Invesco Ltd history 442.27K $72.80K 0.00% Reduce
Bank of America Corp history 396.73K $65.06K 0.00% Reduce
Morgan Stanley history 241.59K $39.77K 0.00% Reduce
Prudential Financial history 227.55K $37.45K 0.00% Add
Fidelity Management & Research (FMR) history 130.32K $21.45K 0.00% Add
Balyasny Asset Management history 104.23K $17.16K 0.00% Reduce
Citadel Advisors history 74.00K $12.18K 0.00% Reduce
BNY Mellon history 45.71K $7.52K 0.00% Reduce
Manulife Financial history 15.91K $2.62K 0.00% Reduce
Citigroup Inc history 6.57K $1.08K 0.00% Reduce
Wells Fargo & Co history 6.50K $1.07K 0.00% Reduce
PNC Financial Services history 2.17K $358 0.00% Add

Q1 2026 — 29 funds

FundSharesValuePortfolio WeightChange
BlackRock Inc history 16.83M $5.53M 0.00% Reduce
AQR Capital Management history 10.13M $3.33M 0.00% Add
JPMorgan Chase & Co history 6.00M $2.35M 0.18% Add
Balyasny Asset Management history 5.92M $1.95M 0.00% Add
Hillhouse Capital (HHLR Advisors) history 4.97M $1.63M 0.10% Hold
Geode Capital Management history 4.94M $1.62M 0.00% Add
Two Sigma Investments history 4.78M $1.57M 0.00% Add
Bank of America Corp history 3.17M $1.04M 0.00% Add
UBS Group AG history 1.88M $619.70K 0.00% Add
Charles Schwab Investment Management history 1.51M $496.06K 0.00% Reduce
Northern Trust Corp history 1.41M $462.84K 0.00% Reduce
Deutsche Bank AG history 1.31M $430.94K 0.00% Add
Renaissance Technologies history 1.22M $400.07K 0.00% Add
Goldman Sachs Group history 1.18M $387.81K 0.00% Reduce
Invesco Ltd history 464.97K $152.74K 0.00% Reduce
BNY Mellon history 428.24K $140.68K 0.00% Reduce
Citadel Advisors history 391.30K $128.54K 0.00% Reduce
D. E. Shaw & Co history 389.43K $127.93K 0.00% Add
Morgan Stanley history 367.38K $120.68K 0.00% Reduce
Millennium Management history 187.42K $61.57K 0.00% Reduce
Wells Fargo & Co history 76.26K $25.05K 0.00% Reduce
Manulife Financial history 57.92K $19.03K 0.00% Reduce
Prudential Financial history 55.92K $18.37K 0.00% Add
Fidelity Management & Research (FMR) history 22.52K $7.40K 0.00% Reduce
Citigroup Inc history 17.75K $5.83K 0.00% Reduce
Principal Global Investors history 17.59K $5.78K 0.00% Add
Legal & General Investment Management America history 17.30K $5.68K 0.00% Reduce
PNC Financial Services history 404 $133 0.00% Add
T. Rowe Price Associates history 132.03K $44 0.00% Add

Q4 2025 — 34 funds

FundSharesValuePortfolio WeightChange
BlackRock Inc history 17.06M $52.88M 0.00% Add
Vanguard Group history 12.87M $39.91M 0.00% Add
Hillhouse Capital (HHLR Advisors) history 4.97M $15.42M 0.50% Hold
Geode Capital Management history 4.87M $15.11M 0.00% Add
Fidelity Management & Research (FMR) history 4.24M $13.14M 0.00% Add
Millennium Management history 3.58M $11.11M 0.01% Reduce
Two Sigma Investments history 3.40M $10.53M 0.02% Add
Bank of America Corp history 1.91M $5.91M 0.00% Reduce
Goldman Sachs Group history 1.79M $5.56M 0.00% Add
UBS Group AG history 1.77M $5.49M 0.00% Reduce
Charles Schwab Investment Management history 1.69M $5.23M 0.00% Reduce
Citadel Advisors history 1.57M $4.86M 0.00% Reduce
Balyasny Asset Management history 1.52M $4.70M 0.01% Add
Northern Trust Corp history 1.42M $4.39M 0.00% Reduce
Deutsche Bank AG history 1.28M $3.98M 0.00% Hold
AQR Capital Management history 1.12M $3.47M 0.00% Add
Morgan Stanley history 918.89K $2.85M 0.00% Add
Arrowstreet Capital history 750.31K $2.33M 0.00% Add
Renaissance Technologies history 658.89K $2.04M 0.00% Reduce
Wellington Management Group history 601.32K $1.86M 0.00% Reduce
Invesco Ltd history 478.91K $1.48M 0.00% Add
BNY Mellon history 447.90K $1.39M 0.00% Hold
JPMorgan Chase & Co history 428.90K $1.33M 0.00% Add
Wells Fargo & Co history 361.92K $1.12M 0.00% Add
D. E. Shaw & Co history 198.71K $616.00K 0.00% Reduce
Point72 Asset Management history 125.00K $387.50K 0.00% Add
Manulife Financial history 58.44K $181.17K 0.00% Reduce
Lazard Asset Management history 56.67K $175.67K 0.00% Add
Citigroup Inc history 49.21K $152.56K 0.00% Add
Prudential Financial history 37.62K $116.61K 0.00% Reduce
Legal & General Investment Management America history 20.28K $62.87K 0.00% Reduce
Principal Global Investors history 11.42K $35.41K 0.00% Reduce
PNC Financial Services history 199 $617 0.00% Reduce
T. Rowe Price Associates history 113.14K $351 0.00% Add

Q3 2025 — 34 funds

FundSharesValuePortfolio WeightChange
BlackRock Inc history 13.85M $36.42M 0.00% Add
Vanguard Group history 12.01M $31.59M 0.00% Add
Hillhouse Capital (HHLR Advisors) history 4.97M $13.08M 0.32% Hold
Geode Capital Management history 4.69M $12.34M 0.00% Add
Fidelity Management & Research (FMR) history 4.09M $10.74M 0.00% Reduce
Millennium Management history 3.62M $9.52M 0.00% Add
Renaissance Technologies history 2.98M $7.84M 0.01% Add
Bank of America Corp history 2.88M $7.58M 0.00% Add
UBS Group AG history 2.77M $7.29M 0.00% Add
Citadel Advisors history 2.66M $6.99M 0.00% Add
Two Sigma Investments history 2.29M $6.02M 0.01% Add
Charles Schwab Investment Management history 1.73M $4.55M 0.00% Add
Northern Trust Corp history 1.50M $3.93M 0.00% Reduce
Deutsche Bank AG history 1.28M $3.36M 0.00% Reduce
Balyasny Asset Management history 770.57K $2.03M 0.00% New
AQR Capital Management history 646.62K $1.70M 0.00% New
Wellington Management Group history 641.72K $1.69M 0.00% New
Arrowstreet Capital history 635.40K $1.67M 0.00% Reduce
Morgan Stanley history 566.42K $1.49M 0.00% Reduce
BNY Mellon history 448.21K $1.18M 0.00% Add
Invesco Ltd history 352.09K $925.99K 0.00% Add
Goldman Sachs Group history 299.58K $787.90K 0.00% Add
D. E. Shaw & Co history 248.82K $654.39K 0.00% Add
JPMorgan Chase & Co history 194.37K $511.19K 0.00% Add
Wells Fargo & Co history 116.67K $306.83K 0.00% Add
Manulife Financial history 65.38K $171.95K 0.00% Reduce
Prudential Financial history 50.72K $133.38K 0.00% Add
Lazard Asset Management history 41.70K $109.67K 0.00% Reduce
Citigroup Inc history 30.02K $78.94K 0.00% Reduce
Point72 Asset Management history 25.00K $65.75K 0.00% New
Legal & General Investment Management America history 20.89K $54.84K 0.00% Reduce
Principal Global Investors history 14.58K $38.34K 0.00% Add
PNC Financial Services history 289 $760 0.00% New
T. Rowe Price Associates history 100.66K $265 0.00% Add

Q2 2025 — 39 funds

FundSharesValuePortfolio WeightChange
BlackRock Inc history 12.14M $14.94M 0.00% Add
BlackRock Inc history 12.14M $14.94M 0.00% Add
Vanguard Group history 11.41M $14.04M 0.00% Add
Fidelity Management & Research (FMR) history 7.32M $9.00M 0.00% Reduce
Fidelity Management & Research (FMR) history 7.32M $9.00M 0.00% Reduce
Hillhouse Capital (HHLR Advisors) history 4.97M $6.12M 0.20% Hold
Hillhouse Capital (HHLR Advisors) history 4.97M $6.12M 0.20% Hold
Geode Capital Management history 4.56M $5.60M 0.00% Add
Renaissance Technologies history 2.73M $3.36M 0.00% Add
Renaissance Technologies history 2.73M $3.36M 0.00% Add
Deutsche Bank AG history 2.26M $2.78M 0.00% Add
Deutsche Bank AG history 2.26M $2.78M 0.00% Add
Two Sigma Investments history 1.75M $2.15M 0.00% Add
Two Sigma Investments history 1.75M $2.15M 0.00% Add
Charles Schwab Investment Management history 1.62M $1.99M 0.00% Add
Northern Trust Corp history 1.52M $1.87M 0.00% Add
Arrowstreet Capital history 1.12M $1.38M 0.00% Add
Citadel Advisors history 911.06K $1.12M 0.00% Add
Citadel Advisors history 911.06K $1.12M 0.00% Add
Morgan Stanley history 818.69K $1.01M 0.00% Add
Morgan Stanley history 818.69K $1.01M 0.00% Add
Millennium Management history 496.25K $610.38K 0.00% Reduce
BNY Mellon history 386.71K $475.65K 0.00% Add
UBS Group AG history 312.74K $384.67K 0.00% Add
Invesco Ltd history 239.25K $294.27K 0.00% Add
Goldman Sachs Group history 160.69K $197.65K 0.00% Reduce
Goldman Sachs Group history 160.69K $197.65K 0.00% Reduce
Wells Fargo & Co history 98.16K $120.73K 0.00% Add
JPMorgan Chase & Co history 90.45K $111.25K 0.00% Add
JPMorgan Chase & Co history 90.45K $111.25K 0.00% Add
Manulife Financial history 72.06K $88.64K 0.00% New
Citigroup Inc history 67.43K $82.94K 0.00% Add
Bank of America Corp history 67.08K $82.51K 0.00% Reduce
D. E. Shaw & Co history 56.81K $69.87K 0.00% New
Prudential Financial history 50.41K $62.01K 0.00% Add
Legal & General Investment Management America history 21.16K $26.03K 0.00% New
Principal Global Investors history 13.51K $16.61K 0.00% New
T. Rowe Price Associates history 95.29K $118 0.00% Add
Lazard Asset Management history 67.36K $82 0.00% Add

Q1 2025 — 37 funds

FundSharesValuePortfolio WeightChange
Vanguard Group history 10.08M $11.09M 0.00% Hold
Fidelity Management & Research (FMR) history 7.59M $8.35M 0.00% Reduce
Fidelity Management & Research (FMR) history 7.59M $8.35M 0.00% Reduce
Hillhouse Capital (HHLR Advisors) history 4.97M $5.47M 0.15% Hold
Hillhouse Capital (HHLR Advisors) history 4.97M $5.47M 0.15% Hold
BlackRock Inc history 3.07M $3.38M 0.00% Add
BlackRock Inc history 3.07M $3.38M 0.00% Add
Millennium Management history 2.68M $2.95M 0.00% Reduce
Geode Capital Management history 2.27M $2.50M 0.00% Add
Marshall Wace history 1.71M $1.89M 0.00% Reduce
Renaissance Technologies history 1.57M $1.73M 0.00% Reduce
Renaissance Technologies history 1.57M $1.73M 0.00% Reduce
Two Sigma Investments history 1.28M $1.40M 0.00% Add
Two Sigma Investments history 1.28M $1.40M 0.00% Add
Charles Schwab Investment Management history 1.14M $1.25M 0.00% Reduce
Goldman Sachs Group history 939.60K $1.03M 0.00% Add
Goldman Sachs Group history 939.60K $1.03M 0.00% Add
Arrowstreet Capital history 803.82K $884.20K 0.00% New
Deutsche Bank AG history 1.00M $560.00K 0.00% Hold
Deutsche Bank AG history 1.00M $560.00K 0.00% Hold
Morgan Stanley history 459.53K $505.49K 0.00% Add
Morgan Stanley history 459.53K $505.49K 0.00% Add
Northern Trust Corp history 410.12K $451.13K 0.00% Hold
Balyasny Asset Management history 289.26K $318.19K 0.00% New
Citadel Advisors history 283.13K $311.44K 0.00% Reduce
Citadel Advisors history 283.13K $311.44K 0.00% Reduce
UBS Group AG history 220.27K $242.30K 0.00% Add
Bank of America Corp history 163.83K $180.21K 0.00% Add
Prudential Financial history 47.05K $51.76K 0.00% Hold
Invesco Ltd history 43.70K $48.07K 0.00% New
BNY Mellon history 20.22K $22.24K 0.00% Hold
JPMorgan Chase & Co history 15.62K $17.18K 0.00% Add
JPMorgan Chase & Co history 15.62K $17.18K 0.00% Add
Citigroup Inc history 10.68K $11.75K 0.00% Add
Wells Fargo & Co history 4.41K $4.85K 0.00% New
T. Rowe Price Associates history 64.78K $72 0.00% Hold
Lazard Asset Management history 43.76K $48 0.00% Reduce

View all 39 fund holders →

New Positions (Q2 2026)

Fully Exited (vs previous quarter)

Fund Position History — shares by quarter (top 20 funds)

FundQ2 2026Q1 2026Q4 2025Q3 2025Q2 2025Q1 2025Q4 2024Q3 2024Q2 2024Q1 2024Q4 2023Q3 2023Q2 2023Q1 2023Q4 2022Q3 2022Q2 2022Q1 2022Q4 2021Q3 2021
D. E. Shaw & Co 40.96M 389.43K 198.71K 248.82K 56.81K — — — — 592.89K 506.89K 271.31K 376.83K 136.18K 315.62K 285.76K 37.75K 42.91K — —
AQR Capital Management 15.63M 10.13M 1.12M 646.62K — — — — — — — — — — 14.47K — — — — —
Renaissance Technologies 11.63M 1.22M 658.89K 2.98M 2.73M 1.57M 1.71M 1.74M 2.05M 671.60K 997.00K — — — — 35.80K 68.90K 132.10K 43.70K —
BlackRock Inc 7.67M 16.83M 17.06M 13.85M 12.14M 3.07M 3.03M 2.81M — — — — — — — — — — — —
Arrowstreet Capital 7.57M — 750.31K 635.40K 1.12M 803.82K — — — — — — — — — — — 35.25K — —
Two Sigma Investments 7.43M 4.78M 3.40M 2.29M 1.75M 1.28M 891.28K 630.96K 309.98K 808.77K 1.02M 536.10K 1.57M 1.88M 1.46M 925.73K 245.56K 449.06K 332.25K 189.36K
Hillhouse Capital (HHLR Advisors) 4.97M 4.97M 4.97M 4.97M 4.97M 4.97M 4.97M 4.97M 4.97M 4.97M 4.97M 4.97M 4.97M 4.97M 4.97M 7.42M 7.42M 7.42M 7.42M 7.42M
UBS Group AG 3.09M 1.88M 1.77M 2.77M 312.74K 220.27K 19.04K 149.84K 45 5.53K 24.02K 2.00K 177.39K 173.99K 1.73M 30.87K 113.83K 183.80K 165.43K 61.98K
Geode Capital Management 2.48M 4.94M 4.87M 4.69M 4.56M 2.27M 2.25M 2.21M 2.28M 2.28M 2.27M 2.17M 769.16K 1.35M 1.30M 1.26M 1.03M 1.03M 1.01M 995.76K
Millennium Management 2.40M 187.42K 3.58M 3.62M 496.25K 2.68M 3.59M 3.13M 5.60M 6.50M 4.22M 7.05M 4.21M 5.46M 4.63M 1.33M 1.48M 388.69K 208.89K 508.79K
Marshall Wace 2.11M — — — — 1.71M 2.53M 3.48M 3.34M 1.23M 1.02M 1.65M 1.75M 1.77M 1.02M 499.56K 347.75K 572.07K 572.07K 19.25K
JPMorgan Chase & Co 1.23M 6.00M 428.90K 194.37K 90.45K 15.62K 5.14K 694 694 201.90K — 43.58K 3.96K 33.69K 917.57K 72.70K 59.00K 110.31K 46.23K 42.55K
Deutsche Bank AG 1.11M 1.31M 1.28M 1.28M 2.26M 1.00M 1.00M 1.00M 1.00M 1.00M 1.00M 750.00K 162.04K 750.00K 750.00K 750.00K 38.94K 39.97K 61.03K 59.73K
Goldman Sachs Group 1.13M 1.18M 1.79M 299.58K 160.69K 939.60K 114.56K 730.75K 2.12M 2.69M 2.73M 1.66M 403.87K 1.33M 1.77M 1.05M 640.59K 455.89K 244.09K 571.92K
Charles Schwab Investment Management 992.53K 1.51M 1.69M 1.73M 1.62M 1.14M 1.24M 1.23M 1.26M 1.25M 1.22M 1.08M 428.81K 462.70K 542.05K 530.18K 397.43K 407.56K 390.50K 382.57K
Northern Trust Corp 458.50K 1.41M 1.42M 1.50M 1.52M 410.12K 411.33K 410.70K 441.01K 386.56K 442.79K 436.76K 196.37K 608.83K 659.69K 673.97K 627.08K 592.17K 598.09K 600.44K
Invesco Ltd 442.27K 464.97K 478.91K 352.09K 239.25K 43.70K — — — — — — — 25.42K 57.85K 976.00K 59.02K 49.77K 47.04K 52.40K
Bank of America Corp 396.73K 3.17M 1.91M 2.88M 67.08K 163.83K 84.79K 40.92K 42.29K 119.97K 81.70K 96.57K 103.88K 228.93K 3.04M 122.00K 122.00K 122.00K 253.66K 144.47K
Morgan Stanley 241.59K 367.38K 918.89K 566.42K 818.69K 459.53K 148.56K 180.24K 194.66K 4.34M 5.57M 391.37K 576.26K 769.81K 3.16M 1.30M 1.30M 1.30M 1.30M 1.30M
Prudential Financial 227.55K 55.92K 37.62K 50.72K 50.41K 47.05K 47.05K 47.05K — — — — — — — — — — — —

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