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GOSS — GOSSAMER BIO INC

Reported value held$73.12M
Funds holding (latest)39
SectorHealth Care
Funds holding (Q2 2026)28
Institutional value$18.55M · 112.73M sh
New / Add / Cut / Exit2 / 9 / 16 / 3
Top-5 / Top-10 concentration74.1% / 92.1%
Institutional holdings change Accumulating +66.1% (+44.85M sh)
Institutional value change Down -18.1%

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 $18.55M across 112.73M shares. That is +66.1% by share count (+44.85M shares) versus the previous quarter, while reported value moved -18.1%. Ownership is concentrated: the five largest holders account for 74.1% of reported value and the top ten for 92.1%.

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.

FundQuarterSharesValuePortfolio WeightChange
Vanguard Group history Q4 2025 12.87M $39.91M 0.00% Add
Farallon Capital Management history Q1 2024 6.13M $7.23M 0.03% Hold
D. E. Shaw & Co history Q2 2026 40.96M $6.74M 0.00% Add
Soros Fund Management history Q2 2022 4.95M $3.74M 0.09% Hold
AQR Capital Management history Q2 2026 15.63M $2.57M 0.00% Add
Renaissance Technologies history Q2 2026 11.63M $1.91M 0.00% Add
Wellington Management Group history Q4 2025 601.32K $1.86M 0.00% Reduce
BlackRock Inc history Q2 2026 7.67M $1.26M 0.00% Reduce
Arrowstreet Capital history Q2 2026 7.57M $1.25M 0.00% New
Moore Capital Management history Q4 2021 109.02K $1.23M 0.03% Reduce
Two Sigma Investments history Q2 2026 7.43M $1.22M 0.00% Add
Hillhouse Capital (HHLR Advisors) history Q2 2026 4.97M $818.73K 0.10% Hold
UBS Group AG history Q2 2026 3.09M $510.47K 0.00% Add
Geode Capital Management history Q2 2026 2.48M $408.71K 0.00% Reduce
Millennium Management history Q2 2026 2.40M $395.47K 0.00% Add
Point72 Asset Management history Q4 2025 125.00K $387.50K 0.00% Add
Marshall Wace history Q2 2026 2.11M $338.40K 0.00% New
JPMorgan Chase & Co history Q2 2026 1.23M $201.50K 0.00% Reduce
Deutsche Bank AG history Q2 2026 1.11M $188.09K 0.00% Reduce
Goldman Sachs Group history Q2 2026 1.13M $185.74K 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)

FundQ3 2021Q4 2021Q1 2022Q2 2022Q3 2022Q4 2022Q1 2023Q2 2023Q3 2023Q4 2023Q1 2024Q2 2024Q3 2024Q4 2024Q1 2025Q2 2025Q3 2025Q4 2025Q1 2026Q2 2026
D. E. Shaw & Co — — 42.91K 37.75K 285.76K 315.62K 136.18K 376.83K 271.31K 506.89K 592.89K — — — — 56.81K 248.82K 198.71K 389.43K 40.96M
AQR Capital Management — — — — — 14.47K — — — — — — — — — — 646.62K 1.12M 10.13M 15.63M
Renaissance Technologies — 43.70K 132.10K 68.90K 35.80K — — — — 997.00K 671.60K 2.05M 1.74M 1.71M 1.57M 2.73M 2.98M 658.89K 1.22M 11.63M
BlackRock Inc — — — — — — — — — — — — 2.81M 3.03M 3.07M 12.14M 13.85M 17.06M 16.83M 7.67M
Arrowstreet Capital — — 35.25K — — — — — — — — — — — 803.82K 1.12M 635.40K 750.31K — 7.57M
Two Sigma Investments 189.36K 332.25K 449.06K 245.56K 925.73K 1.46M 1.88M 1.57M 536.10K 1.02M 808.77K 309.98K 630.96K 891.28K 1.28M 1.75M 2.29M 3.40M 4.78M 7.43M
Hillhouse Capital (HHLR Advisors) 7.42M 7.42M 7.42M 7.42M 7.42M 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
UBS Group AG 61.98K 165.43K 183.80K 113.83K 30.87K 1.73M 173.99K 177.39K 2.00K 24.02K 5.53K 45 149.84K 19.04K 220.27K 312.74K 2.77M 1.77M 1.88M 3.09M
Geode Capital Management 995.76K 1.01M 1.03M 1.03M 1.26M 1.30M 1.35M 769.16K 2.17M 2.27M 2.28M 2.28M 2.21M 2.25M 2.27M 4.56M 4.69M 4.87M 4.94M 2.48M
Millennium Management 508.79K 208.89K 388.69K 1.48M 1.33M 4.63M 5.46M 4.21M 7.05M 4.22M 6.50M 5.60M 3.13M 3.59M 2.68M 496.25K 3.62M 3.58M 187.42K 2.40M
Marshall Wace 19.25K 572.07K 572.07K 347.75K 499.56K 1.02M 1.77M 1.75M 1.65M 1.02M 1.23M 3.34M 3.48M 2.53M 1.71M — — — — 2.11M
JPMorgan Chase & Co 42.55K 46.23K 110.31K 59.00K 72.70K 917.57K 33.69K 3.96K 43.58K — 201.90K 694 694 5.14K 15.62K 90.45K 194.37K 428.90K 6.00M 1.23M
Deutsche Bank AG 59.73K 61.03K 39.97K 38.94K 750.00K 750.00K 750.00K 162.04K 750.00K 1.00M 1.00M 1.00M 1.00M 1.00M 1.00M 2.26M 1.28M 1.28M 1.31M 1.11M
Goldman Sachs Group 571.92K 244.09K 455.89K 640.59K 1.05M 1.77M 1.33M 403.87K 1.66M 2.73M 2.69M 2.12M 730.75K 114.56K 939.60K 160.69K 299.58K 1.79M 1.18M 1.13M
Charles Schwab Investment Management 382.57K 390.50K 407.56K 397.43K 530.18K 542.05K 462.70K 428.81K 1.08M 1.22M 1.25M 1.26M 1.23M 1.24M 1.14M 1.62M 1.73M 1.69M 1.51M 992.53K
Northern Trust Corp 600.44K 598.09K 592.17K 627.08K 673.97K 659.69K 608.83K 196.37K 436.76K 442.79K 386.56K 441.01K 410.70K 411.33K 410.12K 1.52M 1.50M 1.42M 1.41M 458.50K
Invesco Ltd 52.40K 47.04K 49.77K 59.02K 976.00K 57.85K 25.42K — — — — — — — 43.70K 239.25K 352.09K 478.91K 464.97K 442.27K
Bank of America Corp 144.47K 253.66K 122.00K 122.00K 122.00K 3.04M 228.93K 103.88K 96.57K 81.70K 119.97K 42.29K 40.92K 84.79K 163.83K 67.08K 2.88M 1.91M 3.17M 396.73K
Morgan Stanley 1.30M 1.30M 1.30M 1.30M 1.30M 3.16M 769.81K 576.26K 391.37K 5.57M 4.34M 194.66K 180.24K 148.56K 459.53K 818.69K 566.42K 918.89K 367.38K 241.59K
Citadel Advisors 10.00M 15.70M 8.20M 2.62M 1.06M 264.80K 2.88M 1.51M 6.29M 6.26M 3.98M 4.26M 1.19M 343.61K 283.13K 911.06K 2.66M 1.57M 391.30K 230.60K

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