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GROUP ONE TRADING LLC

Position in GOSS — Gossamer Bio, Inc.

CIK 932540 CHICAGO, IL

Position in GOSS

as of Jun 30, 2026 · filed Aug 14, 2026
Position Value
$18,302
-$9,200 QoQ
Shares Held
110,927
+32.7% QoQ
Ownership
0.023%
of shares outstanding
% of Portfolio
0.00%
of 13F equity value
Holder Rank
#74
of 168 holders
Holding Since
Mar 2020
18 quarters on record
Voting authority Sole 100% Shared 0% None 0%

Common Shares in GOSS Over Time

Shares Held

Position Value (USD)

Position in Biotechnology

Healthcare · as of Jun 30, 2026

GROUP ONE TRADING LLC holds $113,693,049 across 200 Biotechnology names. GOSS ranks #115 (0.0% of the industry book) .

# Ticker Company Shares Value (USD) Open

All Filings in GOSS

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18 filing rows on record
Report Date Value (USD) Shares
2026-06-30 $18,302 110,927
2026-03-31 $27,502 83,595
2025-09-30 $196,016 74,531
2025-06-30 $286,799 233,170
2025-03-31 $228,518 207,744
2024-12-31 $67,552 74,644
2024-09-30 $10,909 11,064
2022-12-31 $127,895 58,938
2022-09-30 $1,572,003 131,219
2022-06-30 $1,123,287 134,204
2022-03-31 $65,447 7,540
2021-12-31 $133,446 11,799
2021-09-30 $176,105 14,010
2021-06-30 $812 100
2020-12-31 $49,200 5,088
2020-09-30 $2,333 188
2020-06-30 $15,444 1,188
2020-03-31 $623,159 61,395