GOSS Institutional Ownership & Shareholders
GOSSAMER BIO INC (GOSS) is currently held by 133 institutional investors tracked by InsiderSet, with a combined reported market value of approximately $59.87M based on the latest available SEC Form 13F filings for the quarter ended June 30, 2026.
D. E. Shaw & Co., Inc. is currently the largest disclosed institutional shareholder of GOSS tracked by InsiderSet, reporting ownership valued at approximately $6.74M in its June 30, 2026 SEC Form 13F filing. Based on current market prices and the latest disclosed share count, the position is now estimated to be worth approximately $425.16M, representing an estimated gain of +6206.20% since the filing period.
The top 10 institutional shareholders tracked on this page collectively account for approximately 64% of the total disclosed GOSS value among the investors covered in this analysis. Major shareholders include D. E. Shaw & Co., Inc., 683 Capital Management, Llc, Deepcurrents Investment Group Llc, and several other long-term asset managers with concentrated positions in GOSSAMER BIO INC (GOSS).
This page ranks the largest institutional GOSS shareholders using publicly disclosed SEC Form 13F data, including reported values, estimated current holding values, portfolio allocation percentages, ownership concentration metrics, and historical holding changes across major hedge funds and investment firms.
Institutional Holders
133
Total Reported Value
$59.87M
Largest Holder
D. E. Shaw & Co., Inc.
Largest Position
$6.74M
Insider Transactions (90d)
0
Latest Filing Quarter
Q2 2026
New Institutional Positions
77
Funds Exiting Positions
0
| Name | Investor/Manager | Portfolio % | Quantity | Reported Balance | Current Estimated Value | Gain/loss Since Filing | Estimated Portfolio Performance |
|---|---|---|---|---|---|---|---|
| D. E. Shaw & Co., Inc. | 0.00% | 40,959,285 | $6,741,898 | $425,157,378 | +$418,415,480 | +6206.20% | |
| 683 Capital Management, Llc | 0.59% | 39,198,868 | $6,452,134 | $406,884,250 | +$400,432,116 | +6206.20% | |
| Deepcurrents Investment Group Llc | 0.21% | 37,665,073 | $6,026,411 | $390,963,458 | +$384,937,047 | +6387.50% | |
| Context Capital Management, Llc | 0.10% | 28,946,459 | $4,764,587 | $300,464,244 | +$295,699,657 | +6206.20% | |
| Worth Venture Partners, Llc | 9.29% | 25,017,881 | $4,117,943 | $259,685,605 | +$255,567,662 | +6206.20% | |
| Aqr Capital Management Llc | 0.00% | 15,629,993 | $2,572,697 | $162,239,327 | +$159,666,630 | +6206.20% | |
| Gsa Capital Partners Llp | 0.16% | 14,986,947 | $2,467,000 | $155,564,510 | +$153,097,510 | +6205.82% | |
| Renaissance Technologies LLC | Jim Simons | 0.00% | 11,629,896 | $1,914,281 | $120,718,320 | +$118,804,039 | +6206.20% |
| Kalehua Capital Management Llc | 1.05% | 11,149,363 | $1,835,185 | $115,730,388 | +$113,895,203 | +6206.20% | |
| Vanguard Capital Management Llc | 0.00% | 9,416,023 | $1,553,644 | $97,738,319 | +$96,184,675 | +6190.91% | |
| Mb Generational Wealth, Llc | 1.03% | 1,220,324 | $1,500,999 | $12,666,963 | +$11,165,964 | +743.90% | |
| Arch Venture Management, Llc | 0.12% | 8,055,916 | $1,326,004 | $83,620,408 | +$82,294,404 | +6206.20% | |
| Barclays Plc | 0.00% | 7,832,522 | $1,289,233 | $81,301,578 | +$80,012,345 | +6206.20% | |
| Octagon Capital Advisors Lp | 0.12% | 7,750,000 | $1,275,650 | $80,445,000 | +$79,169,350 | +6206.20% | |
| Blackrock, Inc. | 0.00% | 7,669,943 | $1,262,473 | $79,614,008 | +$78,351,535 | +6206.19% | |
| Arrowstreet Capital, Limited Partnership | 0.00% | 7,573,388 | $1,246,580 | $78,611,767 | +$77,365,187 | +6206.20% | |
| Two Sigma Investments, Lp | 0.00% | 7,432,001 | $1,223,307 | $77,144,170 | +$75,920,863 | +6206.20% | |
| Samsara Biocapital, Llc | 0.10% | 7,222,559 | $1,188,833 | $74,970,162 | +$73,781,329 | +6206.20% | |
| Qube Research & Technologies Ltd | 0.00% | 7,065,756 | $1,163,023 | $73,342,547 | +$72,179,524 | +6206.20% | |
| Corient Private Wealth Llc | 0.00% | 5,632,698 | $927,142 | $58,467,405 | +$57,540,263 | +6206.20% | |
| Siren, L.L.C. | 0.02% | 5,208,968 | $857,396 | $54,069,088 | +$53,211,692 | +6206.20% | |
| Hhlr Advisors, Ltd. | 0.10% | 4,974,041 | $818,727 | $51,630,546 | +$50,811,819 | +6206.20% | |
| Ensign Peak Advisors, Inc | 0.00% | 1,702,125 | $559,148 | $17,668,058 | +$17,108,910 | +3059.82% | |
| Ubs Group Ag | 0.00% | 3,093,785 | $510,474 | $32,113,488 | +$31,603,014 | +6190.92% | |
| Squarepoint Ops Llc | 0.00% | 2,556,378 | $420,780 | $26,535,204 | +$26,114,424 | +6206.19% | |
| Geode Capital Management, Llc | 0.00% | 2,481,605 | $408,706 | $25,759,060 | +$25,350,354 | +6202.59% | |
| Millennium Management Llc | 0.00% | 2,402,633 | $395,473 | $24,939,331 | +$24,543,858 | +6206.20% | |
| Jacobs Levy Equity Management, Inc | 0.00% | 2,187,402 | $360,046 | $22,705,233 | +$22,345,187 | +6206.20% | |
| Marshall Wace, Llp | 0.00% | 2,114,988 | $338,399 | $21,953,575 | +$21,615,176 | +6387.48% | |
| Alyeska Investment Group, L.P. | 0.00% | 2,051,442 | $337,667 | $21,293,968 | +$20,956,301 | +6206.20% | |
| Acadian Asset Management Llc | 0.00% | 1,792,135 | $293,000 | $18,602,361 | +$18,309,361 | +6248.93% | |
| Hsbc Holdings Plc | 0.00% | 1,583,118 | $267,389 | $16,432,765 | +$16,165,376 | +6045.64% | |
| Vanguard Fiduciary Trust Co | 0.00% | 1,245,392 | $205,490 | $12,927,169 | +$12,721,679 | +6190.90% | |
| Jpmorgan Chase & Co | 0.00% | 1,228,634 | $201,495 | $12,753,221 | +$12,551,726 | +6229.30% | |
| Deutsche Bank Ag\ | 0.00% | 1,106,441 | $188,095 | $11,484,858 | +$11,296,763 | +6005.88% | |
| Goldman Sachs Group Inc | 0.00% | 1,128,451 | $185,743 | $11,713,321 | +$11,527,578 | +6206.20% | |
| State Street Corp | 0.00% | 1,114,718 | $183,483 | $11,570,773 | +$11,387,290 | +6206.18% | |
| Nea Management Company, Llc | 0.01% | 1,000,000 | $164,600 | $10,380,000 | +$10,215,400 | +6206.20% | |
| Charles Schwab Investment Management Inc | 0.00% | 992,527 | $163,370 | $10,302,430 | +$10,139,060 | +6206.19% | |
| Smith, Moore & Co. | 0.01% | 900,000 | $148,140 | $9,342,000 | +$9,193,860 | +6206.20% | |
| Ishara Investments Lp | 0.10% | 820,000 | $134,972 | $8,511,600 | +$8,376,628 | +6206.20% | |
| Panagora Asset Management Inc | 0.00% | 733,216 | $120,687 | $7,610,782 | +$7,490,095 | +6206.22% | |
| Cwm, Llc | 0.00% | 319,995 | $105,118 | $3,321,548 | +$3,216,430 | +3059.83% | |
| Mariner, Llc | 0.00% | 594,719 | $97,889 | $6,173,183 | +$6,075,294 | +6206.31% | |
| Ieq Capital, Llc | 0.00% | 591,254 | $97,321 | $6,137,217 | +$6,039,896 | +6206.16% | |
| Vanguard Portfolio Management Llc | 0.00% | 544,212 | $89,795 | $5,648,921 | +$5,559,126 | +6190.91% | |
| Tudor Investment Corp Et Al | 0.00% | 479,581 | $78,939 | $4,978,051 | +$4,899,112 | +6206.20% | |
| Virtu Financial Llc | 0.00% | 463,708 | $76,000 | $4,813,289 | +$4,737,289 | +6233.28% | |
| Northern Trust Corp | 0.00% | 458,498 | $75,469 | $4,759,209 | +$4,683,740 | +6206.18% | |
| Invesco Ltd. | 0.00% | 442,268 | $72,797 | $4,590,742 | +$4,517,945 | +6206.22% |
Frequently asked questions about GOSS
Who are the largest institutional holders of GOSS?
The largest institutional holders of GOSS reported in the latest SEC Form 13F filings include D. E. Shaw & Co., Inc., 683 Capital Management, Llc, Deepcurrents Investment Group Llc, Context Capital Management, Llc, and Worth Venture Partners, Llc. InsiderSet ranks institutional holders by their latest reported GOSS position.
What is GOSS institutional ownership?
This page tracks GOSS positions reported by institutional investment managers through SEC Form 13F. GOSSAMER BIO INC (GOSS) institutional ownership on InsiderSet reflects disclosed 13F holdings among the managers we analyze, not every shareholder of the stock.
How many institutions own GOSS?
InsiderSet currently tracks 133 institutional managers reporting GOSS holdings in the latest available 13F data. This count reflects institutions included in the SEC Form 13F filings analyzed by InsiderSet and should not be interpreted as the total number of GOSS shareholders.
How much GOSS stock do institutions own?
Institutional investment managers disclosed approximately $59.87M in GOSS holdings for Q2 2026. This figure is reported 13F value as of the filing period, not necessarily today's market value.
When was GOSS institutional ownership last updated?
The latest GOSS institutional ownership data on InsiderSet is based on SEC Form 13F filings for the quarter ended June 30, 2026. Form 13F filings are generally reported after the quarter ends, so the holdings shown represent the latest publicly disclosed positions rather than real-time institutional holdings.
Are institutional GOSS holdings real-time?
No. Form 13F data is not real-time. It represents positions reported by institutional investment managers as of the end of the reporting quarter. An institution may have changed its GOSS position after the reporting date.
Are institutions buying or selling GOSS?
Institutional buying and selling can be analyzed by comparing GOSS positions across consecutive 13F reporting periods. InsiderSet's GOSS Ownership Changes page shows institutions that increased, reduced, initiated, or exited positions based on reported 13F holdings. View GOSS ownership changes.
How has GOSS institutional ownership changed over time?
InsiderSet tracks GOSS institutional holdings across multiple 13F reporting periods, allowing investors to compare institutional holder counts, reported value, and reported shares over time.