GOSS · Company research
Gossamer Bio, Inc. Common Stock (GOSS): Ownership & Institutional Holders
Reported institutional positions. Filing dates and sources matter.
RESEARCH CONTEXT
Understand the numbers
Reported institutional positions. Filing dates and sources matter. Use period, currency, units and source fields when interpreting values.
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Ownership & Institutional Holders data
Database-backed records only
| holder name | cik | period end | shares held | market value | ownership percent | shares change | shares change percent | filing date | data source |
|---|---|---|---|---|---|---|---|---|---|
| Ground Swell Capital, LLC | 1534450 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 10000 | 1646 | — | — | — | Aug 5, 2026 | SEC_13F_DATASET |
| RHUMBLINE ADVISERS | 1115418 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 88599 | 14618 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| SMITH, MOORE & CO. | 200724 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 900000 | 148140 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| JPMORGAN CHASE & CO | 19617 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1198131 | 196493 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| Octagon Capital Advisors LP | 1839435 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 7750000 | 1275650 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Allworth Financial LP | 1555170 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 8487 | 1397 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| TD Waterhouse Canada Inc. | 1999606 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 15 | 3 | — | — | — | Jul 27, 2026 | SEC_13F_DATASET |
| Invesco Ltd. | 914208 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 442268 | 72797 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Cambridge Investment Research Advisors, Inc. | 1419186 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 42800 | 7 | — | — | — | Jul 27, 2026 | SEC_13F_DATASET |
| SG Americas Securities, LLC | 1313360 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 146737 | 24 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Pallas Capital Advisors LLC | 1862282 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 12879 | 2120 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| DEUTSCHE BANK AG\ | 948046 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1106441 | 188095 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 884546 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 992527 | 163370 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Hennion & Walsh Asset Management, Inc. | 1861642 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1098914 | 180881 | — | — | — | Jul 8, 2026 | SEC_13F_DATASET |
| NORTHERN TRUST CORP | 73124 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 625 | 103 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| OSAIC HOLDINGS, INC. | 1677044 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 120204 | 19232 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| OPPENHEIMER & CO INC | 822581 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 13000 | 2140 | — | — | — | Aug 3, 2026 | SEC_13F_DATASET |
| IEQ CAPITAL, LLC | 1779789 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 591254 | 97321 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Tower Research Capital LLC (TRC) | 1533421 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 66366 | 10924 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Heritage Wealth Advisors | 1591122 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1000 | 165 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| TWO SIGMA INVESTMENTS, LP | 1179392 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 7432001 | 1223307 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| CAPTRUST FINANCIAL ADVISORS | 1512024 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 81778 | 13461 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Rothschild Wealth LLC | 1811345 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 16210 | 2668 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Volterra Technologies LP | 1833567 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 11400 | 1876 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Rialto Wealth Management, LLC | 2054966 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 20552 | 3383 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| BRIGHTON JONES LLC | 1360798 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 32308 | 5318 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| HighTower Advisors, LLC | 1462245 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 144358 | 23761 | — | — | — | Aug 5, 2026 | SEC_13F_DATASET |
| VANGUARD CAPITAL MANAGEMENT LLC | 2100119 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 9416023 | 1553644 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| SAMSARA BIOCAPITAL, LLC | 1744967 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 7222559 | 1188833 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Wealth Enhancement Trust Services, Inc. | 2067696 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 3039 | 500 | — | — | — | Jul 22, 2026 | SEC_13F_DATASET |
| ROTHSCHILD INVESTMENT LLC | 85338 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1590 | 262 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| MARSHALL WACE, LLP | 1318757 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2114988 | 338399 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| Evernest Financial Advisors, LLC | 2009530 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 26769 | 4406 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| Arax Advisory Partners | 1586767 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 108204 | 17810 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| VestGen Advisors, LLC | 2050130 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 16177 | 2663 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| STATE STREET CORP | 93751 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1114718 | 183483 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Clearstead Advisors, LLC | 842775 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 23550 | 3877 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| WADDELL & ASSOCIATES, LLC | 1776757 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 261798 | 43092 | — | — | — | Jul 15, 2026 | SEC_13F_DATASET |
| Corient Private Wealth LP | 1948780 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5625509 | 925959 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| China Universal Asset Management Co., Ltd. | 1906594 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 37352 | 6148 | — | — | — | Jul 24, 2026 | SEC_13F_DATASET |
| EverSource Wealth Advisors, LLC | 1710537 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 70 | 12 | — | — | — | Jul 24, 2026 | SEC_13F_DATASET |
| CITIZENS FINANCIAL GROUP INC/RI | 759944 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 13478 | 2218 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| BOOTHBAY FUND MANAGEMENT, LLC | 1549230 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 276000 | 177416 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| ROYAL BANK OF CANADA | 1000275 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 18188 | 3000 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Skaana Management L.P. | 1860998 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 40200 | 6617 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| ARCH Venture Management, LLC | 1274403 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 8055916 | 1326004 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| LPL Financial LLC | 1403438 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 332534 | 54735 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| Nuveen, LLC | 1871926 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 17324 | 2852 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| Rockefeller Capital Management L.P. | 1739439 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 105200 | 17316 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| IFP Advisors, Inc | 1641866 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 5545 | 913 | — | — | — | Jul 20, 2026 | SEC_13F_DATASET |
| MAI Capital Management | 1040197 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 16540 | 2723 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Focus Partners Wealth | 1542153 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 92848 | 15283 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| PNC Financial Services Group, Inc. | 713676 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2171 | 358 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| ADAR1 Capital Management, LLC | 1940272 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 212531 | 34983 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| HSBC HOLDINGS PLC | 873630 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1583118 | 267389 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Worth Venture Partners, LLC | 1696778 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 25017881 | 4117943 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| Atlas Legacy Advisors, LLC | 2054111 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 12008 | 1977 | — | — | — | Jul 31, 2026 | SEC_13F_DATASET |
| Kestra Advisory Services, LLC | 1830819 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 28500 | 4691 | — | — | — | Jul 28, 2026 | SEC_13F_DATASET |
| D. E. Shaw & Co., Inc. | 1009207 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 40569854 | 6677798 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Quarry LP | 1965207 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 100000 | 16460 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| AlphaCore Capital LLC | 1713662 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 69482 | 11437 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| PANAGORA ASSET MANAGEMENT INC | 883677 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 733216 | 120687 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| Virtu Financial LLC | 1533964 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 463708 | 76 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| CreativeOne Wealth, LLC | 1739728 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 17434 | 2870 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| GSA CAPITAL PARTNERS LLP | 1362033 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 14986947 | 2467 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| MERCER GLOBAL ADVISORS INC /ADV | 853758 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 297863 | 49028 | — | — | — | Aug 11, 2026 | SEC_13F_DATASET |
| ENVESTNET ASSET MANAGEMENT INC | 1407543 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 18835 | 3100 | — | — | — | Aug 3, 2026 | SEC_13F_DATASET |
| Caerus Investment Advisors, LLC | 1862682 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 13797 | 2271 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Alyeska Investment Group, L.P. | 1453072 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2051442 | 337667 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| Focus Partners Advisor Solutions, LLC | 1868872 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 27305 | 4494 | — | — | — | Aug 6, 2026 | SEC_13F_DATASET |
| Bull Harbor Capital LLC | 2135047 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 51235 | 8433 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| JACOBS LEVY EQUITY MANAGEMENT, INC | 884414 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 2187402 | 360046 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| VANGUARD FIDUCIARY TRUST CO | 933478 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1245392 | 205490 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| BCV Asset Management Inc. | 2110721 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 106500 | 17502 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
| 683 Capital Management, LLC | 1404574 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 39198868 | 6452134 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| BlackRock, Inc. | 2012383 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 4269516 | 702762 | — | — | — | Aug 7, 2026 | SEC_13F_DATASET |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 2100121 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 544212 | 89795 | — | — | — | Aug 13, 2026 | SEC_13F_DATASET |
| BANK OF AMERICA CORP /DE/ | 70858 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 352896 | 57875 | — | — | — | Aug 14, 2026 | SEC_13F_DATASET |
| PRUDENTIAL FINANCIAL INC | 1137774 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 227550 | 37455 | — | — | — | Aug 12, 2026 | SEC_13F_DATASET |
| NISA INVESTMENT ADVISORS, LLC | 937615 | Tue Jun 30 2026 00:00:00 GMT+0000 (Coordinated Universal Time) | 1883 | 310 | — | — | — | Aug 10, 2026 | SEC_13F_DATASET |
Informational research only, not financial advice. Forecasts are uncertain and can be wrong.