GLSI Greenwich LifeSciences, Inc.
Greenwich LifeSciences, Inc. (GLSI) Institutional Ownership
What the institutions did with GLSI last quarter, from their 13F filings. Counting managers rather than shares is the point: a single index fund adding to a position tells you far less than four hundred separate managers all deciding to. Positions as reported for the quarter ended June 30, 2026.
Every manager below opens. Subscribers can see any firm's whole portfolio — every position, its weight, and what they bought, trimmed and exited last quarter.
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Each block is one manager, sized by shares held and colored by how much they moved the position last quarter. Green added, red cut, grey stood pat.
Largest holders
| Manager | Shares | % of reported |
|---|---|---|
| BlackRock, Inc. | 485.9K | 28.8% |
| VANGUARD CAPITAL MANAGEMENT LLC | 278.2K | 16.5% |
| GEODE CAPITAL MANAGEMENT, LLC | 168.2K | 10.0% |
| STATE STREET CORP | 143.1K | 8.5% |
| VANGUARD PORTFOLIO MANAGEMENT LLC | 80.9K | 4.8% |
| NORTHERN TRUST CORP | 80.2K | 4.8% |
| Bank of New York Mellon Corp | 47.9K | 2.8% |
| VANGUARD FIDUCIARY TRUST CO | 46.0K | 2.7% |
| MORGAN STANLEY | 43.4K | 2.6% |
| GOLDMAN SACHS GROUP INC | 39.3K | 2.3% |
| Russell Investments Group, Ltd. | 34.4K | 2.0% |
| JANE STREET GROUP, LLC | 27.7K | 1.6% |
| UBS Group AG | 23.4K | 1.4% |
| STATE OF WISCONSIN INVESTMENT BOARD | 22.6K | 1.3% |
| GSA CAPITAL PARTNERS LLP | 19.5K | 1.2% |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | 17.9K | 1.1% |
| STRS OHIO | 17.8K | 1.1% |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | 17.1K | 1.0% |
| Vanguard Global Advisers, LLC | 11.9K | 0.7% |
| Ancora Advisors LLC | 10.7K | 0.6% |
| STIFEL FINANCIAL CORP | 10.0K | 0.6% |
| RAYMOND JAMES FINANCIAL INC | 9.1K | 0.5% |
| RHUMBLINE ADVISERS | 8.4K | 0.5% |
| WELLS FARGO & COMPANY/MN | 6.1K | 0.4% |
| DEUTSCHE BANK AG\ | 5.4K | 0.3% |
Largest changes
| Manager | Action | Previous | Current | Change |
|---|---|---|---|---|
| Nuveen, LLC | Sold Out | 88.7K | 0 | -88.7K |
| BlackRock, Inc. | Increased | 433.9K | 485.9K | +52.0K |
| JANE STREET GROUP, LLC | New | 0 | 27.7K | +27.7K |
| Ancora Advisors LLC | Reduced | 37.5K | 10.7K | -26.8K |
| SEI INVESTMENTS CO | Sold Out | 26.1K | 0 | -26.1K |
| MARSHALL WACE, LLP | Sold Out | 25.7K | 0 | -25.7K |
| VANGUARD PORTFOLIO MANAGEMENT LLC | Increased | 58.9K | 80.9K | +22.0K |
| Informed Momentum Co LLC | Sold Out | 21.4K | 0 | -21.4K |
| VANGUARD CAPITAL MANAGEMENT LLC | Reduced | 298.3K | 278.2K | -20.1K |
| GSA CAPITAL PARTNERS LLP | New | 0 | 19.5K | +19.5K |
| MASSACHUSETTS FINANCIAL SERVICES CO /MA/ | New | 0 | 17.9K | +17.9K |
| MILLENNIUM MANAGEMENT LLC | Sold Out | 17.4K | 0 | -17.4K |
| MORGAN STANLEY | Increased | 29.8K | 43.4K | +13.6K |
| GEODE CAPITAL MANAGEMENT, LLC | Increased | 155.5K | 168.2K | +12.7K |
| STIFEL FINANCIAL CORP | New | 0 | 10.0K | +10.0K |
| STATE STREET CORP | Increased | 133.9K | 143.1K | +9.2K |
| Russell Investments Group, Ltd. | Reduced | 39.7K | 34.4K | -5.3K |
| NORTHERN TRUST CORP | Increased | 75.1K | 80.2K | +5.1K |
| STRS OHIO | Increased | 13.7K | 17.8K | +4.1K |
| MetLife Investment Management, LLC | Sold Out | 3.8K | 0 | -3.8K |
| WELLS FARGO & COMPANY/MN | Increased | 2.4K | 6.1K | +3.7K |
| CITIGROUP INC | Increased | 340 | 3.2K | +2.9K |
| STATE OF WISCONSIN INVESTMENT BOARD | Increased | 20.3K | 22.6K | +2.3K |
| UBS Group AG | Increased | 21.1K | 23.4K | +2.3K |
| Vanguard Global Advisers, LLC | Increased | 10.3K | 11.9K | +1.5K |
| Bank of New York Mellon Corp | Increased | 46.5K | 47.9K | +1.4K |
| VANGUARD FIDUCIARY TRUST CO | Increased | 44.9K | 46.0K | +1.1K |
| RAYMOND JAMES FINANCIAL INC | Reduced | 9.8K | 9.1K | -700 |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | Increased | 16.6K | 17.1K | +495 |
| NISA INVESTMENT ADVISORS, LLC | Reduced | 1.2K | 775 | -425 |
| Tower Research Capital LLC (TRC) | Increased | 1.4K | 1.8K | +371 |
| ROYAL BANK OF CANADA | Increased | 6 | 351 | +345 |
| RHUMBLINE ADVISERS | Increased | 8.0K | 8.4K | +341 |
| BARCLAYS PLC | Reduced | 1.2K | 850 | -309 |
| JPMORGAN CHASE & CO | Increased | 2.6K | 2.9K | +302 |
| Legal & General Group Plc | Increased | 516 | 789 | +273 |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | Reduced | 339 | 90 | -249 |
| JONES FINANCIAL COMPANIES LLLP | Increased | 3.2K | 3.4K | +200 |
| GOLDMAN SACHS GROUP INC | Reduced | 39.5K | 39.3K | -192 |
| DEUTSCHE BANK AG\ | Increased | 5.2K | 5.4K | +189 |
| BNP PARIBAS FINANCIAL MARKETS | Reduced | 1.7K | 1.6K | -135 |
| FMR LLC | Reduced | 4.1K | 4.0K | -111 |
| GAMMA Investing LLC | Increased | 27 | 58 | +31 |
| MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd. | Reduced | 3.1K | 3.1K | -30 |
| Arax Advisory Partners | Increased | 1 | 27 | +26 |
| Farther Finance Advisors, LLC | Reduced | 1.3K | 1.3K | -19 |
| Sterling Capital Management LLC | Reduced | 40 | 24 | -16 |
| US BANCORP \DE\ | Sold Out | 15 | 0 | -15 |
| NATIONAL BANK OF CANADA /FI/ | New | 0 | 14 | +14 |
| SJS Investment Consulting Inc. | New | 0 | 11 | +11 |
| OSAIC HOLDINGS, INC. | Sold Out | 6 | 0 | -6 |
| Root Financial Partners, LLC | Sold Out | 5 | 0 | -5 |
| PNC FINANCIAL SERVICES GROUP, INC. | Reduced | 10 | 5 | -5 |
| EverSource Wealth Advisors, LLC | Reduced | 8 | 5 | -3 |
| ROTHSCHILD INVESTMENT LLC | Sold Out | 1 | 0 | -1 |
| MAI Capital Management | Sold Out | 1 | 0 | -1 |
13F filings are due 45 days after quarter end and cover long positions in U.S.-listed equities only, so this is a lagged and partial picture: shorts, bonds and foreign listings never appear. Options positions are excluded here rather than folded into the share counts. Political ownership is coming.