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.
Sign in or subscribeLargest 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 |
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.