GLSI Greenwich LifeSciences, Inc.

NASDAQ
$18.22

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.

Managers compared
68
filed both this quarter and last
Managers holding
57
-5 on the quarter
Buyers
30
6 opened new
Sellers
26
11 sold out entirely
Buyer share
53.6%
of managers who traded it
Breadth
+7.1
net buyers, as a share of those trading

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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Ownership map

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.

Cut Unchanged Added Color saturates at ±50%.

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.