GLSI · Greenwich LifeSciences, Inc. · Holdings

$18.99 +0.60 (+3.26%) At close · Sep 18

Russell 2000 member Rebalance outlook locked

Market Cap

$269.93M

14.68M

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →

Quarter:

Holders: 57

Total Value: $39,578,784

Total Shares: 1,687,077

Institutional Ownership Trend

24 quarters

Holder Concentration

Across 57 13F filers · Δ vs Mar 31, 2026

Top Holder

28.8%

+3.5 pts

Top 5

68.5%

+3.7 pts

Top 10

83.8%

+3.5 pts

HHI

1,363

Broadly held+172

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: -7

Institutional value: -3.8%

Shares held: -1.5%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega BlackRock, Inc.	+51,994	485,854
Mega VANGUARD PORTFOLIO MANAGEMENT LLC	+21,950	80,861
Mega MORGAN STANLEY	+13,620	43,447
Mega GEODE CAPITAL MANAGEMENT, LLC	+12,713	168,179
Mega STATE STREET CORP	+9,211	143,086

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mid Ancora Advisors LLC	−26,760	10,740
Mega VANGUARD CAPITAL MANAGEMENT LLC	−20,076	278,190
Mega Russell Investments Group, Ltd.	−5,344	34,353
Mega RAYMOND JAMES FINANCIAL INC	−700	9,137
Large NISA INVESTMENT ADVISORS, LLC	−425	775

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mega JANE STREET GROUP, LLC	27,694	$649,700
Mid GSA CAPITAL PARTNERS LLP	19,543	$458,478
Mega MASSACHUSETTS FINANCIAL SERVICES CO /MA/	17,922	$420,449
Large STIFEL FINANCIAL CORP	10,023	$235,139
Mega NATIONAL BANK OF CANADA /FI/	14	$328

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mega Nuveen, LLC	88,717	$2,130,981
Large SEI INVESTMENTS CO	26,088	$626,633
Large MARSHALL WACE, LLP	25,658	$616,304
Mid Informed Momentum Co LLC	21,430	$514,748
Mega MILLENNIUM MANAGEMENT LLC	17,398	$417,899

Filter: New 6 Increased 24 Reduced 15 Sold out 13 Unchanged 12

Showing 57 of 57

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

BlackRock, Inc.

$11,398,131

28.80%

485,854

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BLACKROCK FINANCIAL MANAGEMENT INC/DE	2,648	$62,122	0.5%	Sole
BlackRock Investment Management, LLC	18,336	$430,162	3.8%	Sole
BLACKROCK ADVISORS LLC	13,749	$322,551	2.8%	Sole
BlackRock Fund Advisors	267,482	$6,275,127	55.1%	Sole
BlackRock Institutional Trust Company, N.A.	170,615	$4,002,627	35.1%	Sole
BlackRock Japan Co. Ltd	4,107	$96,350	0.8%	Sole
Aperio Group, LLC	8,917	$209,192	1.8%	Sole

VANGUARD CAPITAL MANAGEMENT LLC

$6,526,337

16.49%

278,190

GEODE CAPITAL MANAGEMENT, LLC

$3,945,479

9.97%

168,179

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GEODE CAPITAL MANAGEMENT TRUST COMPANY, LLC	24,487	$574,465	14.6%	Defined
Held directly	143,692	$3,371,014	85.4%	Defined

STATE STREET CORP

$3,356,797

8.48%

143,086

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STATE STREET GLOBAL ADVISORS EUROPE LIMITED joint	143,086	$3,356,797	100.0%	Defined

VANGUARD PORTFOLIO MANAGEMENT LLC

$1,896,999

4.79%

80,861

NORTHERN TRUST CORP

$1,882,147

4.76%

80,228

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
NORTHERN TRUST CO joint	66,108	$1,550,893	82.4%	Defined
NORTHERN TRUST GLOBAL INVESTMENTS LTD	13,217	$310,070	16.5%	Defined
DWS INVESTMENT MANAGEMENT AMERICAS, INC joint	903	$21,184	1.1%	Other

Bank of New York Mellon Corp

$1,123,732

2.84%

47,900

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Investments Corporation	4,790	$112,373	10.0%	Defined
The Bank of New York Mellon	10,218	$239,714	21.3%	Defined
BNY Mellon, NA joint	105	$2,463	0.2%	Defined
Newton Investment Management North America, LLC	32,786	$769,159	68.4%	Defined
Held directly	1	$23	0.0%	Defined

VANGUARD FIDUCIARY TRUST CO

$1,078,338

2.72%

45,965

MORGAN STANLEY

$1,019,263

2.58%

43,447

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY & CO INTERNATIONAL PLC	132	$3,096	0.3%	Defined
MORGAN STANLEY & CO. LLC	11,740	$275,420	27.0%	Defined
MORGAN STANLEY CAPITAL SERVICES, LLC	21,206	$497,492	48.8%	Defined
MORGAN STANLEY SMITH BARNEY LLC	7,830	$183,691	18.0%	Defined
PARAMETRIC PORTFOLIO ASSOCIATES LLC	2,539	$59,564	5.8%	Defined

GOLDMAN SACHS GROUP INC

$922,658

2.33%

39,329

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS ASSET MANAGEMENT, L.P.	39,329	$922,658	100.0%	Defined

Russell Investments Group, Ltd.

$805,919

2.04%

34,353

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Russell Investment Management, LLC	19,755	$463,451	57.5%	Defined
Russell Investments Capital, LLC	5,382	$126,261	15.7%	Defined
Russell Investments France SAS	3,811	$89,406	11.1%	Defined
Russell Investments Trust Company	5,405	$126,801	15.7%	Defined

JANE STREET GROUP, LLC

$649,700

1.64%

27,694

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Jane Street Capital, LLC	10,517	$246,728	38.0%	Defined
Jane Street Global Trading, LLC	17,177	$402,972	62.0%	Defined

UBS Group AG

$549,174

1.39%

23,409

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Financial Services Inc	68	$1,595	0.3%	Defined
UBS AG	19,847	$465,610	84.8%	Defined
UBS Switzerland AG	3,494	$81,969	14.9%	Defined

STATE OF WISCONSIN INVESTMENT BOARD

$531,110

1.34%

22,639

GSA CAPITAL PARTNERS LLP

$458,478

1.16%

19,543

MASSACHUSETTS FINANCIAL SERVICES CO /MA/

$420,449

1.06%

17,922

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
MFS Heritage Trust CO	3,031	$71,107	16.9%	Defined
Held directly	14,891	$349,342	83.1%	Sole

STRS OHIO

$417,588

1.06%

17,800

CHARLES SCHWAB INVESTMENT MANAGEMENT INC

$401,119

1.01%

17,098

Vanguard Global Advisers, LLC

$278,493

0.70%

11,871

Ancora Advisors LLC

$251,960

0.64%

10,740

STIFEL FINANCIAL CORP

$235,139

0.59%

10,023

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
STIFEL NICOLAUS & CO INC \MO\	10,023	$235,139	100.0%	Defined

RAYMOND JAMES FINANCIAL INC

$214,354

0.54%

9,137

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RAYMOND JAMES & ASSOCIATES	2,837	$66,556	31.0%	Defined
Raymond James Financial Services Advisors, Inc.	6,300	$147,798	69.0%	Defined

RHUMBLINE ADVISERS

$196,759

0.50%

8,387

WELLS FARGO & COMPANY/MN

$144,138

0.36%

6,144

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
WELLS FARGO BANK N A	6,144	$144,138	100.0%	Defined

DEUTSCHE BANK AG\

$125,533

0.32%

5,351

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
DWS INVESTMENT MANAGEMENT AMERICAS, INC	125	$2,932	2.3%	Defined
DWS Investments UK Ltd	5,226	$122,601	97.7%	Defined

FMR LLC

$93,745

0.24%

3,996

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Fidelity Management & Research Co LLC	3,978	$93,323	99.5%	Defined
STRATEGIC ADVISERS LLC	18	$422	0.5%	Defined

JONES FINANCIAL COMPANIES LLLP

$79,764

0.20%

3,400

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Edward D. Jones & Co., L.P.	3,400	$79,764	100.0%	Sole

CITIGROUP INC

$74,883

0.19%

3,192

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Citigroup Financial Products Inc. joint	3,192	$74,883	100.0%	Defined

MIRAE ASSET GLOBAL ETFS HOLDINGS Ltd.

$72,772

0.18%

3,102

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Global X Management CO LLC joint	3,102	$72,772	100.0%	Defined

JPMORGAN CHASE & CO

$68,173

0.17%

2,906

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
JPMorgan Chase Bank, N.A.	2,793	$65,523	96.1%	Defined
J.P. Morgan Securities plc	113	$2,650	3.9%	Defined

Police & Firemen's Retirement System of New Jersey

$64,937

0.16%

2,768

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Mellon Capital	2,768	$64,937	100.0%	Defined

NFSG Corp

$49,266

0.12%

2,100

Tower Research Capital LLC (TRC)

$42,016

0.11%

1,791

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Latour Trading LLC (Latour)	1,791	$42,016	100.0%	Defined

BNP PARIBAS ARBITRAGE, SA

$37,465

0.09%

1,597

Farther Finance Advisors, LLC

$30,498

0.08%

1,300

NEW YORK STATE COMMON RETIREMENT FUND

$28,152

0.07%

1,200

BARCLAYS PLC

$19,940

0.05%

850

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS BANK PLC	844	$19,800	99.3%	Defined
BARCLAYS CAPITAL INC.	6	$140	0.7%	Defined

Legal & General Group Plc

$18,509

0.05%

789

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Legal & General Investment Management America Inc	789	$18,509	100.0%	Defined

NISA INVESTMENT ADVISORS, LLC

$18,181

0.05%

775

Ameritas Investment Partners, Inc.

$13,724

0.03%

585

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
EATON VANCE MANAGEMENT	585	$13,724	100.0%	Other

UBS AM, a distinct business unit of UBS ASSET MANAGEMENT AMERICAS LLC

$12,222

0.03%

521

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
UBS Group AG	521	$12,222	100.0%	Defined

ROYAL BANK OF CANADA

$8,233

0.02%

351

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
RBC CMA LTD.	204	$4,785	58.1%	Defined
RBC Capital Markets, LLC	147	$3,448	41.9%	Defined

Washington Trust Advisors, Inc.

$4,692

0.01%

200

Optiver Holding B.V.

$2,252

0.01%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Optiver VOF	96	$2,252	100.0%	Defined

CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM

$2,111

0.01%

Geneos Wealth Management Inc.

$2,064

0.01%

GAMMA Investing LLC

$1,360

0.00%

North Star Investment Management Corp.

$1,196

0.00%

Arax Advisory Partners

$633

0.00%

Sterling Capital Management LLC

$563

0.00%

NATIONAL BANK OF CANADA /FI/

$328

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
National Bank Financial Inc.	14	$328	100.0%	Defined

Federation des caisses Desjardins du Quebec

$304

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Desjardins Securities inc.	13	$304	100.0%	Defined

Allworth Financial LP

$281

0.00%

SJS Investment Consulting Inc.

$258

0.00%

CVA Family Office, LLC

$234

0.00%

PNC FINANCIAL SERVICES GROUP, INC.

$117

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
PNC Bank, National Association	5	$117	100.0%	Defined

EverSource Wealth Advisors, LLC

$117

0.00%

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
TIAA CREF INVESTMENT MANAGEMENT LLC joint	80,595	$1,935,891	90.8%	Defined
TEACHERS ADVISORS, LLC joint	8,122	$195,090	9.2%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
SEI TRUST CO	26,088	$626,633	100.0%	Sole

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
Marshall Wace North America L.P. joint	25,658	$616,304	100.0%	Other

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
METLIFE INC	3,814	$91,612	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
US BANK NATIONAL ASSOCIATION	15	$360	100.0%	Defined

This filing is a combination report: the position is filed across the managers below.

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	6	$144	100.0%	Defined

Key facts CIK 1799788 CUSIP 396879108 13F (30d) 1 filings 1 filers Visit website Investor relations