ICU · SeaStar Medical Holding Corp · Holdings

$3.13 +0.03 (+0.97%) At close · Sep 10

Market Cap

$13.79M

4.41M

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: 31

Total Value: $582,080

Total Shares: 1,223,710

Institutional Ownership Trend

23 quarters

Holder Concentration

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

Top Holder

31.3%

−11.0 pts

Top 5

88.5%

−8.6 pts

Top 10

99.8%

−0.1 pts

HHI

1,997

Moderately concentrated−834

Quarterly Activity

vs Mar 31, 2026

New

Increased

Decreased

Sold Out

Unchanged

Holder count: +4

Institutional value: +18.9%

Shares held: +9.1%

Top Buyers

vs Mar 31, 2026

Institution	Added	Now Holds
Mega UBS Group AG	+30,689	32,199
Mega VANGUARD CAPITAL MANAGEMENT LLC	+4,300	33,091
Mega PNC FINANCIAL SERVICES GROUP, INC.	+3,195	4,943
Large Clear Street Group Inc.	+200	46,690

Top Sellers

vs Mar 31, 2026

Institution	Sold	Now Holds
Mega JANE STREET GROUP, LLC	−15,326	12,634
Mega GEODE CAPITAL MANAGEMENT, LLC	−6,049	49,593
Mid WOLVERINE ASSET MANAGEMENT LLC	−1,200	11,081
Mid Tower Research Capital LLC (TRC)	−39	1,356
Large OSAIC HOLDINGS, INC.	−35	195

Top New Positions

vs Mar 31, 2026

Institution	Acquired	Value (USD)
Mega NORTHERN TRUST CORP	10,402	$38,175
Mega BARCLAYS PLC	4	$14
Small Caitong International Asset Management Co., Ltd	2	$7
Mid Virtu Financial LLC	40,316	$0
Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP	36,179	$0

Top Sold-Out Positions

vs Mar 31, 2026

Institution	Previously Held	Last Value (USD)
Mega MORGAN STANLEY	20	$74
Large CWM, LLC	1	$3
Small EQUITEC PROPRIETARY MARKETS, LLC	35,700	$0

Filter: New 7 Increased 4 Reduced 5 Sold out 3 Unchanged 15

Showing 32 of 32

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

GEODE CAPITAL MANAGEMENT, LLC

$182,005

31.27%

49,593

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	8,656	$31,767	17.5%	Defined
Held directly	40,937	$150,238	82.5%	Defined

VANGUARD CAPITAL MANAGEMENT LLC

$121,443

20.86%

33,091

UBS Group AG

$115,230

19.80%

31,398

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS AG	31,398	$115,230	100.0%	Defined

VANGUARD FIDUCIARY TRUST CO

$50,249

8.63%

13,692

JANE STREET GROUP, LLC

$46,366

7.97%

12,634

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	9,272	$34,028	73.4%	Defined
Jane Street Global Trading, LLC	3,362	$12,338	26.6%	Defined

NORTHERN TRUST CORP

$38,175

6.56%

10,402

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	10,402	$38,175	100.0%	Defined

PNC FINANCIAL SERVICES GROUP, INC.

$18,140

3.12%

4,943

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	4,943	$18,140	100.0%	Defined

Tower Research Capital LLC (TRC)

$4,976

0.85%

1,356

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)	1,356	$4,976	100.0%	Defined

BlackRock, Inc.

$3,350

0.58%

913

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

Manager	Shares	Value (USD)	% of position	Discretion
BlackRock Institutional Trust Company, N.A.	913	$3,350	100.0%	Sole

OSAIC HOLDINGS, INC.

$715

0.12%

195

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

Manager	Shares	Value (USD)	% of position	Discretion
OSAIC WEALTH, INC.	195	$715	100.0%	Defined

NewEdge Advisors, LLC

$645

0.11%

176

Vanguard Global Advisers, LLC

$605

0.10%

165

TD Waterhouse Canada Inc.

$80

0.01%

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

Manager	Shares	Value (USD)	% of position	Discretion
TORONTO DOMINION BANK	22	$80	100.0%	Defined

SBI Securities Co., Ltd.

$51

0.01%

SOA Wealth Advisors, LLC.

$22

0.00%

BARCLAYS PLC

$14

0.00%

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

Manager	Shares	Value (USD)	% of position	Discretion
BARCLAYS CAPITAL INC.	4	$14	100.0%	Defined

HighMark Wealth Management LLC

0.00%

Caitong International Asset Management Co., Ltd

0.00%

Clear Street Group Inc. ICUCW

—

46,690

TWO SIGMA SECURITIES, LLC ICUCW

—

24,322

StoneX Group Inc. ICUCW

—

11,086

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

Manager	Shares	Value (USD)	% of position	Discretion
STONEX FINANCIAL INC.	11,086	$0	—	Defined

LMR Partners LLP ICUCW

—

125,000

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

Manager	Shares	Value (USD)	% of position	Discretion
LMR PARTNERS (DIFC) Ltd	125,000	$0	—	Sole

SUSQUEHANNA INTERNATIONAL GROUP, LLP ICUCW

—

36,179

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

Manager	Shares	Value (USD)	% of position	Discretion
G1 EXECUTION SERVICES, LLC	36,179	$0	—	Other

TENOR CAPITAL MANAGEMENT Co., L.P. ICUCW

—

40,000

Cruiser Capital Advisors, LLC ICUCW

—

32,473

WOLVERINE ASSET MANAGEMENT LLC ICUCW

—

11,081

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

Manager	Shares	Value (USD)	% of position	Discretion
Wolverine Holdings, LLC	11,081	$0	—	Defined

Linden Advisors LP ICUCW

—

218,073

UBS Group AG ICUCW

—

801

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

Manager	Shares	Value (USD)	% of position	Discretion
UBS Securities LLC	801	$0	—	Defined

Virtu Financial LLC ICUCW

—

40,316

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

Manager	Shares	Value (USD)	% of position	Discretion
Virtu Americas LLC	40,316	$0	—	Defined

GOLDMAN SACHS GROUP INC ICUCW

—

211,381

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

Manager	Shares	Value (USD)	% of position	Discretion
GOLDMAN SACHS & CO. LLC	211,381	$0	—	Defined

BOOTHBAY FUND MANAGEMENT, LLC ICUCW

—

245,200

MILLENNIUM MANAGEMENT LLC ICUCW

—

22,500

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

Manager	Shares	Value (USD)	% of position	Discretion
MORGAN STANLEY SMITH BARNEY LLC	20	$74	100.0%	Defined

Key facts CIK 1831868 CUSIP 81256L302 13F (30d) 11 filings 11 filers Visit website Investor relations