How is institutional ownership of ICU changing?

ICU institutional ownership rose by 0.66 percentage points quarter-over-quarter, with a net change of +1 holders.

How concentrated is ICU ownership among the top holders?

The top 10 institutions account for 99.7% of all reported 13F value in ICU, and the top 25 account for 100.0%.

Where does this ICU institutional ownership data come from?

All data is sourced from SEC Form 13F filings, which institutional investment managers with at least $100M in assets are required to file each quarter. We process every 13F filing from EDGAR and recompute the aggregates after each cycle. Insider transactions are sourced from Form 4 filings.

SeaStar Medical Holding Corporation (ICU) Institutional Ownership Q2 2026 | Top 13F Holders

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Institutional ownership increased this quarter (+0.66 pp), though top 10 holders maintain a highly concentrated 99.7% of institutional value.

Institutional Ownership3.9%$582K total value · ▲ +0.66 pp vs prior quarter

Smart Money Score63 / 100Bullish

Institutions & Flow18 holders+2 net flow (+3 / -1)

AI Insights & Key Takeaways

Positive Institutional Flow (+2)
Jane Street Group, Llc maintains a significant position
Top 10 holders control 99.7% of institutional value
No Insider Signal

Top Institutional Holders of ICU

Ranked by reported Q2 2026 13F market value

Top 10 Holders

99.7%

Top 25 Holders

100.0%

Share of total reported institutional value in ICU held by the largest 10 / 25 filers.

#	Institution	Shares Held	Market Value	QoQ Change	Ownership %	% of Fund
1	GEODE CAPITAL MANAGEMENT, LLC	50K	$182K	-10.9%	1.214%	0.00%
2	VANGUARD CAPITAL MANAGEMENT LLC	33K	$121K	+14.9%	0.810%	0.00%
3	UBS Group AG	31K	$115K	+3859.4%	0.769%

Quarterly Institutional Activity

Filings activity in ICU during Q2 2026, grouped by how each filer changed its position.

MORGAN STANLEY$74

ICU Institutional Ownership by Quarter

8 quarters of 13F filings · Δ columns show change vs prior quarter

Quarter	Inst. Holders	Δ Holders	Ownership %	Δ Ownership	Total 13F Value	Δ Value
Q2 2026	18	+5.9%	3.88%	+0.66 pp	$1M	+19%
Q1 2026	17	19%	3.22%	+1.27 pp	$0M	+156%
Q4 2025	21	25%	1.95%	0.73 pp	$0M	69%
Q3 2025	28	+3.7%	2.68%	+1.58 pp	$1M	+226%
Q2 2025	27	+0.0%	1.10%	1.11 pp	$0M	87%
Q1 2025	27	+29%

ICU — Frequently Asked Questions

Quick answers to the most common questions about buying ICU stock.

What percentage of ICU is owned by institutions?

Based on Q2 2026 13F filings, institutional ownership of SeaStar Medical Holding Corporation stands at 3.9%, held across 18 reporting institutions.

Who is the largest institutional holder of ICU?

GEODE CAPITAL MANAGEMENT, LLC is the largest reported institutional holder of ICU, with approximately 49,593 shares worth $0.00B as of Q2 2026.

Is ICU a hedge fund favorite?

Yes — 1 widely-followed marquee investor appear among the top 25 institutional holders of ICU, including JANE STREET GROUP, LLC.

What is ICU's Smart Money Score?

Our composite Smart Money Score for ICU is 63 out of 100 (Bullish). It combines net institutional buying activity, ownership shift, marquee investor presence, and holder-count growth.

How many institutions bought ICU this quarter?