IDACU · Iron Dome Acquisition I Corp. · Holdings

$10.12 At close · Oct 7

Market Cap

$211.79M

21.20M

Volume · Oct 7 3900 Avg daily vol (3M) 4542

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 → See every holder of IDACU: 13F, 13D and 13G, insiders and funds →

Quarter:

Holders: 1

Total Value: $0

Total Shares: 350,000

Institutional Ownership Trend

2 quarters

Who Holds IDACU

Last 2 quarters through Sep 30, 2026 (filing window open)

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026, the newest closed quarter: 41 filers, like-for-like change —.

Holder type	Share	Filers	Change	New
Registered adviser	64.8%	23	new	23
Exempt adviser	5.7%	2	new	2
Adviser	1.4%	1	new	1
Bank	2.5%	2	new	2
Insurer	1.8%	1	new	1
Non-US	15.9%	5	new	5
Unknown	8.0%	7	new	7

Style	Share	Filers	Change	New
Systematic-like	16.5%	4	new	4
Concentrated	12.5%	4	new	4
Diversified active	71.1%	33	new	33

Turnover	Share	Filers	Change	New
Low turnover	2.1%	2	new	2
Medium turnover	53.8%	21	new	21
High turnover	40.9%	16	new	16
Unknown	3.2%	2	new	2

Holding horizon	Share	Filers	Change	New
Short horizon	39.9%	17	new	17
Medium horizon	12.2%	3	new	3
Long horizon	26.3%	10	new	10
Unknown	21.6%	11	new	11

13F book size	Share	Filers	Change	New
Under $1B	15.9%	10	new	10
$1B to $10B	39.0%	15	new	15
$10B to $100B	36.1%	11	new	11
$100B or more	9.0%	5	new	5

Client base	Share	Filers	Change	New
Individuals and high net worth	0.3%	1	new	1
Pooled investment vehicles	61.3%	20	new	20
Registered funds and BDCs	3.1%	2	new	2
Unknown	35.2%	18	new	18

Private funds	Share	Filers	Change	New
Hedge funds	62.9%	22	new	22
Other private funds	1.7%	1	new	1
Private funds, type not stated	4.5%	1	new	1
No private funds	1.4%	1	new	1
Unknown	29.5%	16	new	16

Location	Share	Filers	Change	New	Exited
United States	70.6%	31	new	31	0
Outside the US	29.4%	10	new	10	0

The Sep 30, 2026 filing window is still open, so its bar shows only the filers that have filed so far.

How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Conviction and Crowding

41 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders

2.44% of filers hold it in their top 10

Holders above 5%

median weight 0.043%

Crowding

—

shares outstanding is an issuer-wide count, not one listing's

Private-fund advisers

—

of shares outstanding

Institutional ownership

—

shares outstanding is an issuer-wide count, not one listing's

Top 10 holders

52.6%

of 13F shares, Herfindahl 0.042

Active holders

—

like-for-like share change of active filers

5% stakes on record

0 13D, 0 13G

How long holders have held it value-weighted 1.0 quarters

Under 1 year 100.0% 1 to 3 years 0.000% 3 years or more 0.000% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Estimated Holder Cost Basis

Quarter ended Jun 30, 2026, on that quarter's share basis

Estimated, never filed: each 13F buy is costed at its quarter's average traded price and each sale keeps the average cost, so this is what holders paid on average if they traded evenly through each quarter.

Estimated avg cost

$10.04

estimated per share

Quarter-end price

$10.10

implied by 13F values

Estimated gain or loss

+0.6%

price against the estimated cost

Estimated at a loss

0.000%

of costed 13F value

Estimated cost covers 100.0% of the 13F shares; positions already held when a filer's 13F history starts, or bought in a quarter without a trusted average price, have no estimate.

Shared Holders

Companies IDACU's active holders also own, quarter ended Jun 30, 2026

#	Company	Shared holders	Similarity
1	JENA JENA ACQUISITION Corp II	13	0.685
2	IRAB Iris Acquisition Corp II	12	0.676
3	SOUL Soulpower Acquisition Corp.	14	0.639
4	DNMX Dynamix Corp III	13	0.623
5	ACGC ACP Holdings Acquisition Corp.	13	0.613
6	SBXE SilverBox Corp V	11	0.606
7	OTGA OTG Acquisition Corp. I	14	0.602
8	BWIV Blue Water Acquisition Corp. IV	9	0.581
9	TVIV Texas Ventures Acquisition IV Corp	10	0.577
10	MZYX MOZAYYX Acquisition Corp.	11	0.568

Shareholder Targets

13F filers that own its peers but not IDACU, quarter ended Jun 30, 2026

Found through its holder-overlap peers: JENA, IRAB, SOUL, DNMX, ACGC, SBXE, OTGA, BWIV, TVIV, MZYX, PAII, FVAV, CAES, QLEP, BEBE, JACS, COPL, NTWO, QRED, WPAC. 99 filers in all.

#	Filer	In peers	Of book	Largest peers
1	D. E. Shaw & Co., Inc. Unknown, Systematic-like	$102,207,305 16 held	0.070%	JACS, SOUL, PAII
2	WOLVERINE ASSET MANAGEMENT LLC Registered adviser, Diversified active	$80,141,396 15 held	3.35%	SOUL, NTWO, JACS
3	METEORA CAPITAL, LLC Adviser, Diversified active	$76,737,631 11 held	7.42%	DNMX, JENA, CAES
4	Karpus Management, Inc. Adviser, Diversified active	$67,286,857 8 held	1.96%	WPAC, COPL, ACGC
5	SONA ASSET MANAGEMENT (US) LLC Registered adviser, Diversified active	$53,618,655 14 held	2.50%	FVAV, IRAB, SBXE
6	HIGHBRIDGE CAPITAL MANAGEMENT LLC Registered adviser, Diversified active	$51,855,357 7 held	3.07%	QRED, COPL, JACS
7	MMCAP International Inc. SPC Unknown, Diversified active	$49,415,665 5 held	4.78%	MZYX, CAES, SBXE
8	MIZUHO SECURITIES USA LLC Unknown, Index-like	$49,201,410 13 held	0.780%	COPL, JACS, PAII
9	Wealthspring Capital LLC Registered adviser, Diversified active	$48,735,525 11 held	14.2%	TVIV, BWIV, NTWO
10	Verition Fund Management LLC Registered adviser, Diversified active	$47,597,793 13 held	0.370%	JENA, TVIV, DNMX

Quarterly Activity

vs Jun 30, 2026

New

Increased

Decreased

Sold Out

Unchanged

New and Sold Out count only filers that reported a 13F for both quarters: a first-time filer's book is not a buy, and a fund that has not filed, or withheld its positions under confidential treatment, has not sold.

Holder count: -40

Institutional value: -100.0%

Shares held: -97.6%

Top New Positions

vs Jun 30, 2026

Institution	Acquired	Value (USD)	Open
Small SYQUANT CAPITAL SAS	350,000	$0

Top Sold-Out Positions

vs Jun 30, 2026

Institution	Previously Held	Last Value (USD)	Open
Small DELTEC ASSET MANAGEMENT LLC	50,000	$505,000
Mid ABC ARBITRAGE SA	30,000	$303,000

Filter: New 1 Increased 0 Reduced 0 Sold out 2 Unchanged 0

Showing 1 of 1

All Common Calls Puts

Compact Export CSV

Holder

Value (USD)

% of 13F

SYQUANT CAPITAL SAS IDACU

—

350,000

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

Manager	Shares	Value (USD)	% of position	Discretion
ABC ARBITRAGE ASSET MANAGEMENT joint	30,000	$303,000	100.0%	Other

Key facts CIK 2090441 CUSIP G4949K104 13F (30d) 1 filings 1 filers Visit website