Institutional HoldersBeta

Who holds a company, from every 13F filed for the quarter, one row per filer exactly as filed, against the latest share count the company reported.

Iron Horse Acquisition II Corp.

CIK 0002051985IRHOIRHORIRHOU· quarter ending 2026-06-30

Shares outstanding

29,320,000

as of 2026-07-13 · 10-Q cover page, filed 2026-07-13

Held by 13F filers

18,124,596

selection includes debt or preferreds — no % of shares outstanding

Holders

+11 vs 2026-03-31 · 18 new, 7 exited

Value

$3.0M

shares +29.7% vs prior quarter

Share classes (cover page of the 10-Q filed 2026-07-13, as of 2026-07-13)

Class	Listed	Shares outstanding	Held by 13F filers	% of class	Holders	CUSIP
Common stock	IRHO · NASDAQ	29,320,000	19,542,255	66.7%	55	46283H103

Each class is compared with its own share count; classes are not added together. A class that is not exchange-listed cannot be held by 13F filers.

Securities (CUSIPs held in 13F this quarter)

tick to combine

CUSIP	Class (as filers write it)	Holders	Shares held	Class shares	% of class	Value	Options	Mapped via
46283H103	COM	55	19,542,255	29,320,000	66.7%	$196.0M	—	13DG	holders →
46283H202	UNIT 07/11/2030not common	10	2,640,538	—	—	$27.0M	—	13DG	holders →
46283H129	RIGHT 07/11/2030not common	50	18,124,596	—	—	$3.0M	—	NPORT	holders →

Totals combine the ticked CUSIPs and update as you tick: common-stock classes by default; preferreds, notes, warrants and depositary shares are listed but not counted. "holders →" shows a single CUSIP on its own. Bonds are held as a principal amount, not shares. Options positions are never counted as holdings.

Top holders (50 of 50 · 46283H129)

change vs 2026-03-31

#	Filer	Shares / principal	% of class	Value	Change
1	MMCAP International Inc. SPC	1,500,000	—	$241K	NEW
2	Magnetar Financial LLC	1,500,000	—	$241K	—
3	Linden Advisors LP	1,500,000	—	$241K	—
4	AQR Arbitrage LLC	992,610	—	$160K	+11,290 (+1.2%)
5	PICTON MAHONEY ASSET MANAGEMENT	900,000	—	$145K	—
6	Polar Asset Management Partners Inc.	800,000	—	$129K	—
7	Wealthspring Capital LLC	737,680	—	$119K	NEW
8	Meteora Capital, LLC	696,490	—	$112K	+249,992 (+56.0%)
9	Radcliffe Capital Management, L.P.	604,519	—	$97K	—
10	HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND	602,165	—	$97K	NEW
11	TENOR CAPITAL MANAGEMENT Co., L.P.	547,508	—	$88K	—
12	BNP PARIBAS FINANCIAL MARKETS	526,392	—	$84K	—
13	HGC Investment Management Inc.	523,489	—	$84K	NEW
14	GLAZER CAPITAL, LLC	500,000	—	$80K	+232,246 (+86.7%)
15	TIG Advisors, LLC	400,000	—	$64K	NEW
16	Context Capital Management, LLC	400,000	—	$64K	—
17	Harraden Circle Investments, LLC	389,400	—	$63K	NEW
18	Hudson Bay Capital Management LP	379,148	—	$61K	—
19	WHITEBOX ADVISORS LLC	350,000	—	$56K	—
20	Kryger Capital LLC	344,005	—	$55K	+87,605 (+34.2%)
21	HEIGHTS CAPITAL MANAGEMENT, INC	317,338	—	$51K	-152,662 (-32.5%)
22	MANGROVE PARTNERS IM, LLC	300,987	—	$48K	-149,013 (-33.1%)
23	MILLENNIUM MANAGEMENT LLC	300,000	—	$48K	NEW
24	Shaolin Capital Management LLC	254,466	—	$41K	+4,365 (+1.7%)
25	Alberta Investment Management Corp	250,000	—	$40K	NEW
26	Mint Tower Capital Management B.V.	250,000	—	$40K	—
27	SONA ASSET MANAGEMENT (US) LLC	244,139	—	$39K	—
28	Sculptor Capital LP	243,088	—	$39K	—
29	ARISTEIA CAPITAL, L.L.C.	200,200	—	$32K	NEW
30	COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS	200,000	—	$32K	—
31	TORONTO DOMINION BANK	189,989	—	$31K	-99,403 (-34.3%)
32	BOOTHBAY FUND MANAGEMENT, LLC	172,498	—	$28K	NEW
33	Yakira Capital Management, Inc.	146,907	—	$24K	NEW
34	Ionic Capital Management LLC	125,327	—	$20K	NEW
35	O'Connor Alternative Investments LLC	100,000	—	$16K	NEW
36	MOORE CAPITAL MANAGEMENT, LP	100,000	—	$16K	—
37	Periscope Capital Inc.	88,000	—	$14K	—
38	CSS LLC/IL	73,810	—	$119K	—
39	SummitTX Capital, L.P.	57,061	—	$9K	NEW
40	PRELUDE CAPITAL MANAGEMENT, LLC	55,000	—	$9K	NEW
41	Stoic Point Capital Management LLC	55,000	—	$9K	NEW
42	RIVERNORTH CAPITAL MANAGEMENT, LLC	50,000	—	$9K	—
43	Clear Street Group Inc.	39,000	—	$6K	-73,800 (-65.4%)
44	ExodusPoint Capital Management, LP	36,628	—	$6K	—
45	Kepos Capital LP	24,100	—	$4K	NEW
46	Schonfeld Strategic Advisors LLC	22,399	—	$4K	NEW
47	WOLVERINE ASSET MANAGEMENT LLC	18,330	—	$3K	-181,570 (-90.8%)
48	FLOW TRADERS U.S. LLC	16,403	—	$3K	+1,904 (+13.1%)
49	ROYAL BANK OF CANADA	500	—	$0	-226 (-31.1%)
50	UBS Group AG	20	—	$3	-63 (-75.9%)

Exited since 2026-03-31 (7 filers; largest 7 shown)

First Trust Capital Management L.P.	−586,507
Ilex Capital Partners (UK) LLP	−400,000
BERKLEY W R CORP	−247,850
Virtu Financial LLC	−87,681
L1 Global Manager Pty Ltd	−64,200
Parallax Volatility Advisers, L.P.	−53,816
PenderFund Capital Management Ltd.	−5,000

Large holders from 13D/13G (latest per reporting person, last 2 years)

Filed when a holder crosses 5% or changes materially, so often more current than the quarter-end 13F. Percentages are the filer's own, against the share count they used.

Reporting person	Form	Filed	Event	Shares	% of class
MM Asset Management Inc.	SCHEDULE 13G/A	2026-05-11	2026-03-31	1,500,000	5.1%
MMCAP International Inc. SPC	SCHEDULE 13G/A	2026-05-11	2026-03-31	1,500,000	5.1%
LMR Partners LLC	SCHEDULE 13G	2026-02-17	2025-12-31	1,500,000	5.1%
LMR Partners LLP	SCHEDULE 13G	2026-02-17	2025-12-31	1,500,000	5.1%
SUPERNOVA MANAGEMENT LLC	SCHEDULE 13G	2026-02-17	2025-12-31	1,500,000	5.11%
Stefan Renold	SCHEDULE 13G	2026-02-17	2025-12-31	1,500,000	5.1%
DAVID J. SNYDERMAN	SCHEDULE 13G	2026-02-17	2025-12-31	1,500,000	5.11%
LMR Partners AG	SCHEDULE 13G	2026-02-17	2025-12-31	1,500,000	5.1%
LMR PARTNERS (DIFC) Ltd	SCHEDULE 13G	2026-02-17	2025-12-31	1,500,000	5.1%
LMR Partners (Ireland) Limited	SCHEDULE 13G	2026-02-17	2025-12-31	1,500,000	5.1%
Ben Levine	SCHEDULE 13G	2026-02-17	2025-12-31	1,500,000	5.1%
MAGNETAR FINANCIAL LLC	SCHEDULE 13G	2026-02-17	2025-12-31	1,500,000	5.11%
LMR PARTNERS Ltd	SCHEDULE 13G	2026-02-17	2025-12-31	1,500,000	5.1%
MAGNETAR CAPITAL PARTNERS LP	SCHEDULE 13G	2026-02-17	2025-12-31	1,500,000	5.11%
Jose Bengochea	SCHEDULE 13D	2026-01-16	2025-12-18	6,120,000	21%
IRHO SPAC SPONSOR LLC	SCHEDULE 13D	2026-01-16	2025-12-18	6,120,000	21%
William Caragol	SCHEDULE 13D	2026-01-16	2025-12-18	6,120,000	21%
Linden GP LLC	SCHEDULE 13G	2025-12-23	2025-12-18	1,436,406	6.1%
Siu Min Wong	SCHEDULE 13G	2025-12-23	2025-12-18	1,500,000	6.4%
Linden Capital L.P.	SCHEDULE 13G	2025-12-23	2025-12-18	1,436,406	6.1%
Linden Advisors LP	SCHEDULE 13G	2025-12-23	2025-12-18	1,500,000	6.4%

Source: SEC Form 13F-HR information tables for the quarter ending 2026-06-30 (filed within 45 days of quarter end; amendments applied; values normalised to dollars), the share count from the company's latest 10-K/10-Q XBRL cover page, and Schedule 13D/13G filings. Each row is a legal 13F filer as filed — related entities (e.g. Vanguard's advisers) are not merged. Retail brokerage accounts are not reported on 13F, so the remainder is mostly retail and insiders.