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
Held by 13F filers
2,640,538
selection includes debt or preferreds — no % of shares outstanding
Holders
10
-12 vs 2026-03-31 · 1 new, 13 exited
Value
$27.0M
shares -62.6% vs prior quarter

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

ClassListedShares outstandingHeld by 13F filers% of classHoldersCUSIP
Common stockIRHO · NASDAQ29,320,00019,542,25566.7%5546283H103

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
CountCUSIPClass (as filers write it)HoldersShares heldClass shares% of classValueOptionsMapped via
46283H103COM5519,542,25529,320,00066.7%$196.0M—13DGholders →
46283H202UNIT 07/11/2030not common102,640,538——$27.0M—13DGholders →
46283H129RIGHT 07/11/2030not common5018,124,596——$3.0M—NPORTholders →

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 (10 of 10 · 46283H202)

change vs 2026-03-31
#FilerShares / principal% of classValueChange
1LMR Partners LLP1,500,000—$15.3M—
2OMERS ADMINISTRATION Corp400,000—$4.1M—
3BlueCrest Capital Management Ltd175,000—$1.8M—
4Clear Street Group Inc.172,243—$1.8M+126,952 (+280.3%)
5Westchester Capital Management, LLC150,000—$1.5M—
6SYQUANT CAPITAL SAS125,000—$1.3M—
7HRT FINANCIAL LP101,221—$1.0M-9,637 (-8.7%)
8Lineage Point Capital LP16,600—$172K—
9FNY Investment Advisers, LLC330—$3K+130 (+65.0%)
10GLAZER CAPITAL, LLC144—$1KNEW
Exited since 2026-03-31 (13 filers; largest 13 shown)
MMCAP International Inc. SPC−1,500,000
Wealthspring Capital LLC−737,680
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND−602,165
HGC Investment Management Inc.−523,489
TIG Advisors, LLC−400,000
MILLENNIUM MANAGEMENT LLC−300,161
Yakira Capital Management, Inc.−146,907
O'Connor Alternative Investments LLC−100,000
PRELUDE CAPITAL MANAGEMENT, LLC−55,000
Stoic Point Capital Management LLC−55,000
TORONTO DOMINION BANK−50,000
Kepos Capital LP−40,000
Tuttle Capital Management, LLC−25,000

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 personFormFiledEventShares% of class
MM Asset Management Inc.SCHEDULE 13G/A2026-05-112026-03-311,500,0005.1%
MMCAP International Inc. SPCSCHEDULE 13G/A2026-05-112026-03-311,500,0005.1%
LMR Partners LLCSCHEDULE 13G2026-02-172025-12-311,500,0005.1%
LMR Partners LLPSCHEDULE 13G2026-02-172025-12-311,500,0005.1%
SUPERNOVA MANAGEMENT LLCSCHEDULE 13G2026-02-172025-12-311,500,0005.11%
Stefan RenoldSCHEDULE 13G2026-02-172025-12-311,500,0005.1%
DAVID J. SNYDERMANSCHEDULE 13G2026-02-172025-12-311,500,0005.11%
LMR Partners AGSCHEDULE 13G2026-02-172025-12-311,500,0005.1%
LMR PARTNERS (DIFC) LtdSCHEDULE 13G2026-02-172025-12-311,500,0005.1%
LMR Partners (Ireland) LimitedSCHEDULE 13G2026-02-172025-12-311,500,0005.1%
Ben LevineSCHEDULE 13G2026-02-172025-12-311,500,0005.1%
MAGNETAR FINANCIAL LLCSCHEDULE 13G2026-02-172025-12-311,500,0005.11%
LMR PARTNERS LtdSCHEDULE 13G2026-02-172025-12-311,500,0005.1%
MAGNETAR CAPITAL PARTNERS LPSCHEDULE 13G2026-02-172025-12-311,500,0005.11%
Jose BengocheaSCHEDULE 13D2026-01-162025-12-186,120,00021%
IRHO SPAC SPONSOR LLCSCHEDULE 13D2026-01-162025-12-186,120,00021%
William CaragolSCHEDULE 13D2026-01-162025-12-186,120,00021%
Linden GP LLCSCHEDULE 13G2025-12-232025-12-181,436,4066.1%
Siu Min WongSCHEDULE 13G2025-12-232025-12-181,500,0006.4%
Linden Capital L.P.SCHEDULE 13G2025-12-232025-12-181,436,4066.1%
Linden Advisors LPSCHEDULE 13G2025-12-232025-12-181,500,0006.4%

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.