Vault-13

IRON HORSE ACQUISIT II CORP IRHO

COM · Common Stock · CUSIP 46283H103

55 institutional holders +13 vs Q1 2026
19,542,25519.5m shares reported held*
66.7% of all shares outstanding*
$196.0mreported value*
16 new 10 added 6 reduced 4 sold out net bought ≈ $43.6m (+4.3m shares)

* Summed across managers. Shares that two managers' reports both contain – a subsidiary's holdings that its parent's report includes too, or a sub-adviser's in its client's – are counted once. Holder counts are more reliable. Shares outstanding: 29.3m as of 2026-07-13, from the company's own SEC filing; the percentage can still exceed 100%: lent-out shares are counted by the lender and the buyer, and some reports overlap without saying so. Implied quarter-end price ≈ $10.03.

Trends to Q2 2026

Institutional holders

Managers reporting a position, each quarter

0204060Q1 26: 42Q2 26: 5555Q1 26Q2 26
Numbers
QuarterHolders
Q1 202642
Q2 202655

Biggest buyers

MMCAP International Inc. SPC New +1,500,000+1.5m
Wealthspring Capital LLC New +736,510+736.5k
GLAZER CAPITAL, LLC Added +640,582+640.6k
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND New +602,165+602.2k
TIG Advisors, LLC New +400,000+400.0k
HIGHBRIDGE CAPITAL MANAGEMENT LLC Added +388,230+388.2k
MILLENNIUM MANAGEMENT LLC New +300,000+300.0k
HGC Investment Management Inc. New +298,489+298.5k
JPMORGAN CHASE & CO New +218,809+218.8k
AQR Arbitrage LLC Added +192,667+192.7k

Biggest sellers

CSS LLC/IL Sold out -737,555-737.6k
Ilex Capital Partners (UK) LLP Sold out -400,000-400.0k
Sculptor Capital LP Sold out -249,938-249.9k
Meteora Capital, LLC Reduced -201,364-201.4k
Clear Street Group Inc. Reduced -105,654-105.7k
WOLVERINE ASSET MANAGEMENT LLC Reduced -88,532-88.5k
Shaolin Capital Management LLC Reduced -41,026-41.0k
ROYAL BANK OF CANADA Sold out -21,679-21.7k
Virtu Financial LLC Reduced -9,238-9.2k
RIVERNORTH CAPITAL MANAGEMENT, LLC Reduced -100-100

Major shareholders (over 5%)

Anyone who owns more than 5% of a class of the company's shares has to say so: on Schedule 13D if they may try to influence or control the company, on 13G if they're a passive investor, and update it as the stake changes. Each holder's latest filing, from 19 Dec 2024 on; percentages are of the share class, as the holder worked them out.

HolderStakeChangeShares Last filed
IRHO SPAC Sponsor LLC 13D · may seek influence new · filed 2026-01-16
Stated purposeFounder Shares In connection with the organization of the Issuer, in September 2025, the Sponsor paid $32,000 to cover certain of the Issuer's initial public offering costs in exchange for 5,750,000 ordinary shares, (the "Founder Shares"), for approximately $0.004 per share. On December 18, 2025, the underwriter to the public offering exercised its over-allotment option ( "OA Option") in connection with the Issuer's initial public offering ("IPO") which was declared effective on December 16, 2025. See Issuer's registration statement on Form S-1 (File No. 333-284331, the "Registration Statement"), under the heading "Certain Transactions." Public Units On December 18, 2025, the Company closed its initial public offering of 23,000,000 units, at a price of $10.00 per unit (the "Public Units… Full filing
 21.0% new 6.1m≈ $61.4m 2026-01-16

Insider purchases and sales since 1 Apr 2026

Shares bought or sold by the company's own officers, directors and 10% owners, in the open market or privately, as they reported to the SEC on Form 4 (due within two business days of the trade). Grants, option exercises, shares withheld for tax and gifts aren't included.

None reported since 1 Apr 2026.

Holders, Q2 2026

#ManagerLocationShares Value% of their portfolioChangeShares change
1 Linden Advisors LP 0.08% of their portfolio New York, NY 1,500,0001.5m $15.0m $15.0m 0.08% Unchanged
2 MMCAP International Inc. SPC 1.28% of their portfolio GRAND CAYMAN, E9 1,500,0001.5m $15.0m $15.0m 1.28% New
3 Magnetar Financial LLC 0.14% of their portfolio EVANSTON, IL 1,500,0001.5m $15.0m $15.0m 0.14% Unchanged
4 AQR Arbitrage LLC 0.16% of their portfolio Greenwich, CT 1,119,8681.1m $11.2m $11.2m 0.16% Added +192.7k +192,667
5 GLAZER CAPITAL, LLC 0.22% of their portfolio New York, NY 908,336908.3k $9.1m $9.1m 0.22% Added +640.6k +640,582
6 PICTON MAHONEY ASSET MANAGEMENT 0.08% of their portfolio Toronto, A6 900,000900.0k $9.0m $9.0m 0.08% Unchanged
7 Polar Asset Management Partners Inc. 0.15% of their portfolio TORONTO, A6 800,000800.0k $8.0m $8.0m 0.15% Unchanged
8 Wealthspring Capital LLC 1.65% of their portfolio WEST HARRISON, NY 736,510736.5k $7.4m $7.4m 1.65% New
9 BNP PARIBAS FINANCIAL MARKETS 0.00% of their portfolio PARIS, I0 649,135649.1k $6.5m $6.5m 0.00% Added +68.6k +68,624
10 Radcliffe Capital Management, L.P. 0.46% of their portfolio BALA CYNWYD, PA 607,182607.2k $6.1m $6.1m 0.46% Unchanged
11 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND 0.01% of their portfolio TORONTO, A6 602,165602.2k $6.0m $6.0m 0.01% New
12 First Trust Capital Management L.P. 0.35% of their portfolio CHICAGO, IL 600,000600.0k $6.0m $6.0m 0.35% Unchanged
13 TENOR CAPITAL MANAGEMENT Co., L.P. 0.08% of their portfolio NEW YORK, NY 547,508547.5k $5.5m $5.5m 0.08% Unchanged
14 HIGHBRIDGE CAPITAL MANAGEMENT LLC 0.17% of their portfolio NEW YORK, NY 503,684503.7k $5.1m $5.1m 0.17% Added +388.2k +388,230
15 HEIGHTS CAPITAL MANAGEMENT, INC 1.09% of their portfolio SAN FRANCISCO, CA 470,000470.0k $4.7m $4.7m 1.09% Unchanged
16 MANGROVE PARTNERS IM, LLC 0.30% of their portfolio Greenwich, CT 450,000450.0k $4.5m $4.5m 0.30% Unchanged
17 Context Capital Management, LLC 0.08% of their portfolio LAJOLLA, CA 400,000400.0k $4.0m $4.0m 0.08% Unchanged
18 TIG Advisors, LLC 0.18% of their portfolio New York, NY 400,000400.0k $4.0m $4.0m 0.18% New
19 Hudson Bay Capital Management LP 0.02% of their portfolio STAMFORD, CT 379,148379.1k $3.8m $3.8m 0.02% Unchanged
20 Kryger Capital LLC 0.22% of their portfolio HAMILTON, D0 378,052378.1k $3.8m $3.8m 0.22% Added +98.3k +98,260
21 TWO SIGMA INVESTMENTS, LP 0.00% of their portfolio NEW YORK, NY 362,500362.5k $3.6m $3.6m 0.00% Unchanged
22 WHITEBOX ADVISORS LLC 0.06% of their portfolio MINNEAPOLIS, MN 350,000350.0k $3.5m $3.5m 0.06% Unchanged
23 COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS 0.01% of their portfolio HARRISBURG, PA 300,000300.0k $3.0m $3.0m 0.01% Added +100.0k +100,000
24 MILLENNIUM MANAGEMENT LLC 0.00% of their portfolio NEW YORK, NY 300,000300.0k $3.0m $3.0m 0.00% New
25 HGC Investment Management Inc. 0.59% of their portfolio TORONTO, A6 298,489298.5k $3.0m $3.0m 0.59% New
26 Alberta Investment Management Corp 0.01% of their portfolio EDMONTON, A0 250,000250.0k $2.5m $2.5m 0.01% Unchanged
27 Mint Tower Capital Management B.V. 0.30% of their portfolio AMSTERDAM, P7 250,000250.0k $2.5m $2.5m 0.30% Unchanged
28 BERKLEY W R CORP 0.12% of their portfolio Greenwich, CT 247,850247.8k $2.5m $2.5m 0.12% Unchanged
29 SONA ASSET MANAGEMENT (US) LLC 0.09% of their portfolio NEW YORK, NY 244,139244.1k $2.4m $2.4m 0.09% Unchanged
30 JPMORGAN CHASE & CO 0.00% of their portfolio NEW YORK, NY 218,809218.8k $2.2m $2.2m 0.00% New
31 Meteora Capital, LLC 0.18% of their portfolio Boca Raton, FL 217,449217.4k $2.2m $2.2m 0.18% Reduced -201.4k -201,364
32 Shaolin Capital Management LLC 0.12% of their portfolio Miami, FL 209,075209.1k $2.1m $2.1m 0.12% Reduced -41.0k -41,026
33 Periscope Capital Inc. 0.24% of their portfolio Toronto, A6 150,000150.0k $1.5m $1.5m 0.24% Added +62.0k +62,000
34 Yakira Capital Management, Inc. 0.43% of their portfolio Westport, CT 146,907146.9k $1.5m $1.5m 0.43% New
35 TORONTO DOMINION BANK 0.00% of their portfolio TORONTO, ONTARIO, A6 131,057131.1k $1.3m $1.3m 0.00% New
36 WOLVERINE ASSET MANAGEMENT LLC 0.01% of their portfolio CHICAGO, IL 113,268113.3k $1.1m $1.1m 0.01% Reduced -88.5k -88,532
37 MOORE CAPITAL MANAGEMENT, LP 0.02% of their portfolio NEW YORK, NY 100,000100.0k $1.0m $1.0m 0.02% Unchanged
38 L1 Global Manager Pty Ltd 0.81% of their portfolio Melbourne, C3 100,000100.0k $1.0m $1.0m 0.81% Unchanged
39 O'Connor Alternative Investments LLC 0.07% of their portfolio NEW YORK, NY 100,000100.0k $1.0m $1.0m 0.07% Not comparable
40 Karpus Management, Inc. 0.02% of their portfolio Pittsford, NY 78,67578.7k $789.1k $789.1k 0.02% Added +33.7k +33,675
41 SummitTX Capital, L.P. 0.02% of their portfolio FORT WORTH, TX 57,06157.1k $572.3k $572.3k 0.02% New
42 PRELUDE CAPITAL MANAGEMENT, LLC 0.04% of their portfolio NEW YORK, NY 55,00055.0k $551.6k $551.6k 0.04% New
43 Stoic Point Capital Management LLC 0.46% of their portfolio PALO ALTO, CA 55,00055.0k $551.6k $551.6k 0.46% New
44 RIVERNORTH CAPITAL MANAGEMENT, LLC 0.02% of their portfolio WEST PALM BEACH, FL 49,90049.9k $499.5k $499.5k 0.02% Reduced -100 -100
45 Kepos Capital LP 0.55% of their portfolio NEW YORK, NY 40,00040.0k $401.0k $401.0k 0.55% New
46 PenderFund Capital Management Ltd. 0.03% of their portfolio VANCOUVER, A1 25,80025.8k $258.8k $258.8k 0.03% Added +20.8k +20,800
47 DELTEC ASSET MANAGEMENT LLC 0.04% of their portfolio New York, NY 25,00025.0k $250.8k $250.8k 0.04% Unchanged
48 FNY Investment Advisers, LLC 0.09% of their portfolio NEW YORK, NY 25,00025.0k $250.0k $250.0k 0.09% New
49 MIZUHO SECURITIES USA LLC 0.00% of their portfolio NEW YORK, NY 20,97421.0k $207.0k $207.0k 0.00% Unchanged
50 Ionic Capital Management LLC 0.18% of their portfolio NEW YORK, NY 18,87518.9k $189.3k $189.3k 0.18% New
51 Virtu Financial LLC 0.00% of their portfolio New York, NY 15,34415.3k $154.0k $154.0k 0.00% Reduced -9.2k -9,238
52 UBS Group AG 0.00% of their portfolio ZURICH, V8 14,75314.8k $148.0k $148.0k 0.00% Added +13.5k +13,548
53 SUSQUEHANNA INTERNATIONAL GROUP, LLP 0.00% of their portfolio BALA CYNWYD, PA 11,00011.0k $110.3k $110.3k 0.00% Unchanged
54 Clear Street Group Inc. 0.00% of their portfolio NEW YORK, NY 8,7408.7k $87.7k $87.7k 0.00% Reduced -105.7k -105,654
55 MORGAN STANLEY 0.00% of their portfolio NEW YORK, NY 22 $20 $20 0.00% New