IRHO
Iron Horse Acquisition II Corp.Company with tickers: IRHO, IRHOR, IRHOU
CIK
2051985
CUSIP
46283H103
Shares Outstanding
29,320,000
Investor Relations
https://ironhorseacquisition.com/investor-relations/
13F Activity (30d)
17 filings
17 filers
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.
Holders: 24
Total Value: $75,531,302
Total Shares: 7,660,376
Institutional Ownership Trend
2 quarters
Holder Concentration
Across 24 13F filersTop Holder
19.6%
of institutional value
Top 5
53.3%
of institutional value
Top 10
78.0%
of institutional value
HHI
869
Broadly held
Quarterly Activity
vs Dec 18, 2025
New
24
Increased
0
Decreased
0
Sold Out
1
Unchanged
0
Holder count:
+23
Institutional value:
—
Shares held:
+25.2%
Top New Positions
vs Dec 18, 2025| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mid Linden Advisors LP | 1,500,000 | $14,790,000 | |
| Mid AQR Arbitrage LLC | 927,201 | $9,142,201 | |
| Small Radcliffe Capital Management, L.P. | 607,182 | $5,986,814 | |
| Mega BNP PARIBAS ARBITRAGE, SA | 580,511 | $5,723,838 | |
| Small HEIGHTS CAPITAL MANAGEMENT, INC | 470,000 | $4,634,200 |
Top Sold-Out Positions
vs Dec 18, 2025| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| — IRHO SPAC SPONSOR LLC | 6,120,000 | $0 |
| Holder | Value (USD) | % of 13F | Shares | Type | Discretion | Filed | Open | |||
|---|---|---|---|---|---|---|---|---|---|---|
| Mid Linden Advisors LP | $14,790,000 | 19.58% | 1,500,000 | Shares | Sole | 2026-05-15 | ||||
| Mid AQR Arbitrage LLC | $9,142,201 | 12.10% | 927,201 | Shares | Defined | 2026-05-15 | ||||
| Small Radcliffe Capital Management, L.P. | $5,986,814 | 7.93% | 607,182 | Shares | Sole | 2026-05-15 | ||||
| Mega BNP PARIBAS ARBITRAGE, SA | $5,723,838 | 7.58% | 580,511 | Shares | Defined | 2026-05-12 | ||||
| Small HEIGHTS CAPITAL MANAGEMENT, INC | $4,634,200 | 6.14% | 470,000 | Shares | Other | 2026-05-15 | ||||
| Mid MANGROVE PARTNERS IM, LLC | $4,437,000 | 5.87% | 450,000 | Shares | Sole | 2026-05-15 | ||||
| Mid Ilex Capital Partners (UK) LLP | $3,944,000 | 5.22% | 400,000 | Shares | Sole | 2026-05-15 | ||||
| Small Context Capital Management, LLC | $3,944,000 | 5.22% | 400,000 | Shares | Sole | 2026-05-07 | ||||
| Mega TWO SIGMA INVESTMENTS, LP | $3,574,250 | 4.73% | 362,500 | Shares | Sole | 2026-05-15 | ||||
| Mid Kryger Capital LLC | $2,758,749 | 3.65% | 279,792 | Shares | Defined | 2026-05-14 | ||||
| Small Shaolin Capital Management LLC | $2,465,995 | 3.26% | 250,101 | Shares | Sole | 2026-05-15 | ||||
| Mid Alberta Investment Management Corp | $2,465,000 | 3.26% | 250,000 | Shares | Sole | 2026-04-29 | ||||
| Small Mint Tower Capital Management B.V. | $2,465,000 | 3.26% | 250,000 | Shares | Sole | 2026-05-04 | ||||
| Mid SONA ASSET MANAGEMENT (US) LLC | $2,407,210 | 3.19% | 244,139 | Shares | Other | 2026-05-15 | ||||
| Large COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | $1,972,000 | 2.61% | 200,000 | Shares | Sole | 2026-05-01 | ||||
| Large Clear Street Group Inc. | $1,127,924 | 1.49% | 114,394 | Shares | Sole | 2026-05-15 | ||||
| Mid MOORE CAPITAL MANAGEMENT, LP | $986,000 | 1.31% | 100,000 | Shares | Sole | 2026-05-15 | ||||
| Micro L1 Global Manager Pty Ltd | $986,000 | 1.31% | 100,000 | Shares | Sole | 2026-05-15 | ||||
| Small Periscope Capital Inc. | $867,680 | 1.15% | 88,000 | Shares | Sole | 2026-05-14 | ||||
| Small DELTEC ASSET MANAGEMENT LLC | $246,500 | 0.33% | 25,000 | Shares | Sole | 2026-04-24 | ||||
| Mid Virtu Financial LLC | $242,378 | 0.32% | 24,582 | Shares | Defined | 2026-05-14 | ||||
| Mid MIZUHO SECURITIES USA LLC Broker-Dealer | $206,803 | 0.27% | 20,974 | Shares | Defined | 2026-05-11 | ||||
| Mega SUSQUEHANNA INTERNATIONAL GROUP, LLP | $108,460 | 0.14% | 11,000 | Shares | Other | 2026-05-15 | ||||
| Small PenderFund Capital Management Ltd. | $49,300 | 0.07% | 5,000 | Shares | Sole | 2026-05-15 | ||||
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