IRAB · Iris Acquisition Corp II · Holdings
Substantial doubt about the company's ability to continue as a going concern.
“Management has determined that the Company currently lacks the liquidity it needs to sustain operations for a reasonable period of time, which is considered to be at least one year from the date that the accompanying unaudited condensed financial statements are issued as it expects to continue to incur significant costs in pursuit of its acquisition plans. In addition, Management has determined that if the Company is unable to complete an initial Business Combination within the Completion Window, then the Company will cease all operations except for the purpose of liquidating. These conditions raise substantial doubt about the Company's ability to continue as a going concern. Management plans to consummate an initial Business Combination prior to the end of the combination period. No adjustments have been made to the carrying amounts of assets or liabilities should the Company be required to liquidate after February 4, 2028 (24 months from the closing of the Initial Public Offering), the end of the Completion Window. There can be no assurance that the Company's plans to raise capital or to consummate an initial Business Combination will be successful.”View the 10-Q filed Aug 10, 2026
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.
Institutional Ownership Trend
Holder Concentration
Across 43 13F filers · Δ vs Mar 31, 2026Who Holds IRAB
Last 2 quarters through Jun 30, 2026Each 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: 43 filers, like-for-like change +38.2%; actively managed books +37.7%.
| Holder type | Share | Filers | Change |
|---|---|---|---|
| Registered adviser | 67.3% | 25 | +29.3% |
| Exempt adviser | 1.6% | 1 | 0.0% |
| Adviser | 3.8% | 2 | +159.1% |
| Bank | 0.0% | 0 | -100.0% |
| Insurer | 1.3% | 1 | 0.0% |
| Non-US | 14.5% | 5 | +36.0% |
| Unknown | 11.4% | 9 | +121.1% |
| Style | Share | Filers | Change |
|---|---|---|---|
| Index-like | 0.3% | 1 | new |
| Systematic-like | 8.5% | 5 | +50.4% |
| Concentrated | 8.5% | 5 | +946.4% |
| Diversified active | 82.7% | 32 | +25.5% |
| Turnover | Share | Filers | Change |
|---|---|---|---|
| Low turnover | 1.9% | 2 | +212.3% |
| Medium turnover | 65.9% | 20 | +35.2% |
| High turnover | 30.6% | 19 | +45.9% |
| Unknown | 1.7% | 2 | -20.5% |
| Holding horizon | Share | Filers | Change |
|---|---|---|---|
| Short horizon | 42.5% | 19 | +8.5% |
| Medium horizon | 17.8% | 5 | +961.2% |
| Long horizon | 26.5% | 7 | +16.6% |
| Unknown | 13.2% | 12 | +50.8% |
| 13F book size | Share | Filers | Change |
|---|---|---|---|
| Under $1B | 15.2% | 11 | +18.9% |
| $1B to $10B | 51.7% | 19 | +53.6% |
| $10B to $100B | 22.0% | 9 | +25.0% |
| $100B or more | 11.1% | 4 | +33.2% |
| Client base | Share | Filers | Change |
|---|---|---|---|
| Pooled investment vehicles | 63.3% | 23 | +31.8% |
| Registered funds and BDCs | 4.0% | 2 | 0.0% |
| Unknown | 32.7% | 18 | +60.9% |
| Private funds | Share | Filers | Change |
|---|---|---|---|
| Hedge funds | 60.6% | 24 | +33.7% |
| Private equity funds | 2.7% | 1 | 0.0% |
| Other private funds | 5.7% | 1 | 0.0% |
| Unknown | 31.0% | 17 | +66.1% |
| Location | Share | Filers | Change |
|---|---|---|---|
| United States | 81.9% | 35 | +32.0% |
| Outside the US | 18.1% | 8 | +75.1% |
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
43 13F filers, quarter ended Jun 30, 2026Measured 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.
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 basisEstimated, 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 cost covers 28.5% 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 IRAB's active holders also own, quarter ended Jun 30, 2026| # | Company | Shared holders |
|---|---|---|
| 1 | BIII Black Spade Acquisition III Co | 15 |
| 2 | BEBE TGE Value Creative Solutions Corp | 14 |
| 3 | DNMX Dynamix Corp III | 18 |
| 4 | MZYX MOZAYYX Acquisition Corp. | 16 |
| 5 | TVIV Texas Ventures Acquisition IV Corp | 14 |
| 6 | IGAC Invest Green Acquisition Corp | 15 |
| 7 | IDAC Iron Dome Acquisition I Corp. | 12 |
| 8 | SOUL Soulpower Acquisition Corp. | 17 |
| 9 | YICC Yorkville International Capital Corp. | 15 |
| 10 | ETSS Energy Transition Special Opportunities | 10 |
Shareholder Targets
13F filers that own its peers but not IRAB, quarter ended Jun 30, 2026Found through its holder-overlap peers: BIII, BEBE, DNMX, MZYX, TVIV, IGAC, IDAC, SOUL, YICC, ETSS, WPAC, BIXI, LEGO, BWIV, JACS, CAES, GSRF, BBCQ, OTGA, YCY. 110 filers in all.
| # | Filer | In peers | Largest peers |
|---|---|---|---|
| 1 | LMR Partners LLP Exempt adviser, Diversified active | $96,162,673 11 held | BBCQ, GSRF, BIXI |
| 2 | Westchester Capital Management, LLC Registered adviser, Diversified active | $59,299,341 11 held | SOUL, JACS, GSRF |
| 3 | METEORA CAPITAL, LLC Adviser, Diversified active | $58,543,306 11 held | DNMX, GSRF, CAES |
| 4 | Wealthspring Capital LLC Registered adviser, Diversified active | $48,359,993 11 held | TVIV, BWIV, BIII |
| 5 | HIGHBRIDGE CAPITAL MANAGEMENT LLC Registered adviser, Diversified active | $41,245,325 7 held | BBCQ, JACS, CAES |
| 6 | TORONTO DOMINION BANK Bank, Diversified active | $37,435,232 12 held | CAES, YICC, DNMX |
| 7 | Fort Baker Capital Management LP Registered adviser, Concentrated | $29,411,222 3 held | BBCQ, BIII, OTGA |
| 8 | Karpus Management, Inc. Adviser, Diversified active | $28,879,512 5 held | WPAC, SOUL, DNMX |
| 9 | Governors Lane LP Registered adviser, Diversified active | $25,157,659 8 held | BBCQ, GSRF, YICC |
| 10 | RLH Capital LLC Unknown, Diversified active | $20,795,617 4 held | GSRF, SOUL, BIXI |
Fund Ownership of IRAB by Fund Type
Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026Index funds and index ETFs hold 0.00% of shares outstanding.
| Fund type | Of shares outstanding | Shares |
|---|---|---|
| Index funds | 0.00% | 0 |
| Index ETFs | 0.00% | 0 |
| Active ETFs | 0.00% | 0 |
| Active funds | 1.75% | 399,998 |
| Unclassified | 0.00% | 0 |
| All registered funds | 1.75% | 399,998 |
How fund types are measured
Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.
Quarterly Activity
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.
Top Buyers
vs Mar 31, 2026| Institution | Added | Now Holds | Open |
|---|---|---|---|
| Large COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | +150,000 | 229,662 | |
| Mid AQR Arbitrage LLC | +6,500 | 584,964 | |
| Mid GLAZER CAPITAL, LLC | +4,011 | 206,321 | |
| Mega D. E. Shaw & Co., Inc. | +1 | 420,601 |
Top Sellers
vs Mar 31, 2026| Institution | Sold | Now Holds | Open |
|---|---|---|---|
| Mid Shaolin Capital Management LLC | −199,221 | 200,779 | |
| Large Clear Street Group Inc. | −64,600 | 30,756 | |
| Mid Virtu Financial LLC | −11,200 | 14,870 |
Top New Positions
vs Mar 31, 2026| Institution | Acquired | Value (USD) | Open |
|---|---|---|---|
| Mid ARISTEIA CAPITAL, L.L.C. | 1,159,828 | $11,517,092 | |
| Mid MMCAP International Inc. SPC | 600,000 | $5,958,000 | |
| Mid Magnetar Financial LLC | 600,000 | $5,958,000 | |
| Mega MILLENNIUM MANAGEMENT LLC | 425,000 | $4,220,250 | |
| Large Alberta Investment Management Corp | 400,000 | $3,972,000 |
Top Sold-Out Positions
vs Mar 31, 2026| Institution | Previously Held | Last Value (USD) | Open |
|---|---|---|---|
| Mega ROYAL BANK OF CANADA | 9,885 | $97,070 |
| Holder | Value (USD) | % of 13F | Shares | Type | Filed | Open |
|---|---|---|---|---|---|---|
| Large ADAGE CAPITAL PARTNERS GP, L.L.C. Registered adviser | $13,405,500 | 9.02% | 1,350,000 | Shares | 2026-08-14 | |
| Mid ARISTEIA CAPITAL, L.L.C. Registered adviser | $11,517,092 | 7.75% | 1,159,828 | Shares | 2026-08-14 | |
| Mid TENOR CAPITAL MANAGEMENT Co., L.P. Registered adviser | $9,930,000 | 6.68% | 1,000,000 | Shares | 2026-08-14 | |
| Mid SONA ASSET MANAGEMENT (US) LLC Registered adviser | $8,440,500 | 5.68% | 850,000 | Shares | 2026-08-14 | |
| Mid Linden Advisors LP Registered adviser | $7,944,000 | 5.35% | 800,000 | Shares | 2026-08-14 | |
| Large HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Non-US | $7,944,000 | 5.35% | 800,000 | Shares | 2026-08-13 | |
| Mid Magnetar Financial LLC Registered adviser | $5,958,000 | 4.01% | 600,000 | Shares | 2026-08-14 | |
| Mid MMCAP International Inc. SPC | $5,958,000 | 4.01% | 600,000 | Shares | 2026-08-14 | |
| Mid AQR Arbitrage LLC Registered adviser | $5,808,692 | 3.91% | 584,964 | Shares | 2026-08-14 | |
| Mega BNP PARIBAS ARBITRAGE, SA Non-US | $5,427,062 | 3.65% | 546,532 | Shares | 2026-08-13 | |
| Mega MILLENNIUM MANAGEMENT LLC Registered adviser | $4,220,250 | 2.84% | 425,000 | Shares | 2026-08-14 | |
| Mega D. E. Shaw & Co., Inc. | $4,176,567 | 2.81% | 420,601 | Shares | 2026-08-14 | |
| Large Alberta Investment Management Corp Non-US | $3,972,000 | 2.67% | 400,000 | Shares | 2026-08-06 | |
| Mid First Trust Capital Management L.P. Registered adviser | $3,971,980 | 2.67% | 399,998 | Shares | 2026-08-13 | |
| Mid WHITEBOX ADVISORS LLC Registered adviser | $3,725,736 | 2.51% | 375,200 | Shares | 2026-08-14 | |
| Small Crossingbridge Advisors, LLC Adviser | $3,475,500 | 2.34% | 350,000 | Shares | 2026-08-13 | |
| Small Radcliffe Capital Management, L.P. Registered adviser | $2,974,730 | 2.00% | 299,570 | Shares | 2026-08-14 | |
| Mega TWO SIGMA INVESTMENTS, LP Registered adviser | $2,699,718 | 1.82% | 271,875 | Shares | 2026-08-14 | |
| Large Centiva Capital, LP Registered adviser | $2,489,451 | 1.68% | 250,700 | Shares | 2026-08-13 | |
| Small HGC Investment Management Inc. Non-US | $2,482,500 | 1.67% | 250,000 | Shares | 2026-08-14 | |
| Small Context Capital Management, LLC Registered adviser | $2,482,500 | 1.67% | 250,000 | Shares | 2026-07-23 | |
| Mid Periscope Capital Inc. Exempt adviser | $2,393,130 | 1.61% | 241,000 | Shares | 2026-08-11 | |
| Large COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | $2,280,543 | 1.53% | 229,662 | Shares | 2026-07-17 | |
| Mid Cable Car Capital, LP Registered adviser | $2,234,250 | 1.50% | 225,000 | Shares | 2026-08-14 | |
| Small Lineage Point Capital LP Adviser | $2,184,600 | 1.47% | 220,000 | Shares | 2026-08-14 | |
| Mid GLAZER CAPITAL, LLC Registered adviser | $2,048,767 | 1.38% | 206,321 | Shares | 2026-08-17 | |
| Mid Shaolin Capital Management LLC Registered adviser | $1,993,735 | 1.34% | 200,779 | Shares | 2026-08-14 | |
| Large Verition Fund Management LLC Registered adviser | $1,986,000 | 1.34% | 200,000 | Shares | 2026-08-14 | |
| Mid RIVERNORTH CAPITAL MANAGEMENT, LLC Registered adviser | $1,986,000 | 1.34% | 200,000 | Shares | 2026-08-14 | |
| Mid BERKLEY W R CORP Insurer | $1,975,672 | 1.33% | 198,960 | Shares | 2026-08-14 | |
| Small HEIGHTS CAPITAL MANAGEMENT, INC | $1,837,050 | 1.24% | 185,000 | Shares | 2026-08-14 | |
| Large PICTON MAHONEY ASSET MANAGEMENT Non-US | $1,737,750 | 1.17% | 175,000 | Shares | 2026-08-13 | |
| Small Mint Tower Capital Management B.V. | $1,489,500 | 1.00% | 150,000 | Shares | 2026-08-18 | |
| Mid Polar Asset Management Partners Inc. Registered adviser | $993,000 | 0.67% | 100,000 | Shares | 2026-08-14 | |
| Micro Kepos Capital LP Registered adviser | $993,000 | 0.67% | 100,000 | Shares | 2026-08-13 | |
| Large Hudson Bay Capital Management LP Registered adviser | $982,454 | 0.66% | 98,938 | Shares | 2026-08-14 | |
| Mid WOLVERINE ASSET MANAGEMENT LLC Registered adviser | $645,916 | 0.43% | 65,047 | Shares | 2026-08-10 | |
| Mid MIZUHO SECURITIES USA LLC | $496,500 | 0.33% | 50,000 | Shares | 2026-07-28 | |
| Mid MOORE CAPITAL MANAGEMENT, LP Registered adviser | $496,500 | 0.33% | 50,000 | Shares | 2026-08-14 | |
| Large Clear Street Group Inc. | $305,407 | 0.21% | 30,756 | Shares | 2026-08-12 | |
| Mid CSS LLC/IL | $248,250 | 0.17% | 25,000 | Shares | 2026-08-14 | |
| Large Schonfeld Strategic Advisors LLC Registered adviser | $148,950 | 0.10% | 15,000 | Shares | 2026-08-14 | |
| Mid Virtu Financial LLC | $147,659 | 0.10% | 14,870 | Shares | 2026-08-13 |