# IRIS ACQUISITION CORP II (IRAB)

> Institutional ownership reported to the SEC as of Q2 2026, from Form 13F filings. Source: https://holderbook.com/stocks/IRAB/

- Reporting holders: 43
- Reported value: $150.6M
- Held through calls: 0.0%
- Held through puts: 0.0%

A 13F reports long US equity positions only. Shorts, bonds, foreign listings and cash are not visible here, and positions are disclosed up to 45 days after the quarter ends.

## Largest holders

| Manager | Value | Shares | Share of their book | Quarters held |
|---|---|---|---|---|
| [ADAGE CAPITAL PARTNERS GP, L.L.C.](https://holderbook.com/funds/1165408-adage-capital-partners-gp-l-l-c/) | $13.4M | 1,350,000 | 0.0% | 2 |
| [ARISTEIA CAPITAL, L.L.C.](https://holderbook.com/funds/1080171-aristeia-capital-l-l-c/) | $11.5M | 1,159,828 | 0.1% | 1 |
| [TENOR CAPITAL MANAGEMENT Co., L.P.](https://holderbook.com/funds/1346554-tenor-capital-management-co-l-p/) | $9.9M | 1,000,000 | 0.1% | 2 |
| [SONA ASSET MANAGEMENT (US) LLC](https://holderbook.com/funds/1856405-sona-asset-management-us-llc/) | $8.4M | 850,000 | 0.2% | 2 |
| [Linden Advisors LP](https://holderbook.com/funds/1279396-linden-advisors-lp/) | $7.9M | 800,000 | 0.0% | 2 |
| [HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND](https://holderbook.com/funds/1535845-healthcare-of-ontario-pension-plan-trust-fund/) | $7.9M | 800,000 | 0.0% | 2 |
| [Magnetar Financial LLC](https://holderbook.com/funds/1352851-magnetar-financial-llc/) | $6.0M | 600,000 | 0.1% | 1 |
| [MMCAP International Inc. SPC](https://holderbook.com/funds/1304857-mmcap-international-inc-spc/) | $6.0M | 600,000 | 0.5% | 1 |
| [AQR Arbitrage LLC](https://holderbook.com/funds/1167456-aqr-arbitrage-llc/) | $5.8M | 584,964 | 0.1% | 2 |
| [BNP PARIBAS FINANCIAL MARKETS](https://holderbook.com/funds/1166588-bnp-paribas-financial-markets/) | $5.4M | 546,532 | 0.0% | 2 |
| [MILLENNIUM MANAGEMENT LLC](https://holderbook.com/funds/1273087-millennium-management-llc/) | $4.2M | 425,000 | 0.0% | 1 |
| [D. E. Shaw & Co., Inc.](https://holderbook.com/funds/1009207-d-e-shaw-co-inc/) | $4.2M | 420,601 | 0.0% | 2 |
| [Verition Fund Management LLC](https://holderbook.com/funds/1454027-verition-fund-management-llc/) | $4.0M | 400,000 | 0.0% | 2 |
| [Alberta Investment Management Corp](https://holderbook.com/funds/1463559-alberta-investment-management-corp/) | $4.0M | 400,000 | 0.0% | 1 |
| [First Trust Capital Management L.P.](https://holderbook.com/funds/1604488-first-trust-capital-management-l-p/) | $4.0M | 399,998 | 0.2% | 2 |
| [WHITEBOX ADVISORS LLC](https://holderbook.com/funds/1257391-whitebox-advisors-llc/) | $3.7M | 375,200 | 0.0% | 2 |
| [Crossingbridge Advisors, LLC](https://holderbook.com/funds/1770024-crossingbridge-advisors-llc/) | $3.5M | 350,000 | 0.6% | 1 |
| [Radcliffe Capital Management, L.P.](https://holderbook.com/funds/1218275-radcliffe-capital-management-l-p/) | $3.0M | 299,570 | 0.2% | 2 |
| [TWO SIGMA INVESTMENTS, LP](https://holderbook.com/funds/1179392-two-sigma-investments-lp/) | $2.7M | 271,875 | 0.0% | 2 |
| [Centiva Capital, LP](https://holderbook.com/funds/1692507-centiva-capital-lp/) | $2.5M | 250,700 | 0.0% | 2 |
| [Context Capital Management, LLC](https://holderbook.com/funds/1301396-context-capital-management-llc/) | $2.5M | 250,000 | 0.0% | 2 |
| [HGC Investment Management Inc.](https://holderbook.com/funds/1711200-hgc-investment-management-inc/) | $2.5M | 250,000 | 0.5% | 2 |
| [Periscope Capital Inc.](https://holderbook.com/funds/1695320-periscope-capital-inc/) | $2.4M | 241,000 | 0.2% | 2 |
| [COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS](https://holderbook.com/funds/1083190-commonwealth-of-pennsylvania-public-school-empls-retrmt-sys/) | $2.3M | 229,662 | 0.0% | 2 |
| [Cable Car Capital, LP](https://holderbook.com/funds/1699575-cable-car-capital-lp/) | $2.2M | 225,000 | 0.0% | 1 |

## Quarter by quarter

| Quarter | Holders | Reported value |
|---|---|---|
| Q2 2026 | 43 | $150.6M |
| Q1 2026 | 32 | $106.4M |