Among active 13F managers last quarter, 13 opened and 1 added, while 1 reduced; the largest holder to move was Adage Capital Partners GP, L.L.C. (new position). No open-market insider trades in the last 180 days.
Funds lean in and no leg opposes.
35 tracked 13F filers disclose a position in IRAB as of the latest SEC 13F filings, a combined $122.3M in reported value. Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
| # | Fund | Shares | Position value | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Adage Capital Partners GP, L.L.C. | 1.4M | $13.3M | ▲New +1.4M sh | Q1 2026 | |
| 2 | Aristeia Capital, L.L.C. | 1.2M | $11.5M | ▲New +1.2M sh | Q2 2026 | |
| 3 | Tenor Capital Management Co., L.P. | 1.0M | $9.9M | —Held | Q2 2026 | |
| 4 | Healthcare Of Ontario Pension Plan Trust Fund | 800K | $7.9M | ▲New +800K sh | Q1 2026 | |
| 5 | Linden Advisors LP | 800K | $7.9M | ▲New +800K sh | Q1 2026 | |
| 6 | Magnetar Financial LLC | 600K | $6.0M | ▲New +600K sh | Q2 2026 | |
| 7 | AQR Arbitrage LLC | 585K | $5.8M | ▲+1.1% Added · +7K sh | Q2 2026 | |
| 8 | BNP Paribas Financial Markets | 547K | $5.4M | ▲New +547K sh | Q1 2026 | |
| 9 | D. E. Shaw & Co., Inc. | 421K | $4.1M | ▲New +421K sh | Q1 2026 | |
| 10 | Alberta Investment Management Corp | 400K | $4.0M | ▲New +400K sh | Q2 2026 | |
| 11 | First Trust Capital Management L.P. | 400K | $4.0M | —Held | Q2 2026 | |
| 12 | Whitebox Advisors LLC | 375K | $3.7M | —Held | Q2 2026 | |
| 13 | Crossingbridge Advisors, LLC | 350K | $3.5M | ▲New +350K sh | Q2 2026 | |
| 14 | Radcliffe Capital Management, L.P. | 300K | $3.0M | —Held | Q2 2026 | |
| 15 | Two Sigma Investments, LP | 272K | $2.7M | ▲New +272K sh | Q1 2026 | |
| 16 | Centiva Capital, LP | 251K | $2.5M | —Held | Q2 2026 | |
| 17 | Context Capital Management, LLC | 250K | $2.5M | —Held | Q2 2026 | |
| 18 | HGC Investment Management Inc. | 250K | $2.5M | —Held | Q2 2026 | |
| 19 | Periscope Capital Inc. | 241K | $2.4M | —Held | Q2 2026 | |
| 20 | Cable Car Capital, LP | 225K | $2.2M | ▲New +225K sh | Q2 2026 | |
| 21 | Lineage Point Capital LP | 220K | $2.2M | —Held | Q2 2026 | |
| 22 | Shaolin Capital Management LLC | 201K | $2.0M | ▼−50% Reduced · −199K sh | Q2 2026 | |
| 23 | Verition Fund Management LLC | 200K | $2.0M | —Held | Q2 2026 | |
| 24 | Rivernorth Capital Management, LLC | 200K | $2.0M | —Held | Q2 2026 | |
| 25 | Berkley W R Corp | 199K | $2.0M | ▲New +199K sh | Q1 2026 |
Holders and values reflect the 13F filers Arkolith currently tracks, not the entire institutional universe. Counts and totals are a floor, not the full institutional ownership.
Last quarter, 13 funds opened a new position in IRAB and 1 added to an existing one, while 1 reduced. Based on 13F filings from active, signal-eligible managers (passive index funds and other mechanical holders are excluded from this count).
| Company | Co-held by | Their position there |
|---|---|---|
| Hall Chadwick Acquisition-AHCAC | 28 funds | $118.4M |
| M Evo Global Acquisitio-CL AMEVO | 27 funds | $173.3M |
| Cantor Equity Partners-CL ACEPF | 27 funds | $166.9M |
| Republic Digital Acquis-CL ARDAG | 27 funds | $144.0M |
| Mountain Lake Acquisiti-CL AMLAA | 26 funds | $191.5M |
| Meshflow Acquisition Co-CL AMESH | 26 funds | $173.2M |
| Soulpower Acquisition Co-ASOUL | 26 funds | $170.7M |
| Crane Harbor Acquisitio-CL ACRAN | 26 funds | $167.0M |
| Evolution Global Acquis-CL AEVOX | 26 funds | $133.0M |
| Trailblazer Acquisition-CL ABLZR | 26 funds | $130.2M |
| Ithax Acquisition Corp-CL AITHA | 26 funds | $123.9M |
| Bluerock Acquisition Corp-ABLRK | 26 funds | $88.6M |
Ranked by how many of IRAB's tracked holders also hold each name. The last column is those co-holders' combined reported position in that name, not in IRAB.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Feb 4, 2026 | Iris Acquisition Holdings II LLC | 10% Owner | Buy (P) | 251K | — |
| Feb 4, 2026 | Mehta Sumit | Chief Executive Officer | Buy (P) | 251K | — |
| Feb 4, 2026 | Nanani Rohit | Director | Buy (P) | 251K | — |
Where institutional funds (13F), corporate insiders (Form 4) and US House members (STOCK Act) are buying or selling the same name in the same window. Green is buying, red is selling.
Insiders and Congress: last 180 days. Funds: latest 13F, top 100 holders incl. passive
| Source | Buying | Selling | Net |
|---|---|---|---|
13F funds Top 100 holders by value, passive included; the hero counts active managers only | 1 | 2 | – |
Insiders Form 4 open-market | 0 | 0 | $0 |
US House STOCK Act trades | 0 | 0 | $0 |
Capital Rotation reports where institutional capital disclosed rotating, as of the latest public SEC 13F filings. It is data, not investment advice, a recommendation, or a prediction. Filings lag about 45 days and cover long US equity positions only. Past disclosed flows do not indicate future prices. Do your own research; consult a licensed advisor.
| Class | 13F holders | Value held |
|---|---|---|
| IRABthis pageORD SHS CL A | 35 funds | $122.3M |
| G4940M117Warrant | 33 funds | $1.6M |
| IRAB/UUnit | 5 funds | $14.5M |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for IRAB
This stock page is the public Follow view. For one current, evidence-backed answer, use capital_change_brief through REST or MCP. It compares tracked 13F changes with qualifying Form 4 activity and cites the SEC evidence.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/IRAB/capital-change-brief"
Use Arkolith's capital_change_brief for IRAB. Tell me what changed, whether insider activity corroborates it, and cite the SEC evidence.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for IRAB. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.