38 tracked 13F filers disclose a position in AACOU as of the latest SEC 13F filings, a combined $167.3M 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 | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Magnetar Financial LLC | $19.4M | 1.9M | ▲New +1.9M sh | Q1 2026 | |
| 2 | ADAGE CAPITAL PARTNERS GP, L.L.C. | $17.9M | 1.8M | ▲New +1.8M sh | Q1 2026 | |
| 3 | LINDEN ADVISORS LP | $13.4M | 1.4M | ▲New +1.4M sh | Q1 2026 | |
| 4 | AQR Arbitrage LLC | $10.1M | 1.0M | ▲New +1.0M sh | Q1 2026 | |
| 5 | Polar Asset Management Partners Inc. | $9.9M | 1.0M | ▲New +1.0M sh | Q1 2026 | |
| 6 | MILLENNIUM MANAGEMENT LLC | $9.2M | 926K | ▲New +926K sh | Q1 2026 | |
| 7 | LMR Partners LLP | $8.9M | 900K | ▲New +900K sh | Q1 2026 | |
| 8 | HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | $8.0M | 800K | ▲New +800K sh | Q1 2026 | |
| 9 | TENOR CAPITAL MANAGEMENT Co., L.P. | $7.1M | 713K | ▲New +713K sh | Q1 2026 | |
| 10 | Alberta Investment Management Corp | $7.0M | 700K | ▲New +700K sh | Q1 2026 | |
| 11 | BNP PARIBAS FINANCIAL MARKETS | $6.8M | 686K | ▲New +686K sh | Q1 2026 | |
| 12 | Verition Fund Management LLC | $6.0M | 600K | ▲New +600K sh | Q1 2026 | |
| 13 | ARISTEIA CAPITAL, L.L.C. | $4.4M | 444K | ▲New +444K sh | Q1 2026 | |
| 14 | RIVERNORTH CAPITAL MANAGEMENT, LLC | $4.2M | 425K | ▲New +425K sh | Q1 2026 | |
| 15 | PICTON MAHONEY ASSET MANAGEMENT | $4.0M | 400K | ▲New +400K sh | Q1 2026 | |
| 16 | MOORE CAPITAL MANAGEMENT, LP | $4.0M | 400K | ▲New +400K sh | Q1 2026 | |
| 17 | TWO SIGMA INVESTMENTS, LP | $3.6M | 363K | ▲New +363K sh | Q1 2026 | |
| 18 | Radcliffe Capital Management, L.P. | $3.2M | 326K | ▲New +326K sh | Q1 2026 | |
| 19 | WHITEBOX ADVISORS LLC | $3.0M | 300K | ▲New +300K sh | Q1 2026 | |
| 20 | TORONTO DOMINION BANK | $2.3M | 230K | ▲New +230K sh | Q1 2026 | |
| 21 | Calamos Advisors LLC | $2.2M | 214K | ▲+8.0% Added · +16K sh | Q2 2026 | |
| 22 | Lineage Point Capital LP | $2.0M | 200K | ▲New +200K sh | Q1 2026 | |
| 23 | BERKLEY W R CORP | $1.6M | 160K | ▲New +160K sh | Q1 2026 | |
| 24 | Ghisallo Capital Management LLC | $1.5M | 150K | ▲New +150K sh | Q1 2026 | |
| 25 | Schonfeld Strategic Advisors LLC | $1.4M | 137K | ▲New +137K 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, 29 funds opened a new position in AACOU and 2 added to an existing one, while 0 reduced and 0 exited entirely — 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 | Combined value |
|---|---|---|
| IDEA ACQUISITION CORPIACOU | 27 funds | $187.1M |
| HCM IV ACQUISITION CORPHACQU | 25 funds | $143.6M |
| REPUBLIC DIGITAL ACQUIS-CL ARDAG | 25 funds | $121.5M |
| OXLEY BRIDGE ACQUISITIO-CL AOBA | 25 funds | $118.0M |
| SPARTACUS ACQU CORP IITMTSU | 25 funds | $114.1M |
| CANTOR EQUITY PARTNERS-CL ACEPV | 25 funds | $88.5M |
| NEW PROVIDENCE ACQUISITION-ANPAC | 24 funds | $183.4M |
| OYSTER ENTERPRISES II ACQ-AOYSE | 24 funds | $148.9M |
| SOULPOWER ACQUISITION CO-ASOUL | 24 funds | $148.1M |
| ARCHIMEDES TECH SPAC PARTNERATII | 24 funds | $143.5M |
| LIGHTWAVE ACQUISITION CORP-ALWAC | 24 funds | $118.9M |
| ACTIVATE ENERGY ACQUISITIO-AAEAQ | 24 funds | $115.4M |
Ranked by how many of AACOU's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Feb 20, 2026 | Abony Lorne | Chief Executive Officer, Director, 10% Owner | Buy (P) | 465K | — |
| Feb 20, 2026 | Abony Sponsor I LLC | 10% Owner | Buy (P) | 465K | — |
| Class | 13F holders | Value held |
|---|---|---|
| AACOUthis pageUnit | 38 funds | $167.3M |
| G00582109ORD SHS CL A | 1 funds | $346K |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for AACOU
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/AACOU/capital-change-brief"
Use Arkolith's capital_change_brief for AACOU. 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 AACOU. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.