44 tracked 13F filers disclose a position in ATII as of the latest SEC 13F filings, a combined $207.6M 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 | TENOR CAPITAL MANAGEMENT Co., L.P. | $15.6M | 1.5M | —Held | Q1 2026 | |
| 2 | Magnetar Financial LLC | $13.6M | 1.3M | —Held | Q1 2026 | |
| 3 | D. E. Shaw & Co., Inc. | $11.9M | 1.1M | —Held | Q1 2026 | |
| 4 | LINDEN ADVISORS LP | $10.4M | 1.0M | —Held | Q1 2026 | |
| 5 | AQR Arbitrage LLC | $9.6M | 921K | ▼−4.5% Reduced · −44K sh | Q1 2026 | |
| 6 | Westchester Capital Management, LLC | $9.4M | 907K | —Held | Q1 2026 | |
| 7 | LMR Partners LLP | $8.8M | 850K | —Held | Q1 2026 | |
| 8 | Ghisallo Capital Management LLC | $8.3M | 800K | —Held | Q1 2026 | |
| 9 | Governors Lane LP | $7.9M | 760K | ▲+0.1% Added · +939 sh | Q1 2026 | |
| 10 | Alberta Investment Management Corp | $7.8M | 750K | —Held | Q1 2026 | |
| 11 | TWO SIGMA INVESTMENTS, LP | $7.5M | 725K | —Held | Q1 2026 | |
| 12 | Hudson Bay Capital Management LP | $7.3M | 700K | —Held | Q1 2026 | |
| 13 | Radcliffe Capital Management, L.P. | $6.9M | 661K | ▲+0.5% Added · +3K sh | Q1 2026 | |
| 14 | TORONTO DOMINION BANK | $6.8M | 650K | ▲+333% Added · +500K sh | Q1 2026 | |
| 15 | Sculptor Capital LP | $6.3M | 601K | —Held | Q1 2026 | |
| 16 | Jain Global LLC | $5.2M | 500K | —Held | Q1 2026 | |
| 17 | PICTON MAHONEY ASSET MANAGEMENT | $5.2M | 500K | —Held | Q1 2026 | |
| 18 | MOORE CAPITAL MANAGEMENT, LP | $4.7M | 450K | —Held | Q1 2026 | |
| 19 | RIVERNORTH CAPITAL MANAGEMENT, LLC | $4.5M | 428K | ▼−4.5% Reduced · −20K sh | Q1 2026 | |
| 20 | COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS | $4.2M | 400K | —Held | Q1 2026 | |
| 21 | J. Goldman & Co LP | $3.8M | 370K | ▲New +370K sh | Q1 2026 | |
| 22 | GOLDMAN SACHS GROUP INC | $3.4M | 327K | ▲+1.1% Added · +4K sh | Q1 2026 | |
| 23 | MILLENNIUM MANAGEMENT LLC | $3.2M | 308K | —Held | Q1 2026 | |
| 24 | METEORA CAPITAL, LLC | $3.1M | 296K | ▼−59% Reduced · −423K sh | Q1 2026 | |
| 25 | Centiva Capital, LP | $3.0M | 286K | —Held | 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, 5 funds opened a new position in ATII and 3 added to an existing one, while 4 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 |
|---|---|---|
| WEN ACQUISITION CORP-AWENN | 23 funds | $93.7M |
| PROCAP ACQUISITION CORP - APCAP | 23 funds | $92.3M |
| CANTOR EQUITY PARTNERS-CL ACEPF | 22 funds | $103.5M |
| CANTOR EQUITY PARTNERS-CL ACEPV | 22 funds | $69.7M |
| CAL REDWOOD ACQUISIT-CL ACRAQ | 21 funds | $92.2M |
| TRAILBLAZER ACQUISITION-CL ABLZR | 21 funds | $75.2M |
| D. BORAL ARC ACQUISIT - CL ABCAR | 21 funds | $68.8M |
| CANTOR EQUITY PARTNERS III-ACAEP | 21 funds | $61.1M |
| NEW PROVIDENCE ACQUISITION-ANPAC | 20 funds | $153.0M |
| ALDEL FINANCIAL II INCALDF | 20 funds | $120.7M |
| BLUE WATER ACQUISITION C-ABLUW | 20 funds | $97.5M |
| COHEN CIRCLE ACQUISIT II - ACCII | 20 funds | $54.0M |
Ranked by how many of ATII's institutional holders also hold each name, a cross-fund conviction signal.
| Date | Insider | Role | Action | Shares | Value |
|---|---|---|---|---|---|
| Feb 12, 2025 | Long Long | Chief Executive Officer, Director, 10% Owner | Buy (P) | 530K | — |
| Feb 12, 2025 | Archimedes Tech SPAC Sponsors II LLC | 10% Owner | Buy (P) | 530K | — |
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/ATII/capital-change-brief"
Use Arkolith's capital_change_brief for ATII. 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 ATII. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.