The public view is the crawlable proof. The same sourced dataset is available through REST and MCP for agents, research scripts, and back-office tools.
This stock page is the Follow view. The Build view lets your agent query HYAC owners, fund changes, insider filings, and source links through REST or MCP.
curl -H "Authorization: Bearer YOUR_API_KEY" \ "https://arkolith.com/api/v1/stocks/HYAC"
Use Arkolith to show who owns HYAC, which funds added or reduced it, and which SEC filings prove each claim.
| # | Fund | Position value | Shares | Last move | As of | History |
|---|---|---|---|---|---|---|
| 1 | Westchester Capital Management, LLC | $22.2M | 1.9M | —Held | Q1 2026 | |
| 2 | WASATCH ADVISORS LP | $19.3M | 1.7M | ▲New +1.7M sh | Q1 2026 | |
| 3 | Polar Asset Management Partners Inc. | $10.0M | 1.0M | ▲+130% Added · +565K sh | Q1 2026 | |
| 4 | AQR Arbitrage LLC | $7.9M | 681K | ▼−0.7% Reduced · −5K sh | Q1 2026 | |
| 5 | Alberta Investment Management Corp | $4.6M | 400K | —Held | Q1 2026 | |
| 6 | MOORE CAPITAL MANAGEMENT, LP | $3.5M | 300K | —Held | Q1 2026 | |
| 7 | First Trust Capital Management L.P. | $2.8M | 244K | ▼−83% Reduced · −1.2M sh | Q1 2026 | |
| 8 | Shaolin Capital Management LLC | $2.3M | 200K | ▼−20% Reduced · −50K sh | Q1 2026 | |
| 9 | Calamos Advisors LLC | $1.2M | 100K | —Held | Q1 2026 | |
| 10 | CastleKnight Management LP | $851K | 74K | ▲New +74K sh | Q1 2026 | |
| 11 | Hudson Bay Capital Management LP | $848K | 74K | ▼−1.3% Reduced · −1K sh | Q1 2026 | |
| 12 | RIVERNORTH CAPITAL MANAGEMENT, LLC | $581K | 51K | —Held | Q1 2026 | |
| 13 | NewEdge Advisors, LLC | $15K | 1K | ▲New +1K 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.
No Form 4 insider transactions on file yet.
| Company | Co-held by | Combined value |
|---|---|---|
| ANDRETTI ACQUISITION CORP -APOLE | 15 funds | $106.3M |
| BERTO ACQUISITION CORPTACO | 14 funds | $83.3M |
| LEGATO MERGER CORP IIILEGT | 14 funds | $81.1M |
| SOULPOWER ACQUISITION CO-ASOUL | 14 funds | $73.7M |
| CANTOR EQUITY PARTNERS-CL ACEPV | 14 funds | $60.1M |
| CAL REDWOOD ACQUISIT-CL ACRAQ | 14 funds | $55.8M |
| HOLOGIC INCHO1 | 13 funds | $617.5M |
| GP-ACT III ACQUISITION-AGPAT | 13 funds | $111.8M |
| IDEA ACQUISITION CORPIACOU | 13 funds | $104.3M |
| HCM IV ACQUISITION CORPHACQU | 13 funds | $91.8M |
| GORES HOLDINGS X INC-CL AGTEN | 13 funds | $90.2M |
| NEW PROVIDENCE ACQUISITION-ANPAC | 13 funds | $89.2M |
Ranked by how many of HYAC's institutional holders also hold each name, a cross-fund conviction signal. Via the MCP server (ticker.co_held).
No filings captured for this ticker in the live stream yet.
13F holdings + Form 4 insider transactions + end-of-day price history + the live filing stream, joined for HYAC. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes. Every panel above is one call to the Arkolith API & MCP server.