24 tracked 13F filers disclose a position in HYAC as of the latest SEC 13F filings, a combined $165.4M 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 | AMERICAN CENTURY COMPANIES INC | $31.2M | 2.7M | ▲New +2.7M sh | Q1 2026 | |
| 2 | BERKLEY W R CORP | $26.7M | 2.3M | ▲+18% Added · +357K sh | Q1 2026 | |
| 3 | Harraden Circle Investments, LLC | $23.4M | 2.0M | ▲67× Added · +2.0M sh | Q1 2026 | |
| 4 | Westchester Capital Management, LLC | $22.2M | 1.9M | —Held | Q1 2026 | |
| 5 | Polar Asset Management Partners Inc. | $10.0M | 1.0M | ▲+130% Added · +565K sh | Q1 2026 | |
| 6 | LINDEN ADVISORS LP | $10.4M | 900K | —Held | Q1 2026 | |
| 7 | AQR Arbitrage LLC | $7.9M | 681K | ▼−0.7% Reduced · −5K sh | Q1 2026 | |
| 8 | D. E. Shaw & Co., Inc. | $7.0M | 604K | —Held | Q1 2026 | |
| 9 | Alberta Investment Management Corp | $4.6M | 400K | —Held | Q1 2026 | |
| 10 | Limestone Investment Advisors LP | Withheld | 392K | ▲20× Added · +373K sh | Q1 2026 | |
| 11 | HSBC HOLDINGS PLC | $3.9M | 331K | —Held | Q1 2026 | |
| 12 | MOORE CAPITAL MANAGEMENT, LP | $3.5M | 300K | —Held | Q1 2026 | |
| 13 | Fort Baker Capital Management LP | $2.9M | 250K | ▼−89% Reduced · −2.1M sh | Q1 2026 | |
| 14 | First Trust Capital Management L.P. | $2.8M | 244K | ▼−83% Reduced · −1.2M sh | Q1 2026 | |
| 15 | SUSQUEHANNA INTERNATIONAL GROUP, LLP | $2.4M | 207K | ▲+44% Added · +63K sh | Q1 2026 | |
| 16 | Shaolin Capital Management LLC | $2.3M | 200K | ▼−20% Reduced · −50K sh | Q1 2026 | |
| 17 | WEXFORD CAPITAL LP | $0 | 148K | ▼−70% Reduced · −352K sh | Q1 2026 | |
| 18 | OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AM | $1.1M | 100K | —Held | Q4 2025 | |
| 19 | Hudson Bay Capital Management LP | $848K | 74K | ▼−1.3% Reduced · −1K sh | Q1 2026 | |
| 20 | CastleKnight Management LP | $851K | 74K | ▲New +74K sh | Q1 2026 | |
| 21 | KORNITZER CAPITAL MANAGEMENT INC /KS | $692K | 60K | ▲New +60K sh | Q1 2026 | |
| 22 | RIVERNORTH CAPITAL MANAGEMENT, LLC | $581K | 51K | —Held | Q1 2026 | |
| 23 | UBS Group AG | $62K | 5K | ▲New +5K sh | Q1 2026 | |
| 24 | 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.
Last quarter, 2 funds opened a new position in HYAC and 3 added to an existing one, while 6 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 |
|---|---|---|
| LEGATO MERGER CORP IIILEGT | 14 funds | $101.5M |
| ARTIUS II ACQUISITION INC-AAACB | 14 funds | $91.7M |
| CANTOR EQUITY PARTNERS-CL ACEPV | 14 funds | $64.4M |
| REAL ASSET ACQUISITI-CLASS ARAAQ | 14 funds | $62.8M |
| GORES HOLDINGS X INC-CL AGTEN | 13 funds | $126.5M |
| EQV VENTURES ACQUISITION C-AEVAC | 13 funds | $111.9M |
| CANTOR EQUITY PARTNERS-CL ACEPF | 13 funds | $110.9M |
| ALDEL FINANCIAL II INCALDF | 13 funds | $107.7M |
| ANDRETTI ACQUISITION CORP -APOLE | 13 funds | $105.8M |
| MOUNTAIN LAKE ACQUISITION-AMLAC | 13 funds | $105.4M |
| BERTO ACQUISITION CORPTACO | 13 funds | $103.5M |
| BLUE WATER ACQUISITION C-ABLUW | 13 funds | $87.4M |
Ranked by how many of HYAC's institutional holders also hold each name, a cross-fund conviction signal.
No open-market insider transactions on file yet. Grants, gifts, and exercises live on the full insider page.
| Class | 13F holders | Value held |
|---|---|---|
| HYACthis pageEquity | 24 funds | $166.5M |
| G4375F116WARRANT | 20 funds | $26.4M |
| G4375F124UNIT 99/99/9999 | 1 funds | $10K |
Same issuer, multiple share classes. The consensus leaderboards count this company once across all classes; this is the per-class detail.
Connected entities for HYAC
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/HYAC/capital-change-brief"
Use Arkolith's capital_change_brief for HYAC. 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 HYAC. Filings are public domain, sourced to SEC EDGAR; price series derived from end-of-day closes.