Who Owns AMPERCAP ACQUISITION CO (APMCU)? -- Institutional Holders (2026-06-30)
43 institutions reported holding $91.3M of AMPERCAP ACQUISITION CO (APMCU) in SEC 13F filings for 2026-06-30. Largest institutional holders: Magnetar Financial LLC ($12.0M), Wealthspring Capital LLC ($9.7M), GLAZER CAPITAL, LLC ($6.9M), AQR Arbitrage LLC ($6.5M), First Trust Capital Management L.P. ($6.3M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|
| 1 | Magnetar Financial LLC | $12.0M | 1.2M | New |
| 2 | Wealthspring Capital LLC | $9.7M | 963,290 | New |
| 3 | GLAZER CAPITAL, LLC | $6.9M | 690,000 | New |
| 4 | AQR Arbitrage LLC | $6.5M | 651,015 | New |
| 5 | First Trust Capital Management L.P. | $6.3M | 630,601 | New |
| 6 | Shaolin Capital Management LLC | $4.1M | 405,851 | New |
| 7 | Clear Street Group Inc. | $4.0M | 422,655 | New |
| 8 | TUDOR INVESTMENT CORP ET AL | $3.2M | 315,000 | New |
| 9 | RIVERNORTH CAPITAL MANAGEMENT, LLC | $3.0M | 300,000 | New |
| 10 | LMR Partners LLP | $2.5M | 250,000 | New |
| 11 | BERKLEY W R CORP | $2.5M | 247,605 | New |
| 12 | CANTOR FITZGERALD, L. P. | $2.1M | 211,449 | New |
| 13 | TORONTO DOMINION BANK | $2.0M | 200,000 | New |
| 14 | WHITEBOX ADVISORS LLC | $2.0M | 200,000 | New |
| 15 | BNP PARIBAS FINANCIAL MARKETS | $2.0M | 198,985 | New |
| 16 | Periscope Capital Inc. | $1.8M | 175,500 | New |
| 17 | Linden Advisors LP | $1.8M | 175,000 | New |
| 18 | Yakira Capital Management, Inc. | $1.5M | 150,000 | New |
| 19 | Radcliffe Capital Management, L.P. | $1.5M | 150,000 | New |
| 20 | ARISTEIA CAPITAL, L.L.C. | $1.5M | 150,000 | New |
| 21 | Calamos Advisors LLC | $1.5M | 150,000 | New |
| 22 | MOORE CAPITAL MANAGEMENT, LP | $1.3M | 130,000 | New |
| 23 | Westchester Capital Management, LLC | $1.3M | 130,000 | New |
| 24 | Mint Tower Capital Management B.V. | $1.3M | 125,000 | New |
| 25 | GRITSTONE ASSET MANAGEMENT LLC | $1.3M | 124,988 | New |
Source: SEC Form 13F filings · as of 2026-06-30