3 institutions reported holding $11.5M of AMPERCAP ACQUISITION CO (APMCU) in SEC 13F filings for 2026-06-30. Largest institutional holders: Wealthspring Capital LLC ($9.7M), Calamos Advisors LLC ($1.5M), ABC ARBITRAGE SA ($301,200). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | Wealthspring Capital LLC | $9.7M | 963,290 | New |
| 2 | Calamos Advisors LLC | $1.5M | 150,000 | New |
| 3 | ABC ARBITRAGE SA | $301,200 | 30,000 | New |
Source: SEC Form 13F filings · as of 2026-06-30