15 institutions reported holding $24.1M of MOUNTAIN CREST ACQUISITION 6 (MCAHU) in SEC 13F filings for 2026-06-30. Largest institutional holders: RIVERNORTH CAPITAL MANAGEMENT, LLC ($5.1M), AQR Arbitrage LLC ($3.7M), MANGROVE PARTNERS IM, LLC ($3.0M), BOOTHBAY FUND MANAGEMENT, LLC ($2.5M), TORONTO DOMINION BANK ($2.2M). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | RIVERNORTH CAPITAL MANAGEMENT, LLC | $5.1M | 499,592 | New |
| 2 | AQR Arbitrage LLC | $3.7M | 366,100 | New |
| 3 | MANGROVE PARTNERS IM, LLC | $3.0M | 294,882 | New |
| 4 | BOOTHBAY FUND MANAGEMENT, LLC | $2.5M | 250,000 | New |
| 5 | TORONTO DOMINION BANK | $2.2M | 219,226 | New |
| 6 | Radcliffe Capital Management, L.P. | $1.5M | 150,000 | New |
| 7 | Calamos Advisors LLC | $1.5M | 150,000 | New |
| 8 | BNP PARIBAS FINANCIAL MARKETS | $1.4M | 133,900 | New |
| 9 | Lineage Point Capital LP | $1.3M | 129,777 | New |
| 10 | StoneX Group Inc. | $690,550 | 69,113 | New |
| 11 | PenderFund Capital Management Ltd. | $560,832 | 55,200 | New |
| 12 | Clear Street Group Inc. | $259,375 | 25,529 | New |
| 13 | ABC ARBITRAGE SA | $203,200 | 20,000 | New |
| 14 | JPMORGAN CHASE & CO | $101,600 | 10,000 | New |
| 15 | UBS Group AG | $691 | 68 | New |
Source: SEC Form 13F filings · as of 2026-06-30