46 institutions reported holding $18.2M of MOUNTAIN LAKE ACQUISITION CO (MLAC) in SEC 13F filings for 2026-06-30. Largest institutional holders: MIZUHO SECURITIES USA LLC ($18.0M), Crossingbridge Advisors, LLC ($265,585), D. E. Shaw & Co., Inc. ($0), Karpus Management, Inc. ($0), GLAZER CAPITAL, LLC ($0). Source: SEC Form 13F.
| Rank | Institution | Value | Shares | Change |
|---|---|---|---|---|
| 1 | MIZUHO SECURITIES USA LLC | $18.0M | 1.7M | Hold |
| 2 | Crossingbridge Advisors, LLC | $265,585 | 24,961 | Trimmed |
| 3 | D. E. Shaw & Co., Inc. | $0 | 0 | Exited |
| 4 | Karpus Management, Inc. | $0 | 0 | Exited |
| 5 | GLAZER CAPITAL, LLC | $0 | 0 | Exited |
| 6 | ARISTEIA CAPITAL, L.L.C. | $0 | 0 | Exited |
| 7 | BERKLEY W R CORP | $0 | 0 | Exited |
| 8 | AQR Arbitrage LLC | $0 | 0 | Exited |
| 9 | Radcliffe Capital Management, L.P. | $0 | 0 | Exited |
| 10 | WHITEBOX ADVISORS LLC | $0 | 0 | Exited |
| 11 | DELTEC ASSET MANAGEMENT LLC | $0 | 0 | Exited |
| 12 | MILLENNIUM MANAGEMENT LLC | $0 | 0 | Exited |
| 13 | Linden Advisors LP | $0 | 0 | Exited |
| 14 | WOLVERINE ASSET MANAGEMENT LLC | $0 | 0 | Exited |
| 15 | Polar Asset Management Partners Inc. | $0 | 0 | Exited |
| 16 | TENOR CAPITAL MANAGEMENT Co., L.P. | $0 | 0 | Exited |
| 17 | Magnetar Financial LLC | $0 | 0 | Exited |
| 18 | Hudson Bay Capital Management LP | $0 | 0 | Exited |
| 19 | RIVERNORTH CAPITAL MANAGEMENT, LLC | $0 | 0 | Exited |
| 20 | MOORE CAPITAL MANAGEMENT, LP | $0 | 0 | Exited |
| 21 | Alberta Investment Management Corp | $0 | 0 | Exited |
| 22 | Westchester Capital Management, LLC | $0 | 0 | Exited |
| 23 | Rangeley Capital, LLC | $0 | 0 | Exited |
| 24 | PICTON MAHONEY ASSET MANAGEMENT | $0 | 0 | Exited |
| 25 | DLD Asset Management, LP | $0 | 0 | Exited |
Source: SEC Form 13F filings · as of 2026-06-30