Mountain Lake AcquisitionMLACRPreferred / convertible
13F holders, Q2 2025 (June 30)At the end of Q2 2025, 39 institutions reported holding Mountain Lake Acquisition Co. (MLACR) in their 13F filings, up 9 from Q1 2025. 2 opened new positions and 1 sold out. The largest holders were Harraden Circle Investments, LLC ($504K), AQR Arbitrage LLC ($337K) and Polar Asset Management Partners Inc. ($320K). 2 famous investors held it, including David E. Shaw ( of D. E. Shaw & Co.'s portfolio) and Israel Englander ( of Millennium Management's portfolio).
- Company
- Mountain Lake Acquisition Co.
- CUSIP
- G6301B127
- Latest filing quarter
- Q1 2026
History
Number of 13F holders
Total Exit/New Position Q1 2025 → Q2 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 2 | $251K |
| Exits | 1 | $1.0M |
All 13F filers, Q1 2025 → Q2 2025: 3,296,161 shares bought and 1,376,839 shares sold, net +1,919,322 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 39 holders
| Harraden Circle Investments, LLC | — | Add +43.2% | 2,965,052 | $504K |
| AQR Arbitrage LLC | — | No change | 1,980,000 | $337K |
| Polar Asset Management Partners Inc. | — | No change | 1,880,000 | $320K |
| Rangeley Capital, LLC | — | Reduce -62.5% | 30,000 | $308K |
| Magnetar Financial LLC | — | No change | 1,900,000 | $304K |
| Linden Advisors LP | — | Add +34.3% | 1,175,000 | $188K |
| Verition Fund Management LLC | — | Add +6.5% | 995,333 | $169K |
| Alberta Investment Management Corp | — | New | 980,000 | $167K |
| D. E. Shaw & Co. | — | No change | 725,000 | $123K |
| HGC Investment Management Inc. | — | No change | 700,000 | $119K |
| Westchester Capital Management, LLC | — | No change | 805,100 | $113K |
| Shaolin Capital Management LLC | — | Add +18.2% | 650,000 | $111K |
| Wolverine Asset Management LLC | — | No change | 575,000 | $98K |
| TENOR CAPITAL MANAGEMENT Co., L.P. | — | No change | 500,000 | $85K |
| LMR Partners LLP | — | No change | 500,000 | $85K |
| Toronto Dominion Bank | — | New | 497,500 | $85K |
| Millennium Management | — | No change | 450,000 | $77K |
| Periscope Capital Inc. | — | Add +41.6% | 424,739 | $68K |
| Hudson Bay Capital Management LP | — | Reduce -11.1% | 400,000 | $64K |
| K2 Principal Fund, L.P. | — | Reduce -0.0% | 366,649 | $51K |
| Whitebox Advisors LLC | — | No change | 300,000 | $51K |
| Parallax Volatility Advisers, L.P. | — | Add +197.3% | 297,300 | $48K |
| CSS LLC | — | No change | 275,000 | $47K |
| Alpine Global Management, LLC | — | No change | 300,034 | $42K |
| Picton Mahoney Asset Management | — | No change | 250,000 | $41K |
| Clear Street LLC | — | Add +0.4% | 228,376 | $39K |
| Moore Capital Management, LP | — | No change | 200,000 | $34K |
| Glazer Capital, LLC | — | Reduce -52.1% | 206,859 | $29K |
| Cantor Fitzgerald, L. P. | — | No change | 169,400 | $29K |
| Gritstone Asset Management LLC | — | No change | 169,310 | $29K |
| Schonfeld Strategic Advisors LLC | — | Reduce -14.2% | 151,424 | $24K |
| Decagon Asset Management LLP | — | No change | 128,390 | $22K |
| Wealthspring Capital LLC | — | Add +1391.7% | 150,960 | $21K |
| Mint Tower Capital Management B.V. | — | No change | 100,000 | $17K |
| Commonwealth of Pennsylvania Public School Empls Retrmt SYS | — | Reduce -2.9% | 67,600 | $11K |
| Mizuho Securities USA LLC | — | — | 84,697 | $10K |
| Atw Spac Management LLC | — | No change | 30,000 | $5K |
| Boothbay Fund Management, LLC | — | No change | 30,000 | $5K |
| Centiva Capital, LP | — | No change | 25,100 | $4K |
"% of holder's portfolio" is MLACR's weight in each manager's 13F, not the share of Mountain Lake Acquisition Co. the manager owns.