Mountain Lake AcquisitionMLACRPreferred / convertible
13F holders, Q1 2026 (March 31)At the end of Q1 2026, 40 institutions reported holding Mountain Lake Acquisition Co. (MLACR) in their 13F filings, down 2 from Q4 2025. 1 opened new positions and 4 sold out. The largest holders were Harraden Circle Investments, LLC ($865K), Magnetar Financial LLC ($494K) and Polar Asset Management Partners Inc. ($489K). 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 Q4 2025 → Q1 2026
| Institutions | Total Value | |
|---|---|---|
| New Positions | 1 | $3K |
| Exits | 4 | $26K |
All 13F filers, Q4 2025 → Q1 2026: 10,283 shares bought and 468,155 shares sold, net −457,872 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 40 holders
| Harraden Circle Investments, LLC | — | Reduce -0.0% | 3,325,566 | $865K |
| Magnetar Financial LLC | — | No change | 1,900,000 | $494K |
| Polar Asset Management Partners Inc. | — | No change | 1,880,000 | $489K |
| AQR Arbitrage LLC | — | Reduce -2.5% | 1,495,890 | $389K |
| Alberta Investment Management Corp | — | No change | 980,000 | $255K |
| Linden Advisors LP | — | No change | 1,175,000 | $247K |
| Meteora Capital, LLC | — | Reduce -18.5% | 826,755 | $215K |
| Toronto Dominion Bank | — | Reduce -1.7% | 743,723 | $193K |
| Verition Fund Management LLC | — | Reduce -0.1% | 727,509 | $189K |
| D. E. Shaw & Co. | — | No change | 725,000 | $189K |
| Westchester Capital Management, LLC | — | No change | 700,013 | $182K |
| TENOR CAPITAL MANAGEMENT Co., L.P. | — | No change | 500,000 | $130K |
| Rivernorth Capital Management, LLC | — | No change | 500,000 | $130K |
| LMR Partners LLP | — | No change | 500,000 | $130K |
| Shaolin Capital Management LLC | — | No change | 479,500 | $125K |
| Millennium Management | — | No change | 450,000 | $117K |
| BNP Paribas Financial Markets | — | No change | 446,094 | $116K |
| CSS LLC | — | No change | 35,056 | $91K |
| Wolverine Asset Management LLC | — | Reduce -8.5% | 333,554 | $87K |
| DLD Asset Management, LP | — | No change | 325,000 | $85K |
| Periscope Capital Inc. | — | Reduce -1.2% | 321,184 | $84K |
| Whitebox Advisors LLC | — | No change | 300,000 | $78K |
| Hudson Bay Capital Management LP | — | Reduce -14.4% | 299,715 | $78K |
| Saba Capital Management, L.P. | — | No change | 350,017 | $74K |
| Clear Street Group Inc. | — | Add +0.1% | 212,579 | $55K |
| Moore Capital Management, LP | — | No change | 200,000 | $52K |
| Wealthspring Capital LLC | — | Reduce -0.1% | 150,370 | $39K |
| Glazer Capital, LLC | — | No change | 143,986 | $37K |
| K2 Principal Fund, L.P. | — | Reduce -23.1% | 113,489 | $30K |
| Picton Mahoney Asset Management | — | No change | 100,000 | $26K |
| Mint Tower Capital Management B.V. | — | No change | 100,000 | $26K |
| RLH Capital LLC | — | — | 100,000 | $26K |
| Schonfeld Strategic Advisors LLC | — | Reduce -23.0% | 89,254 | $23K |
| Decagon Asset Management LLP | — | No change | 69,665 | $18K |
| Boothbay Fund Management, LLC | — | Reduce -6.7% | 67,840 | $18K |
| Parallax Volatility Advisers, L.P. | — | Reduce -19.1% | 77,140 | $17K |
| Quarry LP | — | No change | 50,000 | $13K |
| HGC Investment Management Inc. | — | No change | 40,000 | $10K |
| Readystate Asset Management LP | — | No change | 24,779 | $6K |
| Two Sigma Securities, LLC | — | New | 10,183 | $3K |
"% of holder's portfolio" is MLACR's weight in each manager's 13F, not the share of Mountain Lake Acquisition Co. the manager owns.