Mountain Lake Acquisition-AMLAC
13F holders, Q4 2025 (December 31)At the end of Q4 2025, 48 institutions reported holding Mountain Lake Acquisition-A (MLAC) in their 13F filings, up 2 from Q3 2025. 8 opened new positions and 9 sold out. The largest holders were TENOR CAPITAL MANAGEMENT Co., L.P. ($20.8M), Magnetar Financial LLC ($19.8M) and Polar Asset Management Partners Inc. ($15.4M). 2 famous investors held it, including David E. Shaw (0.0% of D. E. Shaw & Co.'s portfolio) and Israel Englander (0.0% of Millennium Management's portfolio).
- Company
- Mountain Lake Acquisition-A
- CUSIP
- G6301B101
- Latest filing quarter
- Q2 2026
History
Number of 13F holders
Total Exit/New Position Q3 2025 → Q4 2025
| Institutions | Total Value | |
|---|---|---|
| New Positions | 8 | $25.5M |
| Exits | 9 | $23.1M |
All 13F filers, Q3 2025 → Q4 2025: 5,178,291 shares bought and 5,589,919 shares sold, net −411,628 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.
Ownership 48 holders
| TENOR CAPITAL MANAGEMENT Co., L.P. | 1.75% | Add +300.0% | 2,000,000 | $20.8M |
| Magnetar Financial LLC | 0.21% | No change | 1,900,000 | $19.8M |
| Polar Asset Management Partners Inc. | 0.40% | Reduce 0.0% | 1,479,935 | $15.4M |
| AQR Arbitrage LLC | 0.39% | Reduce -6.3% | 1,405,707 | $14.6M |
| First Trust Capital Management L.P. | 0.62% | Reduce -2.5% | 980,393 | $10.2M |
| Alberta Investment Management Corp | 0.07% | No change | 980,000 | $10.2M |
| Wolverine Asset Management LLC | 0.58% | Reduce -41.4% | 963,368 | $10.0M |
| Mizuho Securities USA LLC | 0.16% | Add +123.5% | 957,369 | $9.9M |
| Westchester Capital Management, LLC | 0.44% | Reduce -24.9% | 887,700 | $9.2M |
| Linden Advisors LP | 0.69% | No change | 875,000 | $9.1M |
| Two Sigma Investments, LP | 0.01% | Reduce -6.7% | 710,158 | $7.4M |
| Glazer Capital, LLC | 0.21% | Add +9.9% | 686,692 | $7.1M |
| Decagon Asset Management LLP | 2.91% | New | 657,592 | $6.8M |
| Karpus Management, Inc. | 0.20% | Reduce -7.5% | 620,220 | $6.5M |
| Meteora Capital, LLC | 0.52% | New | 579,318 | $6.0M |
| Rivernorth Capital Management, LLC | 0.25% | No change | 500,000 | $5.2M |
| LMR Partners LLP | 0.07% | Reduce -0.6% | 496,989 | $5.2M |
| CoinFund Management LLC | 8.31% | — | 461,000 | $4.8M |
| Goldman Sachs Group Inc. | 0.00% | Reduce -4.9% | 424,430 | $4.4M |
| J. Goldman & Co LP | 0.17% | New | 423,564 | $4.4M |
| Shaolin Capital Management LLC | 0.55% | New | 399,998 | $4.2M |
| Toronto Dominion Bank | 0.01% | Add +144.9% | 383,695 | $4.0M |
| Jain Global LLC | 0.04% | Reduce -24.9% | 375,250 | $3.9M |
| Berkley W R Corp. | 0.22% | Add +66.3% | 362,533 | $3.8M |
| Whitebox Advisors LLC | 0.19% | No change | 300,000 | $3.1M |
| Hudson Bay Capital Management LP | 0.02% | Reduce -62.8% | 260,429 | $2.7M |
| Periscope Capital Inc. | 0.53% | Reduce -41.1% | 250,000 | $2.6M |
| UBS Group AG | 0.00% | Add +1523.7% | 209,288 | $2.2M |
| Moore Capital Management, LP | 0.04% | No change | 200,000 | $2.1M |
| D. E. Shaw & Co. | 0.00% | Reduce -82.3% | 193,702 | $2.0M |
| Radcliffe Capital Management, L.P. | 0.28% | No change | 193,057 | $2.0M |
| Ghisallo Capital Management LLC | 0.09% | New | 200,000 | $2.0M |
| L1 Global Manager Pty Ltd | 1.16% | — | 170,000 | $1.8M |
| Millennium Management | 0.00% | Reduce -60.8% | 167,448 | $1.7M |
| Quarry LP | 0.27% | New | 150,000 | $1.6M |
| Aristeia Capital, L.L.C. | 0.08% | No change | 150,000 | $1.6M |
| Picton Mahoney Asset Management | 0.02% | Reduce -40.0% | 150,000 | $1.6M |
| OCONNOR, A Distinct Business Unit of UBS ASSET MANAGEMENT AMERICAS (LLC) | 0.04% | Reduce -40.0% | 149,912 | $1.6M |
| DLD Asset Management, LP | 0.45% | Add +24.8% | 124,750 | $1.3M |
| Feynman Point Asset Management LLC | 2.09% | — | 100,000 | $1.0M |
| Mint Tower Capital Management B.V. | 0.33% | No change | 100,000 | $1.0M |
| JPMorgan Chase & Co. | 0.00% | New | 49,873 | $519K |
| Deltec Asset Management LLC | 0.07% | Reduce -20.0% | 40,000 | $416K |
| Clear Street Group Inc. | 0.00% | Add +848.5% | 36,699 | $382K |
| Wellspring Financial Advisors, LLC | 0.03% | No change | 35,000 | $364K |
| Landscape Capital Management, L.L.C. | 0.01% | Reduce -53.0% | 20,371 | $212K |
| Hara Capital LLC | 0.01% | New | 1,250 | $13K |
| Morgan Stanley | 0.00% | Add +19.0% | 94 | $978 |
"% of holder's portfolio" is MLAC's weight in each manager's 13F, not the share of Mountain Lake Acquisition-A the manager owns.