MOUNTAIN LAKE ACQUISITION CO (MLACR)
Institutional ownership reported to the SEC as of Q1 2026, across 5 quarters.
39
Reporting holders
$5.3M
Reported value
0.0%
Calls
0.0%
Puts
-2
Holder change
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| Harraden Circle Investments, LLC | $864.6K | 3,325,566 | 0.17% | 5q | HELD |
| Magnetar Financial LLC | $494.0K | 1,900,000 | 0.01% | 4q | HELD |
| Polar Asset Management Partners Inc. | $488.8K | 1,880,000 | 0.01% | 5q | HELD |
| AQR Arbitrage LLC | $388.9K | 1,495,890 | 0.01% | 5q | -2.5%-$9.9K |
| Alberta Investment Management Corp | $254.8K | 980,000 | 0.00% | 4q | HELD |
| Linden Advisors LP | $246.9K | 1,175,000 | 0.00% | 5q | HELD |
| METEORA CAPITAL, LLC | $215.0K | 826,755 | 0.02% | 2q | -18.5%-$48.8K |
| TORONTO DOMINION BANK | $193.4K | 743,723 | 0.00% | 4q | -1.7%-$3.4K |
| Verition Fund Management LLC | $189.2K | 727,509 | 0.00% | 5q | HELD |
| D. E. Shaw & Co., Inc. | $188.5K | 725,000 | 0.00% | 5q | HELD |
| Westchester Capital Management, LLC | $182.0K | 700,013 | 0.01% | 4q | HELD |
| TENOR CAPITAL MANAGEMENT Co., L.P. | $130.0K | 500,000 | 0.00% | 5q | HELD |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | $130.0K | 500,000 | 0.01% | 3q | HELD |
| LMR Partners LLP | $130.0K | 500,000 | 0.00% | 5q | HELD |
| Shaolin Capital Management LLC | $124.7K | 479,500 | 0.00% | 5q | HELD |
| MILLENNIUM MANAGEMENT LLC | $117.0K | 450,000 | 0.00% | 4q | HELD |
| BNP PARIBAS FINANCIAL MARKETS | $116.0K | 446,094 | 0.00% | 2q | HELD |
| CSS LLC/IL | $91.1K | 35,056? | 0.00% | 5q | |
| WOLVERINE ASSET MANAGEMENT LLC | $86.7K | 333,554 | 0.00% | 4q | -8.5%-$8.0K |
| DLD Asset Management, LP | $84.5K | 325,000 | 0.01% | 2q | HELD |
| Periscope Capital Inc. | $83.5K | 321,184 | 0.01% | 5q | -1.2% |
| WHITEBOX ADVISORS LLC | $78.0K | 300,000 | 0.00% | 5q | HELD |
| Hudson Bay Capital Management LP | $77.9K | 299,715 | 0.00% | 5q | -14.4%-$13.1K |
| Saba Capital Management, L.P. | $73.5K | 350,017 | 0.00% | 2q | HELD |
| Clear Street Group Inc. | $55.3K | 212,579 | 0.00% | 3q | HELD |
| MOORE CAPITAL MANAGEMENT, LP | $52.0K | 200,000 | 0.00% | 4q | HELD |
| Wealthspring Capital LLC | $39.1K | 150,370 | 0.01% | 4q | HELD |
| GLAZER CAPITAL, LLC | $37.0K | 143,986 | 0.00% | 5q | HELD |
| K2 PRINCIPAL FUND, L.P. | $29.5K | 113,489 | 0.00% | 5q | -23.1%-$8.8K |
| PICTON MAHONEY ASSET MANAGEMENT | $26.0K | 100,000 | 0.00% | 5q | HELD |
| Mint Tower Capital Management B.V. | $26.0K | 100,000 | 0.00% | 5q | HELD |
| RLH Capital LLC | $26.0K | 100,000 | 0.01% | new | FIRST |
| Schonfeld Strategic Advisors LLC | $23.2K | 89,254 | 0.00% | 5q | -23.0%-$6.9K |
| Decagon Asset Management LLP | $18.1K | 69,665 | 0.00% | 5q | HELD |
| BOOTHBAY FUND MANAGEMENT, LLC | $17.6K | 67,840 | 0.00% | 5q | -6.7%-$1.3K |
| Parallax Volatility Advisers, L.P. | $17.0K | 77,140 | 0.00% | 4q | -19.1%-$4.0K |
| Quarry LP | $13.0K | 50,000 | 0.00% | 3q | HELD |
| HGC Investment Management Inc. | $10.4K | 40,000 | 0.00% | 5q | HELD |
| READYSTATE ASSET MANAGEMENT LP | $6.4K | 24,779 | 0.00% | 2q | HELD |
| TWO SIGMA SECURITIES, LLC | $2.6K | 10,183 | 0.00% | new | NEW |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q1 2026 | 39 | $5.3M | 20,833,805 | 1 | 0 | 10 | 0.0% |
| Q4 2025 | 41 | $5.1M | 21,191,677 | 7 | 4 | 16 | 0.0% |
| Q3 2025 | 40 | $3.7M | 21,547,866 | 4 | 1 | 7 | 0.0% |
| Q2 2025 | 38 | $3.6M | 21,633,823 | 10 | 6 | 3 | 0.0% |
| Q1 2025 | 30 | $3.7M | 15,572,757 | 30 | 0 | 0 | 1.6% |