Who owns Mountain Lake Acquisition Corp. II?
Prices and market caps: Cboe delayed data, at least 15 minutes delayed. Not real-time. Fundamentals from company filings.
Institutional ownership of MLAAW from SEC Form 13F filings across 50 reporting managers. All positions are from one synchronized reporting period — 2026-06-30 books, filed up to 45 days after quarter end — so every row is comparable.
As of the 2026-06-30 reporting period, 50 institutions disclosed 14.3M shares of Mountain Lake Acquisition Corp. II worth $4.8M — about 137% of shares outstanding; the largest disclosed holder is ARISTEIA CAPITAL, L.L.C.. Source: SEC Form 13F filings, parsed by EvidInvest.
50
13F holders
$4.8M
value, 2026 filers
137%
of shares outstanding (14.3M sh)
30
new positions (2026 filers)
Top institutional holders
ordered by shares owned · positions as of 2026-06-30 · % of fund = share of the manager's own book · % of co. = share of MLAAW's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | ARISTEIA CAPITAL, L.L.C.NEW | 1.1M | $311,333 | 0.0% | 10.5% | new |
| 2 | Alberta Investment Management CorpNEW | 875,000 | $236,338 | 0.0% | 8.4% | new |
| 3 | Magnetar Financial LLC | 775,000 | $220,410 | 0.0% | 7.4% | -22.5% |
| 4 | Linden Advisors LP | 749,999 | $213,300 | 0.0% | 7.2% | 0.0% |
| 5 | AQR Arbitrage LLCNEW | 724,541 | $188,381 | 0.0% | 6.9% | new |
| 6 | ADAGE CAPITAL PARTNERS GP, L.L.C. | 700,000 | $189,070 | 0.0% | 6.7% | -33.3% |
| 7 | Lineage Point Capital LPNEW | 648,472 | $175,152 | 0.0% | 6.2% | new |
| 8 | LMR Partners LLPNEW | 625,000 | $168,813 | 0.0% | 6% | new |
| 9 | HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 625,000 | $168,750 | 0.0% | 6% | 0.0% |
| 10 | Verition Fund Management LLC | 556,584 | $150,333 | 0.0% | 5.3% | -27.0% |
| 11 | TENOR CAPITAL MANAGEMENT Co., L.P. | 529,794 | $143,097 | 0.0% | 5.1% | 0.0% |
| 12 | HIGHBRIDGE CAPITAL MANAGEMENT LLCNEW | 521,729 | $135,650 | 0.0% | 5% | new |
| 13 | Polar Asset Management Partners Inc. | 500,000 | $135,050 | 0.0% | 4.8% | 0.0% |
| 14 | SONA ASSET MANAGEMENT (US) LLC | 500,000 | $135,050 | 0.0% | 4.8% | 0.0% |
| 15 | BNP PARIBAS FINANCIAL MARKETSNEW | 371,479 | $100,336 | 0.0% | 3.6% | new |
| 16 | GLAZER CAPITAL, LLC | 350,000 | $95,000 | 0.0% | 3.4% | -27.9% |
| 17 | Westchester Capital Management, LLCNEW | 307,261 | $82,960 | 0.0% | 2.9% | new |
| 18 | Radcliffe Capital Management, L.P. | 251,890 | $71,638 | 0.0% | 2.4% | 0.0% |
| 19 | PICTON MAHONEY ASSET MANAGEMENTNEW | 250,000 | $65,000 | 0.0% | 2.4% | new |
| 20 | MOORE CAPITAL MANAGEMENT, LPNEW | 250,000 | $67,525 | 0.0% | 2.4% | new |
| 21 | MMCAP International Inc. SPCNEW | 250,000 | $67,525 | 0.0% | 2.4% | new |
| 22 | RIVERNORTH CAPITAL MANAGEMENT, LLCNEW | 250,000 | $70,000 | 0.0% | 2.4% | new |
| 23 | Shaolin Capital Management LLC | 218,649 | $59,057 | 0.0% | 2.1% | -40.7% |
| 24 | Periscope Capital Inc. | 212,500 | $57,396 | 0.0% | 2% | -15.0% |
| 25 | WHITEBOX ADVISORS LLC | 200,000 | $54,020 | 0.0% | 1.9% | 0.0% |
Source: SEC Form 13F-HR filings (institutional managers over $100M in US-listed positions). 13Fs disclose long positions only, up to 45 days after quarter end; each manager's latest filed quarter is shown per row and dollar values are the manager's filed marks. Aggregates labeled "2026 filers" count only managers whose latest book is a 2026 quarter. Related: valuation. Research, not investment advice.