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 MLAA from SEC Form 13F filings across 58 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, 58 institutions disclosed 32.5M shares of Mountain Lake Acquisition Corp. II worth $322.6M — about 124.7% of shares outstanding; the largest disclosed holder is ARISTEIA CAPITAL, L.L.C.. Source: SEC Form 13F filings, parsed by EvidInvest.
58
13F holders
$322.6M
value, 2026 filers
124.7%
of shares outstanding (32.5M sh)
31
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 MLAA's shares outstanding
| # | Manager | Shares | Value | % of fund | % of co. | Δ shares QoQ |
|---|---|---|---|---|---|---|
| 1 | ARISTEIA CAPITAL, L.L.C.NEW | 2.2M | $21.7M | 0.3% | 8.4% | new |
| 2 | ADAGE CAPITAL PARTNERS GP, L.L.C. | 2.1M | $20.9M | 0.0% | 8.1% | 0.0% |
| 3 | Magnetar Financial LLC | 2.0M | $19.9M | 0.2% | 7.7% | 0.0% |
| 4 | Alberta Investment Management CorpNEW | 1.8M | $17.4M | 0.1% | 6.7% | new |
| 5 | Linden Advisors LP | 1.5M | $14.9M | 0.1% | 5.8% | 0.0% |
| 6 | AQR Arbitrage LLCNEW | 1.4M | $14.4M | 0.2% | 5.6% | new |
| 7 | HIGHBRIDGE CAPITAL MANAGEMENT LLC | 1.3M | $13.0M | 0.3% | 5% | +372.7% |
| 8 | Kryger Capital LLCNEW | 1.3M | $12.6M | 0.7% | 4.9% | new |
| 9 | LMR Partners LLPNEW | 1.3M | $12.4M | 0.0% | 4.8% | new |
| 10 | D. E. Shaw & Co., Inc. | 1.1M | $10.7M | 0.0% | 4.1% | +232.3% |
| 11 | TENOR CAPITAL MANAGEMENT Co., L.P. | 1.1M | $10.5M | 0.1% | 4.1% | 0.0% |
| 12 | Fort Baker Capital Management LPNEW | 1.0M | $9.9M | 0.7% | 3.8% | new |
| 13 | SONA ASSET MANAGEMENT (US) LLC | 1.0M | $9.9M | 0.2% | 3.8% | 0.0% |
| 14 | GLAZER CAPITAL, LLC | 950,000 | $9.4M | 0.2% | 3.6% | -2.2% |
| 15 | Westchester Capital Management, LLCNEW | 853,517 | $8.5M | 0.4% | 3.3% | new |
| 16 | Polar Asset Management Partners Inc. | 800,000 | $7.9M | 0.1% | 3.1% | -20.0% |
| 17 | MILLENNIUM MANAGEMENT LLCNEW | 765,000 | $7.6M | 0.0% | 2.9% | new |
| 18 | BNP PARIBAS FINANCIAL MARKETSNEW | 742,958 | $7.4M | 0.0% | 2.9% | new |
| 19 | First Trust Capital Management L.P.NEW | 600,000 | $6.0M | 0.3% | 2.3% | new |
| 20 | Verition Fund Management LLC | 587,590 | $5.8M | 0.0% | 2.3% | -34.7% |
| 21 | TWO SIGMA INVESTMENTS, LP | 567,675 | $5.6M | 0.0% | 2.2% | 0.0% |
| 22 | PICTON MAHONEY ASSET MANAGEMENTNEW | 500,000 | $5.0M | 0.0% | 1.9% | new |
| 23 | MOORE CAPITAL MANAGEMENT, LPNEW | 500,000 | $5.0M | 0.1% | 1.9% | new |
| 24 | MMCAP International Inc. SPCNEW | 500,000 | $5.0M | 0.4% | 1.9% | new |
| 25 | RIVERNORTH CAPITAL MANAGEMENT, LLCNEW | 499,531 | $5.0M | 0.2% | 1.9% | new |
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 · options positioning · supply chain. Research, not investment advice.