Latest Period
Q2 2026
Security Snapshot
Mountain Lake Acquisition Corp. II - Class A ordinary shares, par value $0.0001 (MLAA) Institutional Ownership
CUSIP: G6301L109
13F Institutional Holders and Ownership History from Q1 2026 to Q2 2026
Institutions Reporting
58
Shares (Excl. Options)
32,357,211
Price
$9.93
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- Security type / class
- Equity / Class A ordinary shares, par value $0.0001
- Symbol
- MLAA on Nasdaq
- All holders as of 30 Jun 2026
- Q2 2026
- Total 13F shares
- 32,357,211
- Total 13F value
- $321,336,590
- Portfolio coverage rank
- 0%
- Share change
- +14,963,091
- Value change
- +$148,724,666
- Number of holders
- 58
- Shares outstanding
- 37,037,037
- SEC-reported price per share
- $9.96
Latest holder snapshot
5 signals
Issuer context
Names, identifiers, and filing context for this profile.
2 identity fields
13F Shares, Excluding Options vs Price
13F Value, Excluding Options
Total Investors
Key facts
- MLAA - Mountain Lake Acquisition Corp. II - Class A ordinary shares, par value $0.0001 is tracked under CUSIP G6301L109.
- 58 institutions reported positions in Q2 2026.
- 3 significant owners is listed from Schedule 13D/13G reporting.
Change
- Holder count moved from 31 to 58 between Q1 2026 and Q2 2026.
- SEC-reported value moved from $166,363,744 to $321,336,590.
Research use
- You can quickly see who holds this security, then open quarter and manager detail pages for full evidence.
- 13F and Schedule 13D/13G sections are kept together so you can cross-check institutional and beneficial ownership context.
Evidence
Source: SEC Form 13F
Open SEC evidence
Latest holder context comes from 58 institutions filings for Q2 2026.
Security key
G6301L109
Latest holder period
Q2 2026
13F holders
58
13D/G owners
3
CIK / CUSIP context first
Open Q2 2026 holders
MLAA full holder history
Mountain Lake Acquisition Corp. II SEC filings
Mountain Lake Acquisition Corp. II company facts
Mountain Lake Acquisition Corp. II insider transactions
Broader feeds
Recent Quarterly Holder Reports
Open recent reporting periods for CUSIP G6301L109:
13D/G owners
Significant owners
Large-stake holder rows connected to Schedule 13D/G evidence.
Rows
3
Security
MLAA
| Filer | Ownership | Change % | Holdings Value | Net Change | Nb Shares | Change % | Reporting Name | Report Period |
|---|---|---|---|---|---|---|---|---|
| MOUNTAIN LAKE ACQUISITION SPONSOR II LLC | 26% | 12,516,000 | Mountain Lake Acquisition Sponsor II LLC | 28 Jan 2026 | ||||
| Adage Capital Management, L.P. | 5.7% | $20,727,000 | 2,100,000 | Adage Capital Management, L.P. | 31 Mar 2026 | |||
| Magnetar Financial LLC | 5.4% | $19,740,000 | 2,000,000 | MAGNETAR FINANCIAL LLC | 31 Mar 2026 |
As of 30 Jun 2026, 58 institutional investors reported holding 32,357,211 shares of Mountain Lake Acquisition Corp. II - Class A ordinary shares, par value $0.0001 (MLAA). This represents 87% of the company’s total 37,037,037 outstanding shares.
13F concentration
Top 25 institutional shareholders
Largest 13F positions for this security by reported shares and value.
Top holder share
72%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| ARISTEIA CAPITAL, L.L.C. | 5.9% | 2,189,405 | 0.34% | $21,740,792 | |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 5.7% | 2,100,000 | 0% | 0.03% | $20,853,000 |
| Magnetar Financial LLC | 5.4% | 2,000,000 | 0% | 0.18% | $19,860,000 |
| Alberta Investment Management Corp | 4.7% | 1,750,000 | 0.1% | $17,377,500 | |
| Linden Advisors LP | 4.1% | 1,500,000 | 0% | 0.08% | $14,895,000 |
| AQR Arbitrage LLC | 3.9% | 1,449,082 | 0.2% | $14,389,384 | |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | 3.5% | 1,309,459 | +373% | 0.44% | $13,016,022 |
| Kryger Capital LLC | 3.4% | 1,270,887 | 0.72% | $12,619,908 | |
| LMR Partners LLP | 3.4% | 1,250,000 | 0.09% | $12,412,500 | |
| D. E. Shaw & Co., Inc. | 2.9% | 1,080,000 | +232% | 0.01% | $10,724,400 |
| TENOR CAPITAL MANAGEMENT Co., L.P. | 2.9% | 1,059,588 | 0% | 0.15% | $10,521,709 |
| Fort Baker Capital Management LP | 2.7% | 1,000,000 | 0.79% | $9,930,000 | |
| SONA ASSET MANAGEMENT (US) LLC | 2.7% | 1,000,000 | 0% | 0.37% | $9,930,000 |
| GLAZER CAPITAL, LLC | 2.6% | 950,000 | -2.2% | 0.23% | $9,434,000 |
| Westchester Capital Management, LLC | 2.3% | 853,517 | 0.43% | $8,475,423 | |
| Polar Asset Management Partners Inc. | 2.2% | 800,000 | -20% | 0.15% | $7,944,000 |
| MILLENNIUM MANAGEMENT LLC | 2.1% | 765,000 | 0.01% | $7,596,450 | |
| BNP PARIBAS FINANCIAL MARKETS | 2% | 742,958 | 0% | 0% | $7,377,573 |
| First Trust Capital Management L.P. | 1.6% | 600,000 | 0.35% | $5,958,000 | |
| Verition Fund Management LLC | 1.6% | 587,590 | -35% | 0.04% | $5,834,769 |
| TWO SIGMA INVESTMENTS, LP | 1.5% | 567,675 | 0% | 0% | $5,637,013 |
| MMCAP International Inc. SPC | 1.4% | 500,000 | 0.42% | $4,965,000 | |
| MOORE CAPITAL MANAGEMENT, LP | 1.4% | 500,000 | 0.11% | $4,965,000 | |
| PICTON MAHONEY ASSET MANAGEMENT | 1.4% | 500,000 | 0.05% | $4,965,001 | |
| RIVERNORTH CAPITAL MANAGEMENT, LLC | 1.3% | 499,531 | 0.24% | $4,980,324 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
2
Latest
Q2 2026
Rows shown
1-2 of 2