Latest Period
Q1 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 for Q1 2026
Institutions Reporting
31
Shares (Excl. Options)
16,901,162
Price
$9.84
Save this security page for your next review
Keep this CUSIP in your watchlists so you can revisit quarter changes from one place. If you create an account from here, we will bring you back after verification.
- Type / Class
- Equity / Class A ordinary shares, par value $0.0001
- Symbol
- MLAA on Nasdaq
- Shares outstanding
- 37,037,037
- Price per share
- $9.87
- All holders as of 31 Mar 2026
- Q1 2026
- Total 13F shares
- 16,901,162
- Total reported value
- $166,363,744
- % of total 13F portfolios
- 0%
- Share change
- +16,801,162
- Value change
- +$165,379,744
- Number of holders
- 31
Reported Shares, Excluding Options vs Price
Reported 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.
- 31 institutions reported positions in Q1 2026.
- 3 significant owners is listed from Schedule 13D/13G reporting.
Change
- Latest quarter on this page is Q1 2026.
- Additional quarter-over-quarter change detail appears as history expands.
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 31 institutions filings for Q1 2026.
Security key
G6301L109
Latest holder period
Q1 2026
13F holders
31
13D/G owners
3
CIK / CUSIP context first
Open Q1 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 31 Mar 2026, 31 institutional investors reported holding 16,901,162 shares of Mountain Lake Acquisition Corp. II - Class A ordinary shares, par value $0.0001 (MLAA). This represents 46% 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
45%
| Institution | Ownership % | Shares Held | Share Change % | Portfolio % | Holdings Value |
|---|---|---|---|---|---|
| ADAGE CAPITAL PARTNERS GP, L.L.C. | 5.7% | 2,100,000 | 0.03% | $20,674,500 | |
| Magnetar Financial LLC | 5.4% | 2,000,000 | 0.2% | $19,670,000 | |
| Linden Advisors LP | 4.1% | 1,500,000 | 0.08% | $14,775,000 | |
| HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND | 3.4% | 1,250,000 | 0.02% | $12,312,500 | |
| TENOR CAPITAL MANAGEMENT Co., L.P. | 2.9% | 1,059,588 | 0.16% | $10,431,644 | |
| SONA ASSET MANAGEMENT (US) LLC | 2.7% | 1,000,000 | 0.38% | $9,845,000 | |
| Polar Asset Management Partners Inc. | 2.7% | 1,000,000 | 0.23% | $9,845,000 | |
| GLAZER CAPITAL, LLC | 2.6% | 971,419 | 0.2% | $9,549,000 | |
| Verition Fund Management LLC | 2.4% | 900,000 | 0.09% | $8,865,000 | |
| Shaolin Capital Management LLC | 2% | 737,300 | 0.6% | $7,258,719 | |
| TWO SIGMA INVESTMENTS, LP | 1.5% | 567,675 | 0% | $5,580,245 | |
| Periscope Capital Inc. | 1.4% | 500,000 | 0.86% | $4,920,000 | |
| BERKLEY W R CORP | 1.2% | 447,794 | 0.24% | $4,406,293 | |
| Radcliffe Capital Management, L.P. | 1.1% | 403,982 | 0.3% | $3,975,183 | |
| WHITEBOX ADVISORS LLC | 1.1% | 400,000 | 0.06% | $3,938,000 | |
| Ghisallo Capital Management LLC | 1% | 375,000 | 0.1% | $3,693,750 | |
| D. E. Shaw & Co., Inc. | 0.88% | 325,001 | 0% | $3,201,260 | |
| HIGHBRIDGE CAPITAL MANAGEMENT LLC | 0.75% | 277,003 | 0.17% | $2,727,095 | |
| Mint Tower Capital Management B.V. | 0.68% | 250,000 | 0.23% | $2,461,000 | |
| CSS LLC/IL | 0.51% | 190,236 | 0.11% | $1,872,873 | |
| Clear Street Group Inc. | 0.37% | 136,354 | 0.01% | $1,342,405 | |
| Hudson Bay Capital Management LP | 0.27% | 100,000 | 0.01% | $985,000 | |
| Galaxy Digital Inc. | 0.27% | 100,000 | 0% | 0.15% | $984,000 |
| DLD Asset Management, LP | 0.27% | 100,000 | 0.1% | $984,500 | |
| Virtu Financial LLC | 0.22% | 79,870 | 0.03% | $787,000 |
Quarter history
Institutional holders across reporting periods
Holder count, reported shares/value, and median price by quarter.
Periods
1
Latest
Q1 2026
| Period | Reported Shares, Excl. Options | Value, Excl. Options | Value Change | Price (Median) | Investors |
|---|---|---|---|---|---|
| 2026 Q1 | 16,901,162 | $166,363,744 | +$165,379,744 | $9.84 | 31 |