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MLAC · Mountain Lake Acquisition Corp. · Holdings

Track MLAC — free
Market Cap
$96.70M
Shares
30.99M
Volume — Avg daily vol (3M) —
Mountain Lake Acquisition Corp. (MLAC) has not been listed on a US exchange since June 11, 2026. Its filings, calls and figures stay here as a record.

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.
Holders: 2
Total Value: $18,222,066
Total Shares: 1,735,102

Institutional Ownership Trend

7 quarters

Holder Concentration

Across 2 13F filers · Δ vs Mar 31, 2026
Top Holder
98.5%
Dec 2024 → Jun 2026 · range 8.9% – 98.5%
+89.7 pts
Top 5
100.0%
Dec 2024 → Jun 2026 · range 38.4% – 100.0%
+59.9 pts
Top 10
100.0%
Dec 2024 → Jun 2026 · range 60.0% – 100.0%
+36.4 pts
HHI
9,713
Dec 2024 → Jun 2026 · range 479 – 9,713
Highly concentrated+9,209

Who Holds MLAC

Last 7 quarters through Jun 30, 2026

Each kind of 13F filer's share of the common shares 13F filers report. Holder type comes from regulatory records, never the filer's name; style, turnover and horizon are measured from each filer's own 13F book. The quarter selector does not change this card.

Jun 30, 2026: 2 filers, like-for-like change -96.0%; actively managed books -96.0%; index-like books -100.0%.

Holder type Share Filers Change
Registered adviser 0.0% 0 -100.0%
Exempt adviser 0.0% 0 -100.0%
Adviser 1.4% 1 -98.8%
Bank 0.0% 0 -100.0%
Insurer 0.0% 0 -100.0%
Broker-dealer 0.0% 0 -100.0%
Non-US 0.0% 0 -100.0%
Holding company 0.0% 0 -100.0%
Unknown 98.6% 1 -58.8%
How the mix is measured

Shares are 13F common shares restated to today's split basis; options and principal amounts are left out. The change compares only filers with a 13F in both quarters and keeps each filer in its bucket of the later quarter on both sides; a filer that continues under a new CIK is compared through its successor. Holder type comes from each filer's current regulatory profile; client base and private funds come from the Form ADV roster current at each quarter end (rosters from December 2019, so an earlier quarter reads Unknown). Style, turnover, horizon and book size are measured from each filer's 13F book in the newest measured quarter, and Not measured means none was. Actively managed books are those measured systematic-like, concentrated or diversified active.

Excluded 1 holder with no observed 2026-06-30 13F.

Conviction and Crowding

2 13F filers, quarter ended Jun 30, 2026

Measured across every 13F filer's common-share book once the quarter's filing window closed. Crowding counts filers with high turnover or that advise private funds on Form ADV.

Conviction holders
0
0.000% of filers hold it in their top 10
Mar 31, 2026: 2
Holders above 5%
0
median weight 0.165%
Mar 31, 2026: 1
Crowding
—
the issuer has more than one class of common stock, so its count is the total across classes
Private-fund advisers
—
of shares outstanding
Institutional ownership
—
the issuer has more than one class of common stock, so its count is the total across classes
Top 10 holders
100.0%
of 13F shares, Herfindahl 0.972
Active holders
-92.1%
like-for-like share change of active filers
5% stakes on record
1
0 13D, 1 13G (1 institutional, 0 passive, 0 exempt)
How long holders have held it value-weighted 5.0 quarters
Under 1 year 1.46% 1 to 3 years 98.5% 3 years or more 0.000% Since coverage start 0.000%

Managers in the top fifth by current three-year FundScore alpha were net buyers of $0 (0 buying, 0 selling).

Shared Holders

Companies MLAC's active holders also own, quarter ended Mar 31, 2026
# Company Shared holders
1 POLE Andretti Acquisition Corp. II 14
2 LEGT Legato Merger Corp. III 12
3 SIMA SIM Acquisition Corp. I 14
4 SOUL Soulpower Acquisition Corp. 14
5 ALDF Aldel Financial II Inc. 12
6 SBXDF SilverBox Corp IV 10
7 KFII K&F Growth Acquisition Corp. II 13
8 CUB Lionheart Holdings 11
9 ATII Archimedes Tech SPAC Partners II Co. 11
10 AACB Artius II Acquisition Inc. 12

Shareholder Targets

13F filers that own its peers but not MLAC, quarter ended Mar 31, 2026

Found through its holder-overlap peers: POLE, LEGT, SIMA, SOUL, ALDF, SBXDF, KFII, CUB, ATII, AACB, ALF, NPAC, KCHV, MLAA, XRPNU, GPAT, IPEX, TAVI, TMS, OYSE. 91 filers in all.

# Filer In peers
1 MMCAP International Inc. SPC Unknown, Diversified active $97,033,683 11 held
2 TWO SIGMA INVESTMENTS, LP Registered adviser, Systematic-like $90,207,779 16 held
3 Arrington Capital Management, LLC Registered adviser, Concentrated $59,840,746 1 held
4 HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND Non-US, Diversified active $38,194,596 11 held
5 RiverPark Advisors, LLC Registered adviser, Diversified active $37,641,653 6 held
6 HIGHBRIDGE CAPITAL MANAGEMENT LLC Registered adviser, Diversified active $33,236,964 14 held
7 Sculptor Capital LP Registered adviser, Diversified active $28,295,450 6 held
8 SONA ASSET MANAGEMENT (US) LLC Registered adviser, Diversified active $27,635,751 12 held
9 COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS Unknown, Diversified active $27,273,681 10 held
10 Governors Lane LP Registered adviser, Diversified active $25,070,518 5 held

Fund Ownership of MLAC by Fund Type

Registered funds' Form N-PORT reports for the quarter ended Jun 30, 2026

Index funds and index ETFs hold 0.00% of shares outstanding.

Fund type Of shares outstanding Shares
Index funds 0.00% 0
Index ETFs 0.00% 0
Active ETFs 0.00% 0
Active funds 0.15% 44,930
Unclassified 0.00% 0
All registered funds 0.15% 44,930
How fund types are measured

Each fund series counts once, with its latest Form N-PORT report dated inside the quarter; only long share positions count, restated to today's split basis. The fund type is the series' latest Form N-CEN answer on or before the quarter end (the index-fund box and the exchange-traded flag), never its name. Unclassified funds have no usable N-CEN; unit investment trusts are among them, so index ownership is a floor. Funds sit inside their advisers' 13F reports, so these shares overlap the 13F figures and are never added to them.

Quarterly Activity

vs Mar 31, 2026
New
0
Increased
0
Decreased
1
Sold Out
60
Unchanged
1

New and Sold Out count only filers that reported a 13F for both quarters: a first-time filer's book is not a buy, and a fund that has not filed, or withheld its positions under confidential treatment, has not sold.

Holder count: -61
Institutional value: -92.4%
Shares held: -96.1%

Top Buyers

vs Mar 31, 2026
No qualifying movers this quarter.

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open

Top New Positions

vs Mar 31, 2026
No new positions this quarter.

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
Showing 2 of 2
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Holder Value (USD) % of 13F Shares Open
Key facts CIK 2029492 CUSIP G6301B101