13F Insight
DOSSIER · 13F Holders · Q4 2025

MOUNTAIN LAKE ACQUISITION CO

10 institutions still hold MOUNTAIN LAKE ACQUISITION CO as of Q4 2025. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP G6301B127·10 13F holders·last filed Dec 31, 2025
Market cap
—
13F value held
$776K
visible holders
Holders
10
filers reporting
Concentration
47.42%
AQR Arbitrage LLC #1
top holder share
AI Holders Summary · Q4 2025

10 institutions reported MOUNTAIN LAKE ACQUISITION CO in Q4 2025. AQR Arbitrage LLC leads at 47.4% of the visible book.

Top holders

Sorted by position value. Source: SEC EDGAR 13F-HR filings.

#HolderValueShares% port.Quarter
01
AQR Arbitrage LLC
CIK 0001167456
$368K1.5M0.01%Q4 202502
D. E. Shaw & Co., Inc.
CIK 0001009207
$174K725K0.00%Q4 202503
RIVERNORTH CAPITAL MANAGEMENT, LLC
CIK 0001447578
$130K500K0.01%Q1 202604
GLAZER CAPITAL, LLC
CIK 0001076809
$37K144K0.00%Q1 202605
Mint Tower Capital Management B.V.
CIK 0001666606
$26K100K0.00%Q1 202606
Decagon Asset Management LLP
CIK 0001950677
$18K70K0.00%Q1 202607
MIZUHO SECURITIES USA LLC
CIK 0001513006
$13K85K0.00%Q1 202508
READYSTATE ASSET MANAGEMENT LP
CIK 0001900923
$6K25K0.00%Q4 202509
ATW SPAC MANAGEMENT LLC
CIK 0001878495
$5K30K0.01%Q3 202510
CONCOURSE FINANCIAL GROUP SECURITIES, INC.
CIK 0000752798
$00—Q2 2025