DOSSIER · 13F Holders · Q2 2026

MOUNTAIN LAKE ACQUISIT CORP

9 institutions still hold MOUNTAIN LAKE ACQUISIT CORP as of Q2 2026. Tracked across SEC 13F-HR filings, with insider and 13D/G activity surfaced alongside.

CUSIP G6301L125·9 13F holders·last filed Jun 30, 2026
Market cap
—
13F value held
$28M
visible holders
Holders
9
filers reporting
Concentration
28.67%
Calamos Advisors LLC #1
top holder share
AI Holders Summary · Q2 2026

9 institutions reported MOUNTAIN LAKE ACQUISIT CORP in Q2 2026. Calamos Advisors LLC leads at 28.7% of the visible book.

Top holders

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

#HolderValueShares% port.Quarter
01
Calamos Advisors LLC
CIK 0001316507
$8M783K0.03%Q2 2026
02
OMERS ADMINISTRATION Corp
CIK 0001053321
$6M626K0.04%Q2 2026
03
RIVERNORTH CAPITAL MANAGEMENT, LLC
CIK 0001447578
$5M500K0.25%Q1 2026
04
TUDOR INVESTMENT CORP ET AL
CIK 0000923093
$3M300K0.01%Q1 2026
05
Qube Research & Technologies Ltd
CIK 0001729829
$3M250K0.00%Q2 2026
06
TORONTO DOMINION BANK
CIK 0000947263
$2M166K0.00%Q2 2026
07
Clear Street Group Inc.
CIK 0001881567
$1M118K0.00%Q2 2026
08
LONGFELLOW INVESTMENT MANAGEMENT CO LLC
CIK 0001167487
$84K8K0.02%Q2 2026
09
UBS Group AG
CIK 0001610520
$2K2400.00%Q2 2026