Mountain Lake AcquisitionMLACRPreferred / convertible

13F holders, Q3 2025 (September 30)
40holders +1
4new positions
3sold out
2famous investors
$0.17avg. 13F price*

At the end of Q3 2025, 40 institutions reported holding Mountain Lake Acquisition Co. (MLACR) in their 13F filings, up 1 from Q2 2025. 4 opened new positions and 3 sold out. The largest holders were Harraden Circle Investments, LLC ($458K), AQR Arbitrage LLC ($396K) and Magnetar Financial LLC ($380K). 2 famous investors held it, including David E. Shaw ( of D. E. Shaw & Co.'s portfolio) and Israel Englander ( of Millennium Management's portfolio).

Company
Mountain Lake Acquisition Co.
CUSIP
G6301B127
Latest filing quarter
Q1 2026

History

Number of 13F holders

01020304050 Q1 2025: 30Q1 2025Q2 2025: 39Q2 2025Q3 2025: 40Q3 2025Q4 2025: 42Q4 2025Q1 2026: 40Q1 2026

Total Exit/New Position Q2 2025 → Q3 2025

InstitutionsTotal Value
New Positions4$94K
Exits3$347K

All 13F filers, Q2 2025 → Q3 2025: 704,638 shares bought and 820,595 shares sold, net −115,957 shares. Counts holders who added, trimmed, opened or closed a position; split-adjusted.

Ownership 40 holders
Harraden Circle Investments, LLC — Add +2.9% 3,049,749 $458K
AQR Arbitrage LLC — No change 1,980,000 $396K
Magnetar Financial LLC — No change 1,900,000 $380K
Polar Asset Management Partners Inc. — No change 1,880,000 $282K
Linden Advisors LP — No change 1,175,000 $217K
Verition Fund Management LLC — No change 995,333 $199K
Westchester Capital Management, LLC — No change 805,100 $161K
Alberta Investment Management Corp — No change 980,000 $147K
D. E. Shaw & Co. — No change 725,000 $145K
HGC Investment Management Inc. — No change 700,000 $105K
Shaolin Capital Management LLC — No change 650,000 $98K
Hudson Bay Capital Management LP — No change 400,000 $80K
Wolverine Asset Management LLC — Reduce -9.6% 519,833 $78K
TENOR CAPITAL MANAGEMENT Co., L.P. — No change 500,000 $75K
Rivernorth Capital Management, LLC — New 500,000 $75K
LMR Partners LLP — No change 500,000 $75K
Millennium Management — No change 450,000 $68K
Toronto Dominion Bank — Reduce -9.6% 449,800 $67K
Periscope Capital Inc. — No change 424,739 $64K
K2 Principal Fund, L.P. — Reduce -0.5% 364,949 $55K
Alpine Global Management, LLC — No change 300,034 $45K
Whitebox Advisors LLC — No change 300,000 $45K
CSS LLC — Reduce -90.0% 27,500 $41K
Picton Mahoney Asset Management — No change 250,000 $39K
Clear Street Group Inc. — — 228,376 $34K
Parallax Volatility Advisers, L.P. — Reduce -32.7% 200,000 $30K
Moore Capital Management, LP — No change 200,000 $30K
Gritstone Asset Management LLC — Reduce -1.4% 166,866 $25K
Wealthspring Capital LLC — Reduce -0.3% 150,570 $23K
Glazer Capital, LLC — Reduce -30.4% 143,986 $22K
Schonfeld Strategic Advisors LLC — Reduce -14.2% 130,000 $20K
Decagon Asset Management LLP — No change 128,390 $19K
Mint Tower Capital Management B.V. — No change 100,000 $15K
Quarry LP — New 97,400 $15K
Commonwealth of Pennsylvania Public School Empls Retrmt SYS — No change 67,600 $10K
Centiva Capital, LP — No change 25,100 $5K
Boothbay Fund Management, LLC — No change 30,000 $5K
Atw Spac Management LLC — No change 30,000 $5K
Susquehanna International Group, LLP — New 14,699 $3K
Bank of America Corp. — New 7,842 $1K

"% of holder's portfolio" is MLACR's weight in each manager's 13F, not the share of Mountain Lake Acquisition Co. the manager owns.