Mountain Lake Acquisition Corp. II

MLAA

Exchange: Nasdaq
Industry: Blank Checks
SEC CIK: 0002094265

SEC filings (opens in a new tab)

No open-market purchases or sales by Mountain Lake Acquisition Corp. II insiders were filed in the last 90 days; 59 institutions reported holding it in 13F filings for Q2 2026, worth $323.8M in total; no superinvestor holds it.

Other share classesMLAAU MLAAW

Q1 2026 vs. Q4 2025

How the institutions holding Mountain Lake Acquisition Corp. II changed between Q4 2025 and Q1 2026.

All holders in Q1 2026 All holders in Q4 2025

13F holders of MLAA: Q4 2025 compared with Q1 2026
Measure	Q4 2025	Q1 2026	Change
Holders	0	31	+31
Shares	0	16.9M	+16.9M
Value	$0	$166.4M	+$166.4M

New holders (31)

Institutions that held Mountain Lake Acquisition Corp. II at the end of Q1 2026 but not at the end of Q4 2025.

Institutions new to MLAA in Q1 2026
Institution	Shares	Value	% of portfolio
Adage Capital Partners GP, L.L.C.	2,100,000	$20.7M	0.03%
Magnetar Financial LLC	2,000,000	$19.7M	0.20%
Linden Advisors LP	1,500,000	$14.8M	0.08%
Healthcare of Ontario Pension Plan Trust Fund	1,250,000	$12.3M	0.02%
Tenor Capital Management Co., L.P.	1,059,588	$10.4M	0.16%
Polar Asset Management Partners Inc.	1,000,000	$9.85M	0.23%
Sona Asset Management (US) LLC	1,000,000	$9.85M	0.38%
Glazer Capital, LLC	971,419	$9.55M	0.20%
Verition Fund Management LLC	900,000	$8.87M	0.09%
Shaolin Capital Management LLC	737,300	$7.26M	0.30%
Two Sigma Investments, LP	567,675	$5.58M	0.00%
Periscope Capital Inc.	500,000	$4.92M	0.86%
Berkley W R Corp	447,794	$4.41M	0.24%
Radcliffe Capital Management, L.P.	403,982	$3.98M	0.30%
Whitebox Advisors LLC	400,000	$3.94M	0.06%
Ghisallo Capital Management LLC	375,000	$3.69M	0.10%
D. E. Shaw & Co., Inc.	325,001	$3.20M	0.00%
Highbridge Capital Management LLC	277,003	$2.73M	0.17%
Mint Tower Capital Management B.V.	250,000	$2.46M	0.24%
CSS LLC	190,236	$1.87M	0.10%
Clear Street Group Inc.	136,354	$1.34M	0.01%
Hudson Bay Capital Management LP	100,000	$985.0K	0.01%
DLD Asset Management, LP	100,000	$984.5K	0.10%
Galaxy Digital Inc.	100,000	$984.0K	0.15%
Virtu Financial LLC	79,870	$787.0K	0.03%
Boothbay Fund Management, LLC	50,000	$492.3K	0.01%
Deltec Asset Management LLC	50,000	$491.5K	0.09%
Royal Bank of Canada	14,800	$146.0K	0.00%
Schonfeld Strategic Advisors LLC	10,123	$99.6K	0.00%
PenderFund Capital Management Ltd.	5,000	$49.3K	0.01%
Morgan Stanley	17	$167	0.00%

Sold out (0)

Institutions that held Mountain Lake Acquisition Corp. II at the end of Q4 2025 and filed for Q1 2026 without it.

None.