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Disclosery

MLAC MOUNTAIN LAKE ACQUISITION CO

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Common (common)

45 managers (45 13F filers) reported a position in MLAC shares at 2025-06-30, 21,923,413 shares in all. 13 filers opened a position and 5 filers sold out during the quarter.

Managers
45
13F filers
45
New
13
Added
7
Reduced
9
Sold out
5
Shares held by filers
21,923,413

Shares held by filers adds up every 13F filer's report, so a share reported by a parent and by its subsidiary counts twice (H9). Managers counts each filer group once.

13D and 13G filers

No 13D or 13G on this security in the data. Structured 13D/G data starts 2024-12-18.

Insider trades

No Form 4 transaction on this security in the data.

13F holders, Q2 2025

Filers in the available 13F reports with a share position at 2025-06-30, filer groups collapsed to one row (method), largest first. Options and principal amounts are left out. A group row states no % of portfolio, since each member reports its own portfolio: the members' percents are listed under it. A value about 1,000 times or 1/1,000 of the price other filers imply is shown as filed but neither ranks the row nor enters a sum.

HolderSharesValue% of portfolioChangeSource
Magnetar Financial LLCin group Magnetar Financial LLC1,900,000$19.5M0.09%new13F-HRTimelineGroup
WOLVERINE ASSET MANAGEMENT LLCin group WOLVERINE ASSET MANAGEMENT LLC1,553,458$15.9M0.27%+1,073,94113F-HRTimelineGroup
AQR Arbitrage LLCin group AQR CAPITAL MANAGEMENT LLC1,507,906$15.5M0.36%-26,00013F-HRTimelineGroup
Polar Asset Management Partners Inc.1,480,000$15.2M0.38%-400,00013F-HRTimeline
Westchester Capital Management, LLCin group Westchester Capital Managemen…1,182,271$12.1M0.71%+882,27113F-HRTimelineGroup
D. E. Shaw & Co., Inc.in group D. E. Shaw & Co., Inc.1,092,500$11.2M0.01%+17,50013F-HRTimelineGroup
First Trust Capital Management L.P.in group FIRST TRUST ADVISORS LP1,005,000$10.3M0.7%+5,00013F-HRTimelineGroup
Alberta Investment Management Corp980,000$10.1M0.08%new13F-HR/ATimeline
Linden Advisors LPin group Linden Advisors LP875,000$8.98M0.06%013F-HRTimelineGroup
TWO SIGMA INVESTMENTS, LPin group TWO SIGMA INVESTMENTS, LP761,250$7.81M0.01%013F-HRTimelineGroup
Governors Lane LP733,200$7.52M1.03%new13F-HRTimeline
Karpus Management, Inc.724,320$7.43M0.24%-195,48013F-HRTimeline
Hudson Bay Capital Management LPin group Hudson Bay Capital Management…700,000$7.18M0.05%013F-HR/ATimelineGroup
HGC Investment Management Inc.700,000$7.18M2%013F-HRTimeline
GLAZER CAPITAL, LLCin group GLAZER CAPITAL, LLC628,000$6.44M0.23%-3,85913F-HRTimelineGroup
TENOR CAPITAL MANAGEMENT Co., L.P.500,000$5.13M0.07%013F-HRTimeline
LMR Partners LLPin group LMR Partners LLP500,000$5.13M0.08%013F-HRTimelineGroup
Jain Global LLC500,000$5.13M0.08%new13F-HRTimeline
GOLDMAN SACHS GROUP INCin group GOLDMAN SACHS GROUP INC446,094$4.58M<0.01%013F-HRTimelineGroup
MIZUHO SECURITIES USA LLCin group MIZUHO FINANCIAL GROUP INC450,007$4.57M0.1%13F-HRTimelineGroup
MILLENNIUM MANAGEMENT LLCin group MILLENNIUM MANAGEMENT LLC427,587$4.39M<0.01%new13F-HRTimelineGroup
Periscope Capital Inc.350,000$3.59M1.36%+103,10013F-HRTimeline
WHITEBOX ADVISORS LLC300,000$3.08M0.08%013F-HRTimeline
OCONNOR, A Distinct Business Unit of UB…250,000$2.56M0.07%new13F-HRTimelineThe filing omitted confidential holdings, a later amendment may add them.
PICTON MAHONEY ASSET MANAGEMENT250,000$2.56M0.04%013F-HRTimeline
BERKLEY W R CORP218,060$2.24M0.14%013F-HRTimeline
TORONTO DOMINION BANKin group TORONTO DOMINION BANK206,447$2.12M<0.01%+3,48513F-HRTimelineGroup
Verition Fund Management LLC204,944$2.1M0.01%-117,70613F-HRTimeline
MOORE CAPITAL MANAGEMENT, LP200,000$2.05M0.04%new13F-HRTimeline
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCH…199,600$2.05M0.01%013F-HRTimeline
DLD Asset Management, LP175,000$1.8M0.22%-150,00013F-HR/ATimeline
GRITSTONE ASSET MANAGEMENT LLC169,310$1.74M1.72%013F-HRTimeline
Wealthspring Capital LLCin group Wealthspring Capital LLC150,960$1.55M0.41%new13F-HRTimelineGroup
ARISTEIA CAPITAL, L.L.C.150,000$1.54M0.04%new13F-HRTimeline
Mint Tower Capital Management B.V.100,000$1.03M0.15%013F-HRTimeline
Schonfeld Strategic Advisors LLC80,000$821K0.01%-70,00013F-HRTimeline
DELTEC ASSET MANAGEMENT LLC50,000$513K0.09%013F-HRTimeline
LANDSCAPE CAPITAL MANAGEMENT, L.L.C.in group LANDSCAPE CAPITAL MANAGEMENT,…45,576$468K0.04%new13F-HRTimelineGroup
Wellspring Financial Advisors, LLC35,000$359K0.04%new13F-HRTimeline
Centiva Capital, LP25,100$258K0.02%new13F-HRTimeline
Virtu Financial LLCin group Virtu Financial LLC16,036$165K0.01%-64,07713F-HRTimelineGroup
CLEAR STREET LLC3,869$39.7K<0.01%-1,15313F-HRTimeline
MORGAN STANLEYin group MORGAN STANLEY64$657<0.01%+2013F-HRTimelineGroup
Radcliffe Capital Management, L.P.96,854$00%new13F-HRTimelineValue filed as zero, left out of ratios.
CONCOURSE FINANCIAL GROUP SECURITIES, I…0$0013F-HRTimelineValue filed as zero, left out of ratios. Amount filed as zero, left out of ratios.