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MLAA · Mountain Lake Acquisition Corp. II · Holdings

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$10.02
Rebalance outlook locked
Market Cap
$490.29M
Shares
48.98M
Volume · Oct 2 30.4K Avg daily vol (3M) 76.35K

Institutional ownership from SEC Form 13F filings. Investment managers with more than $100 million in U.S. equities must disclose their positions every quarter, within 45 days of quarter-end, so the holdings shown can lag the market by up to a quarter.

Use institutional holdings through the 13F API or MCP →
Some SEC filings for this period have not finished importing. Holder totals and changes may be incomplete; these filings remain queued for recovery.
Holders: 72
Total Value: $323,925,236
Total Shares: 49,512,812
Showing 1–100 of 119 holdings by value · page 1 of 2

Institutional Ownership Trend

2 quarters

Holder Concentration

Across 72 13F filers · Δ vs Mar 31, 2026
Top Holder
6.7%
Mar 2026 → Jun 2026 · range 6.7% – 6.7%
+0.0 pts
Top 5
29.2%
Mar 2026 → Jun 2026 · range 29.0% – 29.2%
+0.3 pts
Top 10
48.8%
Mar 2026 → Jun 2026 · range 47.2% – 48.8%
+1.6 pts
HHI
349
Mar 2026 → Jun 2026 · range 328 – 349
Broadly held+21

Quarterly Activity

vs Mar 31, 2026
New
13
Increased
26
Decreased
20
Sold Out
2
Unchanged
13
Holder count: +11
Institutional value: -0.4%
Shares held: +20.5%

Top Buyers

vs Mar 31, 2026
Institution Added Now Holds Open
HIGHBRIDGE CAPITAL MANAGEMENT LLC +1,554,185 1,831,188
ARISTEIA CAPITAL, L.L.C. +1,097,713 3,284,107
Alberta Investment Management Corp +875,000 2,625,000
AQR Arbitrage LLC +757,967 2,173,623
D. E. Shaw & Co., Inc. +754,999 1,242,500

Top Sellers

vs Mar 31, 2026
Institution Sold Now Holds Open
HEALTHCARE OF ONTARIO PENSION PLAN TRUST FUND −1,250,000 625,000
Verition Fund Management LLC −517,762 1,144,174
Shaolin Capital Management LLC −458,763 647,186
ADAGE CAPITAL PARTNERS GP, L.L.C. −350,000 2,800,000
Magnetar Financial LLC −225,000 2,775,000

Top New Positions

vs Mar 31, 2026
Institution Acquired Value (USD) Open
Kryger Capital LLC 1,270,887 $12,619,907
Fort Baker Capital Management LP 1,023,500 $9,930,000
Rangeley Capital, LLC 127,791 $1,268,964
MIZUHO SECURITIES USA LLC 125,405 $1,245,271
READYSTATE ASSET MANAGEMENT LP 225,736 $1,241,250

Top Sold-Out Positions

vs Mar 31, 2026
Institution Previously Held Last Value (USD) Open
ABC ARBITRAGE SA 40,000 $397,200
ROYAL BANK OF CANADA 17,900 $145,780
Filter: New 13 Increased 26 Reduced 20 Sold out 2 Unchanged 13
Showing 100 of 119
All Common Calls Puts
Export CSV
Holder Value (USD) % of 13F Shares Open
ARISTEIA CAPITAL, L.L.C. $21,740,791 6.71% 2,189,405
ADAGE CAPITAL PARTNERS GP, L.L.C. $20,853,000 6.44% 2,100,000
Magnetar Financial LLC $19,860,000 6.13% 2,000,000
Alberta Investment Management Corp $17,377,500 5.36% 1,750,000
Linden Advisors LP $14,895,000 4.60% 1,500,000
AQR Arbitrage LLC $14,389,384 4.44% 1,449,082
HIGHBRIDGE CAPITAL MANAGEMENT LLC $13,002,927 4.01% 1,309,459
Kryger Capital LLC $12,619,907 3.90% 1,270,887
LMR Partners LLP $12,412,500 3.83% 1,250,000
D. E. Shaw & Co., Inc. $10,724,400 3.31% 1,080,000
TENOR CAPITAL MANAGEMENT Co., L.P. $10,521,708 3.25% 1,059,588
SONA ASSET MANAGEMENT (US) LLC $9,930,000 3.07% 1,000,000
Fort Baker Capital Management LP $9,930,000 3.07% 1,000,000
GLAZER CAPITAL, LLC $9,433,500 2.91% 950,000
Westchester Capital Management, LLC $8,475,423 2.62% 853,517
Polar Asset Management Partners Inc. $7,944,000 2.45% 800,000
MILLENNIUM MANAGEMENT LLC $7,596,450 2.35% 765,000
BNP PARIBAS ARBITRAGE, SA $7,377,572 2.28% 742,958
First Trust Capital Management L.P. $5,958,000 1.84% 600,000
Verition Fund Management LLC $5,834,768 1.80% 587,590
TWO SIGMA INVESTMENTS, LP $5,637,012 1.74% 567,675
MOORE CAPITAL MANAGEMENT, LP $4,965,000 1.53% 500,000
MMCAP International Inc. SPC $4,965,000 1.53% 500,000
PICTON MAHONEY ASSET MANAGEMENT $4,965,000 1.53% 500,000
RIVERNORTH CAPITAL MANAGEMENT, LLC $4,960,342 1.53% 499,531
Radcliffe Capital Management, L.P. $4,549,091 1.40% 458,116
BERKLEY W R CORP $4,446,594 1.37% 447,794
Shaolin Capital Management LLC $4,255,372 1.31% 428,537
Sculptor Capital LP $4,245,392 1.31% 427,532
WHITEBOX ADVISORS LLC $3,972,000 1.23% 400,000
WOLVERINE ASSET MANAGEMENT LLC $3,900,285 1.20% 392,778
Ghisallo Capital Management LLC $3,723,750 1.15% 375,000
Periscope Capital Inc. $3,475,500 1.07% 350,000
Wealthspring Capital LLC $3,341,246 1.03% 336,480
Lineage Point Capital LP $2,921,545 0.90% 294,214
Mint Tower Capital Management B.V. $2,482,500 0.77% 250,000
Schonfeld Strategic Advisors LLC $2,333,550 0.72% 235,000
COMMONWEALTH OF PENNSYLVANIA PUBLIC SCHOOL EMPLS RETRMT SYS $1,986,000 0.61% 200,000
RLH Capital LLC $1,489,500 0.46% 150,000
Rangeley Capital, LLC $1,268,964 0.39% 127,791
MIZUHO SECURITIES USA LLC $1,245,271 0.38% 125,405
READYSTATE ASSET MANAGEMENT LP $1,241,250 0.38% 125,000
CSS LLC/IL $1,037,694 0.32% 104,501
HGC Investment Management Inc. $993,000 0.31% 100,000
DLD Asset Management, LP $993,000 0.31% 100,000
Quarry LP $747,063 0.23% 75,233
Hudson Bay Capital Management LP $496,500 0.15% 50,000
Centiva Capital, LP $414,845 0.13% 41,777
Virtu Financial LLC $361,342 0.11% 36,389
Cable Car Capital, LP $297,900 0.09% 30,000
DELTEC ASSET MANAGEMENT LLC $297,900 0.09% 30,000
Clear Street Group Inc. $250,315 0.08% 25,208
PenderFund Capital Management Ltd. $232,362 0.07% 23,400
CITADEL ADVISORS LLC $159,465 0.05% 16,059
HIGHBRIDGE CAPITAL MANAGEMENT LLC MLAAW $135,650 0.04% 521,729
METEORA CAPITAL, LLC $124,442 0.04% 12,532
TrueMark Investments, LLC $109,537 0.03% 11,031
Arax Advisory Partners $14,895 0.00% 1,500
JPMORGAN CHASE & CO $12,104 0.00% 1,219
MORGAN STANLEY $228 0.00% 23
Schonfeld Strategic Advisors LLC MLAAW — — 75,000
MOORE CAPITAL MANAGEMENT, LP MLAAW — — 250,000
AQR Arbitrage LLC MLAAW — — 724,541
Alberta Investment Management Corp MLAAW — — 875,000
Centiva Capital, LP MLAAW — — 95,000
Radcliffe Capital Management, L.P. MLAAW — — 251,890
Clear Street Group Inc. MLAAU — — 118,425
RLH Capital LLC MLAAW — — 75,000
RIVERNORTH CAPITAL MANAGEMENT, LLC MLAAW — — 250,000
ADAGE CAPITAL PARTNERS GP, L.L.C. MLAAW — — 700,000
MILLENNIUM MANAGEMENT LLC MLAAW — — 318,100
BNP PARIBAS ARBITRAGE, SA MLAAW — — 371,479
CSS LLC/IL MLAAW — — 78,118
Lineage Point Capital LP MLAAW — — 648,472
MMCAP International Inc. SPC MLAAW — — 250,000
Cable Car Capital, LP MLAAW — — 15,000
Quarry LP MLAAW — — 37,500
Linden Advisors LP MLAAW — — 749,999
SONA ASSET MANAGEMENT (US) LLC MLAAW — — 500,000
Fort Baker Capital Management LP MLAAW — — 23,500
READYSTATE ASSET MANAGEMENT LP MLAAW — — 100,736
Polar Asset Management Partners Inc. MLAAW — — 500,000
BOOTHBAY FUND MANAGEMENT, LLC MLAAW — — 90,550
HGC Investment Management Inc. MLAAW — — 88,352
TENOR CAPITAL MANAGEMENT Co., L.P. MLAAW — — 529,794
LMR Partners LLP MLAAW — — 625,000
Walleye Capital LLC MLAAW — — 75,000
Shaolin Capital Management LLC MLAAW — — 218,649
PICTON MAHONEY ASSET MANAGEMENT MLAAW — — 250,000
GLAZER CAPITAL, LLC MLAAW — — 350,000
OMERS ADMINISTRATION Corp MLAAU — — 626,400
Qube Research & Technologies Ltd MLAAU — — 250,000
D. E. Shaw & Co., Inc. MLAAW — — 162,500
TORONTO DOMINION BANK MLAAW — — 119,104
Clear Street Group Inc. MLAAW — — 44,387
Verition Fund Management LLC MLAAW — — 556,584
METEORA CAPITAL, LLC MLAAW — — 95,000
TUDOR INVESTMENT CORP ET AL MLAAU — — 300,000
Sculptor Capital LP MLAAW — — 52,179
WHITEBOX ADVISORS LLC MLAAW — — 200,000
Key facts CIK 2094265 CUSIP G6301L109