UBS O'Connor
MLAC

UBS O'Connor’s Mountain Lake Acquisition Corp MLAC Stock Holding History

UBS O'Connor’s Portfolio MLAC Stock Details MLAC Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		$1.56M Sell
149,912
-100,088
-40% -$1.04M 0.04% 120
2025
Q3 		$2.58M Hold
250,000
– – 0.08% 112
2025
Q2 		$2.56M Buy
+250,000
New +$2.54M 0.07% 129

Other funds holding MLAC

Tenor Capital Management
Tenor Capital Management New York $7.09B AUM 3.55% 1-Year Est. Return
Magnetar Financial
Magnetar Financial Evanston, Illinois $11B AUM 3.37% 1-Year Est. Return
Polar Asset Management Partners
Polar Asset Management Partners Toronto, Ontario, Canada $6.07B AUM 34.81% 1-Year Est. Return
AQR Arbitrage
AQR Arbitrage Greenwich, Connecticut $7.02B AUM 31.58% 1-Year Est. Return
First Trust Capital Management
First Trust Capital Management Chicago, Illinois $1.72B AUM 70.66% 1-Year Est. Return
Alberta Investment Management Corp (AIMCo)
Alberta Investment Management Corp (AIMCo) Edmonton, Alberta, Canada $17.9B AUM 27.56% 1-Year Est. Return
Wolverine Asset Management
Wolverine Asset Management Chicago, Illinois $14.9B AUM 3.61% 1-Year Est. Return
Mizuho Securities USA
Mizuho Securities USA New York $6.2B AUM 35.46% 1-Year Est. Return
Westchester Capital Management (New York)
Westchester Capital Management (New York) Valhalla, New York $2.04B AUM 31.03% 1-Year Est. Return
Linden Advisors
Linden Advisors New York $19.3B AUM 1.47% 1-Year Est. Return

UBS O'Connor's MLAC Position: Q4 2025 in Review

UBS O'Connor reduced its Mountain Lake Acquisition Corp (MLAC) stake by 40% in Q4 2025, selling an estimated $1.04M and leaving 149,912 shares worth $1.56M. The position accounts for 0.04% of the portfolio, ranked #120.

UBS O'Connor first reported a position in MLAC in Q2 2025 and has held it in 3 quarters since. The position peaked at $2.58M in Q3 2025. 48 funds tracked by Wall St. Rank hold MLAC as of Q4 2025.

  • UBS O'Connor held 149,912 shares of Mountain Lake Acquisition Corp worth $1.56M as of Q4 2025.
  • UBS O'Connor sold 100,088 Mountain Lake Acquisition Corp shares in Q4 2025, an estimated $1.04M.
  • Mountain Lake Acquisition Corp made up 0.04% of UBS O'Connor's portfolio in Q4 2025, its #120 holding.
  • UBS O'Connor first reported a position in Mountain Lake Acquisition Corp in Q2 2025 and has held it in 3 quarters since.
  • UBS O'Connor's Mountain Lake Acquisition Corp position peaked at $2.58M in Q3 2025.
  • 48 funds tracked by Wall St. Rank held Mountain Lake Acquisition Corp as of Q4 2025.

Based on UBS O'Connor's 13F filing for Q4 2025, filed 13 Feb 2026.