UOC
MRUS

UBS O'Connor’s Merus MRUS Stock Holding History

UBS O'Connor’s Portfolio MRUS Stock Details MRUS Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q4 		– Sell
-654,126
Closed -$61.6M – 285
2025
Q3 		$61.6M Buy
654,126
+637,422
+3,816% +$41.5M 1.84% 10
2025
Q2 		$879K Sell
16,704
-7,528
-31% -$354K 0.02% 240
2025
Q1 		$1.02M Buy
24,232
+9,692
+67% +$423K 0.02% 183
2024
Q4 		$611K Buy
14,540
+4,618
+47% +$222K 0.02% 265
2024
Q3 		$496K Buy
9,922
+922
+10% +$48.1K 0.01% 345
2024
Q2 		$533K Sell
9,000
-22,642
-72% -$1.1M 0.02% 363
2024
Q1 		$1.42M Sell
31,642
-89,658
-74% -$3.64M 0.04% 238
2023
Q4 		$3.34M Sell
121,300
-30,806
-20% -$719K 0.1% 108
2023
Q3 		$3.59M Buy
152,106
+5,000
+3% +$121K 0.06% 163
2023
Q2 		$3.87M Buy
147,106
+32,026
+28% +$701K 0.08% 157
2023
Q1 		$2.12M Buy
115,080
+50,780
+79% +$885K 0.05% 303
2022
Q4 		$995K Sell
64,300
-12,816
-17% -$226K 0.02% 561
2022
Q3 		$1.54M Buy
77,116
+5,000
+7% +$119K 0.02% 688
2022
Q2 		$1.63M Buy
72,116
+27,116
+60% +$566K 0.02% 692
2022
Q1 		$1.19M Buy
+45,000
New +$1.21M 0.01% 673

Other funds holding MRUS

DekaBank Deutsche Girozentrale
DekaBank Deutsche Girozentrale Frankfurt, Germany $59.2B AUM 26.02% 1-Year Est. Return
XT
XTX Topco George Town, Cayman Islands $7.72B AUM 32.88% 1-Year Est. Return
BIG
Brooklyn Investment Group Brooklyn, New York $3.2B AUM 26.32% 1-Year Est. Return
NAM
NTV Asset Management Charleston, West Virginia $1.02B AUM 31.16% 1-Year Est. Return
FFA
Farther Finance Advisors San Francisco, California $12.8B AUM 26.53% 1-Year Est. Return
Simplex Trading
Simplex Trading Chicago, Illinois $171B AUM 85% 1-Year Est. Return
EWA
EverSource Wealth Advisors Birmingham, Alabama $2.97B AUM 28.72% 1-Year Est. Return
PA
Parallel Advisors San Francisco, California $6.56B AUM 32.24% 1-Year Est. Return
IA
IFP Advisors Tampa, Florida $5.54B AUM 27.43% 1-Year Est. Return

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

UBS O'Connor sold out of Merus (MRUS) in Q4 2025, closing a stake of 654,126 shares — an estimated $61.6M sold.

UBS O'Connor first reported a position in MRUS in Q1 2022 and held it in 15 quarters. The position peaked at $61.6M in Q3 2025. 10 funds tracked by Wall St. Rank hold MRUS as of Q4 2025.

  • UBS O'Connor reported no remaining Merus position as of Q4 2025 after selling out during the quarter.
  • UBS O'Connor sold 654,126 Merus shares in Q4 2025, an estimated $61.6M.
  • UBS O'Connor first reported a position in Merus in Q1 2022 and held it in 15 quarters.
  • UBS O'Connor's Merus position peaked at $61.6M in Q3 2025.
  • 10 funds tracked by Wall St. Rank held Merus as of Q4 2025.

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