CAM
MRUS

Cormorant Asset Management’s Merus MRUS Stock Holding History

Cormorant Asset Management’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
Q3 		– Sell
-1,120,000
Closed -$58.9M – 39
2025
Q2 		$58.9M Buy
1,120,000
+380,000
+51% +$17.9M 4.39% 5
2025
Q1 		$31.1M Hold
740,000
– – 2.34% 13
2024
Q4 		$31.1M Hold
740,000
– – 1.71% 15
2024
Q3 		$37M Sell
740,000
-100,000
-12% -$5.22M 1.96% 16
2024
Q2 		$49.7M Buy
840,000
+125,000
+17% +$6.05M 2.87% 10
2024
Q1 		$32.2M Buy
+715,000
New +$29M 1.41% 21
2022
Q1 		– Sell
-100,000
Closed -$3.18M – 82
2021
Q4 		$3.18M Sell
100,000
-150,000
-60% -$4.24M 0.19% 64
2021
Q3 		$5.5M Sell
250,000
-35,096
-12% -$753K 0.22% 67
2021
Q2 		$6.01M Sell
285,096
-64,904
-19% -$1.43M 0.2% 77
2021
Q1 		$7.31M Hold
350,000
– – 0.16% 83
2020
Q4 		$6.14M Sell
350,000
-79,284
-18% -$1.17M 0.15% 80
2020
Q3 		$5.15M Sell
429,284
-170,716
-28% -$2.2M 0.2% 74
2020
Q2 		$9.65M Hold
600,000
– – 0.37% 59
2020
Q1 		$7.26M Sell
600,000
-400,000
-40% -$6.33M 0.34% 55
2019
Q4 		$14.1M Buy
+1,000,000
New +$16.1M 0.56% 44

Other funds holding MRUS

PBA
Paradigm Biocapital Advisors New York $5.34B AUM 380.18% 1-Year Est. Return
ACA
Avoro Capital Advisors New York $11.1B AUM 207.82% 1-Year Est. Return
CC
Commodore Capital New York $1.68B AUM 375.52% 1-Year Est. Return
DM
Deerfield Management New York $9.59B AUM 113.36% 1-Year Est. Return
HI
HBK Investments Dallas, Texas $10.2B AUM 67.73% 1-Year Est. Return
Fidelity Investments
Fidelity Investments Boston, Massachusetts $2.3T AUM 54.33% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
Westfield Capital Management
Westfield Capital Management Boston, Massachusetts $30.6B AUM 61.81% 1-Year Est. Return
RI
RTW Investments New York $11.7B AUM 174.13% 1-Year Est. Return
WP
Woodline Partners San Francisco, California $32.4B AUM 58.5% 1-Year Est. Return

Cormorant Asset Management's MRUS Position: Q3 2025 in Review

Cormorant Asset Management sold out of Merus (MRUS) in Q3 2025, closing a stake of 1,120,000 shares — an estimated $58.9M sold.

Cormorant Asset Management first reported a position in MRUS in Q4 2019 and held it in 15 quarters. The position peaked at $58.9M in Q2 2025. 268 funds tracked by Wall St. Rank hold MRUS as of Q3 2025.

  • Cormorant Asset Management reported no remaining Merus position as of Q3 2025 after selling out during the quarter.
  • Cormorant Asset Management sold 1,120,000 Merus shares in Q3 2025, an estimated $58.9M.
  • Cormorant Asset Management first reported a position in Merus in Q4 2019 and held it in 15 quarters.
  • Cormorant Asset Management's Merus position peaked at $58.9M in Q2 2025.
  • 268 funds tracked by Wall St. Rank held Merus as of Q3 2025.

Based on Cormorant Asset Management's 13F filing for Q3 2025, filed 14 Nov 2025.