SFM
MRSN

Sphera Funds Management’s Mersana Therapeutics MRSN Stock Holding History

Sphera Funds Management’s Portfolio MRSN Stock Details MRSN Fund Activity
Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake 		Trade Value Portfolio Weight Portfolio Position
2025
Q1 		– Sell
-27,611
Closed -$987K – 124
2024
Q4 		$987K Buy
+27,611
New +$1.43M 0.18% 92
2023
Q3 		– Sell
-16,742
Closed -$1.38M – 98
2023
Q2 		$1.38M Buy
16,742
+16,317
+3,839% +$2.39M 0.3% 78
2023
Q1 		$43.7K Buy
+425
New +$59.7K 0.01% 81
2019
Q4 		– Sell
-8,000
Closed -$316K – 95
2019
Q3 		$316K Hold
8,000
– – 0.05% 78
2019
Q2 		$810K Hold
8,000
– – 0.12% 80
2019
Q1 		$1.05M Buy
+8,000
New +$1.01M 0.14% 92

Other funds holding MRSN

NI
Nextech Invest Zurich, Switzerland $1.42B AUM 304.47% 1-Year Est. Return
BCLSI
Bain Capital Life Sciences Investors Boston, Massachusetts $1.11B AUM 171.34% 1-Year Est. Return
Vanguard Group
Vanguard Group Malvern, Pennsylvania $6.9T AUM 27.45% 1-Year Est. Return
BlackRock
BlackRock New York $5.7T AUM 30.48% 1-Year Est. Return
SSA
Schonfeld Strategic Advisors New York $12.3B AUM 37.17% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $218B AUM 29.41% 1-Year Est. Return
RSCM
Rock Springs Capital Management Baltimore, Maryland $1.7B AUM 93.03% 1-Year Est. Return
VA
VR Adviser New York $2.68B AUM 422.73% 1-Year Est. Return
SCM
Silverarc Capital Management Boston, Massachusetts $849M AUM 470.8% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return