Simplex Trading
MRSN

Simplex Trading’s Mersana Therapeutics MRSN Stock Holding History

Simplex Trading’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
Q3 		– Hold
0
– – – 10329
2025
Q2 		– Sell
-137
Closed -$1.2K – 9962
2025
Q1 		$1K Buy
+137
New +$2.11K ﹤0.01% 8247
2024
Q4 		– Sell
-2,914
Closed -$151K – 9854
2024
Q3 		$137K Buy
2,914
+1,368
+88% +$60.4K ﹤0.01% 4906
2024
Q2 		$77K Buy
1,546
+1,224
+380% +$88.5K ﹤0.01% 5646
2024
Q1 		$36K Buy
322
+89
+38% +$8.85K ﹤0.01% 6585
2023
Q4 		$13K Sell
233
-218
-48% -$8.77K ﹤0.01% 7248
2023
Q3 		$14K Sell
451
-2,183
-83% -$104K ﹤0.01% 6931
2023
Q2 		$216K Buy
2,634
+812
+45% +$119K 0.01% 4216
2023
Q1 		$187K Buy
1,822
+1,698
+1,369% +$238K 0.01% 4404
2022
Q4 		$18K Buy
124
+74
+148% +$12.5K ﹤0.01% 6978
2022
Q3 		$8K Sell
50
-537
-91% -$87.3K ﹤0.01% 8415
2022
Q2 		$67K Sell
587
-100
-15% -$9.4K ﹤0.01% 6102
2022
Q1 		$68K Buy
+687
New +$80.3K ﹤0.01% 6691
2021
Q4 		– Sell
-7
Closed -$1.36K – 11483
2021
Q3 		$2K Sell
7
-4
-36% -$1.17K ﹤0.01% 9542
2021
Q2 		$3K Sell
11
-30
-73% -$11.4K ﹤0.01% 9626
2021
Q1 		$16K Sell
41
-45
-52% -$21.8K ﹤0.01% 7625
2020
Q4 		$57K Buy
+86
New +$47.8K ﹤0.01% 6037
2020
Q3 		– Sell
-71
Closed -$35.9K – 8636
2020
Q2 		$41K Buy
+71
New +$24.2K ﹤0.01% 5662

Other funds holding MRSN

NI
Nextech Invest Zurich, Switzerland $1.42B AUM 304.47% 1-Year Est. Return
AV
Alamea Verwaltungs Edison, New Jersey $135M AUM 36.32% 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
SSA
Schonfeld Strategic Advisors New York $12.3B AUM 37.17% 1-Year Est. Return
RSCM
Rock Springs Capital Management Baltimore, Maryland $1.7B AUM 93.03% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
SCM
Silverarc Capital Management Boston, Massachusetts $849M AUM 470.8% 1-Year Est. Return
6CM
683 Capital Management New York $1.08B AUM 85.52% 1-Year Est. Return
BlackRock
BlackRock New York $5.7T AUM 30.48% 1-Year Est. Return