Group One Trading’s Mersana Therapeutics MRSN Stock Holding History

Bought
Maintained
Sold
Quarter Market Value Status Shares Change in
Stake
Trade Value Portfolio Weight Portfolio Position
2026
Q1
Sell
-1,073
Closed -$31K 8941
2025
Q4
$31K Buy
1,073
+112
+12% +$2.13K ﹤0.01% 5991
2025
Q3
$7.46K Sell
961
-433
-31% -$3.25K ﹤0.01% 7342
2025
Q2
$10.3K Buy
1,394
+590
+73% +$5.18K ﹤0.01% 6699
2025
Q1
$6.92K Sell
804
-1,287
-62% -$19.9K ﹤0.01% 6488
2024
Q4
$74.8K Buy
2,091
+788
+60% +$40.8K ﹤0.01% 4757
2024
Q3
$61.6K Buy
1,303
+364
+39% +$16.1K ﹤0.01% 4510
2024
Q2
$47.2K Buy
+939
New +$67.9K ﹤0.01% 4560
2024
Q1
Sell
-1,243
Closed -$124K 8271
2023
Q4
$72.1K Sell
1,243
-440
-26% -$17.7K ﹤0.01% 4754
2023
Q3
$53.4K Sell
1,683
-4,729
-74% -$225K ﹤0.01% 5036
2023
Q2
$527K Buy
6,412
+6,328
+7,533% +$926K 0.02% 2959
2023
Q1
$8.63K Buy
+84
New +$11.8K ﹤0.01% 6016
2022
Q4
Sell
-30
Closed -$5.07K 8373
2022
Q3
$5K Sell
30
-51
-63% -$8.29K ﹤0.01% 6835
2022
Q2
$9K Sell
81
-644
-89% -$60.6K ﹤0.01% 6815
2022
Q1
$72K Buy
725
+672
+1,268% +$78.5K ﹤0.01% 5810
2021
Q4
$8K Sell
53
-101
-66% -$19.6K ﹤0.01% 7464
2021
Q3
$36K Buy
+154
New +$45K ﹤0.01% 6790
2021
Q2
Sell
-355
Closed -$134K 8933
2021
Q1
$144K Buy
355
+195
+122% +$94.6K ﹤0.01% 5319
2020
Q4
$107K Buy
+160
New +$89K ﹤0.01% 4515
2020
Q3
Hold
0
6821
2020
Q2
Hold
0
6445

Other funds holding MRSN