RSCM
Rock Springs Capital Management’s Mersana Therapeutics MRSN Stock Holding History
| Quarter | Market Value | Status | Shares |
Shares Change % | Trade Value | Portfolio Weight | Portfolio Position | |
|---|---|---|---|---|---|---|---|---|
|
2025
Q2 | $1.13M | Hold |
3,814,684
| – | – | 0.07% | 84 |
|
|
2025
Q1 | $1.31M | Buy |
3,814,684
+383,000
| +11% | +$132K | 0.08% | 84 |
|
|
2024
Q4 | $4.91M | Buy |
3,431,684
+384,902
| +13% | +$550K | 0.19% | 79 |
|
|
2024
Q3 | $5.76M | Hold |
3,046,782
| – | – | 0.19% | 81 |
|
|
2024
Q2 | $6.12M | Hold |
3,046,782
| – | – | 0.18% | 78 |
|
|
2024
Q1 | $13.6M | Hold |
3,046,782
| – | – | 0.35% | 68 |
|
|
2023
Q4 | $7.07M | Sell |
3,046,782
-356,351
| -10% | -$827K | 0.17% | 78 |
|
|
2023
Q3 | $4.32M | Hold |
3,403,133
| – | – | 0.12% | 86 |
|
|
2023
Q2 | $11.2M | Sell |
3,403,133
-700,670
| -17% | -$2.31M | 0.27% | 74 |
|
|
2023
Q1 | $16.9M | Hold |
4,103,803
| – | – | 0.4% | 64 |
|
|
2022
Q4 | $24M | Buy |
4,103,803
+27,845
| +0.7% | +$163K | 0.58% | 51 |
|
|
2022
Q3 | $27.6M | Hold |
4,075,958
| – | – | 0.71% | 46 |
|
|
2022
Q2 | $18.8M | Buy |
4,075,958
+320,138
| +9% | +$1.48M | 0.55% | 53 |
|
|
2022
Q1 | $15M | Buy |
3,755,820
+506,870
| +16% | +$2.02M | 0.38% | 67 |
|
|
2021
Q4 | $20.2M | Buy |
3,248,950
+228,248
| +8% | +$1.42M | 0.47% | 64 |
|
|
2021
Q3 | $28.5M | Buy |
3,020,702
+175,084
| +6% | +$1.65M | 0.6% | 55 |
|
|
2021
Q2 | $38.6M | Buy |
2,845,618
+70,491
| +3% | +$957K | 0.76% | 48 |
|
|
2021
Q1 | $44.9M | Buy |
2,775,127
+711,460
| +34% | +$11.5M | 0.98% | 31 |
|
|
2020
Q4 | $54.9M | Buy |
2,063,667
+178,239
| +9% | +$4.74M | 1.16% | 27 |
|
|
2020
Q3 | $35.1M | Buy |
1,885,428
+7,000
| +0.4% | +$130K | 0.89% | 37 |
|
|
2020
Q2 | $44M | Buy |
1,878,428
+645,428
| +52% | +$15.1M | 1.21% | 27 |
|
|
2020
Q1 | $7.19M | Hold |
1,233,000
| – | – | 0.3% | 87 |
|
|
2019
Q4 | $7.07M | Sell |
1,233,000
-167,000
| -12% | -$957K | 0.22% | 96 |
|
|
2019
Q3 | $2.21M | Hold |
1,400,000
| – | – | 0.09% | 125 |
|
|
2019
Q2 | $5.67M | Hold |
1,400,000
| – | – | 0.21% | 95 |
|
|
2019
Q1 | $7.36M | Buy |
1,400,000
+400,000
| +40% | +$2.1M | 0.28% | 92 |
|
|
2018
Q4 | $4.08M | Hold |
1,000,000
| – | – | 0.19% | 105 |
|
|
2018
Q3 | $10M | Hold |
1,000,000
| – | – | 0.36% | 86 |
|
|
2018
Q2 | $17.9M | Sell |
1,000,000
-300,000
| -23% | -$5.36M | 0.69% | 48 |
|
|
2018
Q1 | $20.5M | Sell |
1,300,000
-26,800
| -2% | -$423K | 0.87% | 38 |
|
|
2017
Q4 | $21.8M | Sell |
1,326,800
-3,200
| -0.2% | -$52.6K | 0.99% | 31 |
|
|
2017
Q3 | $23M | Sell |
1,330,000
-197,893
| -13% | -$3.42M | 1.06% | 27 |
|
|
2017
Q2 | $21.3M | Buy |
+1,527,893
| New | +$21.3M | 1.08% | 31 |
|