SO
MRSN

STRS Ohio’s Mersana Therapeutics MRSN Stock Holding History

STRS Ohio’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
Q2 		– Sell
-348
Closed -$3K – 2270
2025
Q1 		$3K Hold
348
– – ﹤0.01% 1905
2024
Q4 		$12.4K Hold
348
– – ﹤0.01% 1838
2024
Q3 		$16.4K Hold
348
– – ﹤0.01% 1903
2024
Q2 		$17.5K Buy
348
+252
+263% +$18.2K ﹤0.01% 1898
2024
Q1 		$10K Sell
96
-4
-4% -$398 ﹤0.01% 1880
2023
Q4 		$5K Hold
100
– – ﹤0.01% 1890
2023
Q3 		$3K Hold
100
– – ﹤0.01% 1924
2023
Q2 		$8K Hold
100
– – ﹤0.01% 1916
2023
Q1 		$10K Hold
100
– – ﹤0.01% 1901
2022
Q4 		$14K Hold
100
– – ﹤0.01% 1905
2022
Q3 		$16K Hold
100
– – ﹤0.01% 1943
2022
Q2 		$11K Hold
100
– – ﹤0.01% 1994
2022
Q1 		$9K Hold
100
– – ﹤0.01% 2098
2021
Q4 		$15K Buy
+100
New +$19.5K ﹤0.01% 2140
2021
Q3 		– Sell
-6,150
Closed -$2.09M – 2290
2021
Q2 		$2.09M Hold
6,150
– – 0.01% 743
2021
Q1 		$2.49M Sell
6,150
-72
-1% -$34.9K 0.01% 634
2020
Q4 		$4.14M Buy
6,222
+4,425
+246% +$2.46M 0.02% 519
2020
Q3 		$836K Buy
1,797
+1,329
+284% +$672K ﹤0.01% 1024
2020
Q2 		$273K Buy
+468
New +$160K ﹤0.01% 1562
2018
Q3 		– Sell
-276
Closed -$92.5K – 2151
2018
Q2 		$123K Hold
276
– – ﹤0.01% 1827
2018
Q1 		$108K Buy
276
+216
+360% +$85.3K ﹤0.01% 1590
2017
Q4 		$24K Hold
60
– – ﹤0.01% 1812
2017
Q3 		$25K Buy
+60
New +$23.6K ﹤0.01% 1857

Other funds holding MRSN

NI
Nextech Invest Zurich, Switzerland $2.11B AUM 413.84% 1-Year Est. Return
BCLSI
Bain Capital Life Sciences Investors Boston, Massachusetts $1.68B AUM 126.09% 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 $27.9B AUM 51.18% 1-Year Est. Return
AQR Capital Management
AQR Capital Management Greenwich, Connecticut $287B AUM 42.33% 1-Year Est. Return
RSCM
Rock Springs Capital Management Baltimore, Maryland $2.05B AUM 161.37% 1-Year Est. Return
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
SCM
Silverarc Capital Management Boston, Massachusetts $962M AUM 524.64% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $84.2B AUM 55.88% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $72.6B AUM 54.88% 1-Year Est. Return

STRS Ohio's MRSN Position: Q2 2025 in Review

STRS Ohio sold out of Mersana Therapeutics (MRSN) in Q2 2025, closing a stake of 348 shares — an estimated $3K sold.

STRS Ohio first reported a position in MRSN in Q3 2017 and held it in 23 quarters. The position peaked at $4.14M in Q4 2020. 83 funds tracked by Wall St. Rank hold MRSN as of Q2 2025.

  • STRS Ohio reported no remaining Mersana Therapeutics position as of Q2 2025 after selling out during the quarter.
  • STRS Ohio sold 348 Mersana Therapeutics shares in Q2 2025, an estimated $3K.
  • STRS Ohio first reported a position in Mersana Therapeutics in Q3 2017 and held it in 23 quarters.
  • STRS Ohio's Mersana Therapeutics position peaked at $4.14M in Q4 2020.
  • 83 funds tracked by Wall St. Rank held Mersana Therapeutics as of Q2 2025.

Based on STRS Ohio's 13F filing for Q2 2025, filed 4 Aug 2025.