State Board of Administration of Florida Retirement System
MRSN

State Board of Administration of Florida Retirement System’s Mersana Therapeutics MRSN Stock Holding History

State Board of Administration of Florida Retirement System’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
-1,152
Closed -$9.91K – 2181
2025
Q1 		$9.91K Hold
1,152
– – ﹤0.01% 2163
2024
Q4 		$41.2K Hold
1,152
– – ﹤0.01% 2175
2024
Q3 		$54.4K Hold
1,152
– – ﹤0.01% 2199
2024
Q2 		$57.9K Buy
1,152
+56
+5% +$4.05K ﹤0.01% 2167
2024
Q1 		$113K Sell
1,096
-56
-5% -$5.57K ﹤0.01% 2043
2023
Q4 		$66.8K Buy
+1,152
New +$46.3K ﹤0.01% 2300
2023
Q3 		– Sell
-1,139
Closed -$93.7K – 2386
2023
Q2 		$93.7K Buy
1,139
+43
+4% +$6.29K ﹤0.01% 2289
2023
Q1 		$113K Hold
1,096
– – ﹤0.01% 2127
2022
Q4 		$161K Buy
1,096
+4
+0.4% +$676 ﹤0.01% 2112
2022
Q3 		$184K Hold
1,092
– – ﹤0.01% 2088
2022
Q2 		$126K Buy
1,092
+1
+0.1% +$94 ﹤0.01% 2217
2022
Q1 		$109K Hold
1,091
– – ﹤0.01% 2263
2021
Q4 		$170K Buy
1,091
+6
+0.6% +$1.17K ﹤0.01% 2251
2021
Q3 		$256K Hold
1,085
– – ﹤0.01% 2159
2021
Q2 		$368K Buy
1,085
+191
+21% +$72.3K ﹤0.01% 2032
2021
Q1 		$362K Sell
894
-28
-3% -$13.6K ﹤0.01% 1967
2020
Q4 		$613K Sell
922
-29
-3% -$16.1K ﹤0.01% 1669
2020
Q3 		$443K Buy
951
+166
+21% +$83.9K ﹤0.01% 1698
2020
Q2 		$459K Buy
+785
New +$268K ﹤0.01% 1667

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
SSA
Schonfeld Strategic Advisors New York $14.2B 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
BlackRock
BlackRock New York $6.73T AUM 46.02% 1-Year Est. Return
SCM
Silverarc Capital Management Boston, Massachusetts $980M AUM 470.8% 1-Year Est. Return
Acadian Asset Management
Acadian Asset Management Boston, Massachusetts $70.5B AUM 36% 1-Year Est. Return
Renaissance Technologies
Renaissance Technologies New York $63.9B AUM 45.56% 1-Year Est. Return

State Board of Administration of Florida Retirement System's MRSN Position: Q2 2025 in Review

State Board of Administration of Florida Retirement System sold out of Mersana Therapeutics (MRSN) in Q2 2025, closing a stake of 1,152 shares — an estimated $9.91K sold.

State Board of Administration of Florida Retirement System first reported a position in MRSN in Q2 2020 and held it in 19 quarters. The position peaked at $613K in Q4 2020. 83 funds tracked by Wall St. Rank hold MRSN as of Q2 2025.

  • State Board of Administration of Florida Retirement System reported no remaining Mersana Therapeutics position as of Q2 2025 after selling out during the quarter.
  • State Board of Administration of Florida Retirement System sold 1,152 Mersana Therapeutics shares in Q2 2025, an estimated $9.91K.
  • State Board of Administration of Florida Retirement System first reported a position in Mersana Therapeutics in Q2 2020 and held it in 19 quarters.
  • State Board of Administration of Florida Retirement System's Mersana Therapeutics position peaked at $613K in Q4 2020.
  • 83 funds tracked by Wall St. Rank held Mersana Therapeutics as of Q2 2025.

Based on State Board of Administration of Florida Retirement System's 13F filing for Q2 2025, filed 13 Aug 2025.