(MRSN) Stock Institutional Trading Activity


(MRSN) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q2 2025), investors with some of the largest reported share count changes include Renaissance Technologies LLC. Explore insights into buying and selling patterns, position changes, and investment conviction levels to understand institutional trading behavior and market dynamics.

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Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q2 2025Renaissance Technologies LLCBuy2,010,2752,850,194$843,657
Q1 2025Renaissance Technologies LLCBuy233,634839,919$289,100
Q4 2024Renaissance Technologies LLCBuy113,566606,285$866,988
Q3 2024Renaissance Technologies LLCSell-955,500492,719$931,239
Q2 2024Renaissance Technologies LLCBuy20,4001,448,219$2,910,920
Q1 2024Renaissance Technologies LLCBuy562,0881,427,819$6,397
Q4 2023Renaissance Technologies LLCSell-60,188865,731$2,008
Q3 2023Renaissance Technologies LLCSell-122,000925,919$1,176
Q2 2023Renaissance Technologies LLCSell-202,6001,047,919$3,448
Q1 2023Renaissance Technologies LLCBuy678,8001,250,519$5,140
Q4 2022Renaissance Technologies LLCSell-127,100571,719$3,350
Q3 2022Renaissance Technologies LLCBuy128,500698,819$4,724
Q2 2022Renaissance Technologies LLCSell-348,881570,319$2,635
Q1 2022Renaissance Technologies LLCBuy576,600919,200$3,668
Q4 2021Renaissance Technologies LLCBuy271,100342,600$2,131
Q3 2020Renaissance Technologies LLCSell-268,76871,500$1,331
Q2 2020Renaissance Technologies LLCSell-443,300340,268$7,962
Q1 2020Renaissance Technologies LLCBuy63,800783,568$4,568
Q4 2019Renaissance Technologies LLCSell-46,957719,768$4,124
Q3 2019Renaissance Technologies LLCBuy500,705766,725$1,211
Q2 2019Renaissance Technologies LLCBuy91,500266,020$1,077
Q1 2019Renaissance Technologies LLCBuy174,520174,520$918

Frequently asked questions about MRSN activity

  • Which institutional owners are buying MRSN?

    Institutional owners buying MRSN include investors who have either initiated new positions or increased their existing holdings based on recent SEC 13F filings. The activity table above highlights which funds added shares in the latest reporting periods and how their positions changed over time.

  • What does "buy" mean in MRSN activity?

    "Buy" means an investor increased their reported position in MRSN compared to the prior reporting period. This reflects growing exposure to MRSN rather than necessarily a brand-new position (though new positions also appear as buys when prior quantity was zero).

  • Is institutional interest in MRSN increasing?

    Institutional interest in MRSN can be assessed by comparing the number of tracked funds adding or increasing positions versus those trimming or exiting across the periods shown. A higher number of additions typically signals increasing participation among large filers, but it should be read alongside position sizes and the full table.