(MCRB) Stock Institutional Trading Activity


(MCRB) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 2023), investors with some of the largest reported share count changes include Renaissance Technologies LLC and ARK Invest. 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
Q4 2023Renaissance Technologies LLCBuy418,800817,000$1,144
Q1 2023Renaissance Technologies LLCSell-153,300398,200$2,258
Q4 2022Renaissance Technologies LLCBuy12,600551,500$3,088
Q3 2022Renaissance Technologies LLCSell-337,507538,900$3,460
Q2 2022Renaissance Technologies LLCBuy397,007876,407$3,006
Q1 2022Renaissance Technologies LLCSell-267,100479,400$3,413
Q4 2021Renaissance Technologies LLCBuy617,300746,500$6,218
Q2 2021ARK InvestSell-2,142,7879,713,160$231,659
Q1 2021ARK InvestSell-1,885,30711,855,947$244,114
Q1 2021Renaissance Technologies LLCBuy28,200129,200$2,660
Q4 2020ARK InvestBuy1,448,22113,741,254$336,661
Q4 2020Renaissance Technologies LLCSell-275,808101,000$2,475
Q3 2020ARK InvestSell-185,90112,293,033$348,016
Q3 2020Renaissance Technologies LLCSell-1,016,500376,808$10,667
Q2 2020ARK InvestBuy3,831,62312,478,934$59,400
Q2 2020Renaissance Technologies LLCBuy316,5001,393,308$6,632
Q1 2020ARK InvestBuy1,373,4718,647,311$30,871
Q1 2020Renaissance Technologies LLCSell-38,6001,076,808$3,844
Q4 2019ARK InvestBuy198,8757,273,840$25,095
Q4 2019Renaissance Technologies LLCBuy36,2001,115,408$3,848
Q3 2019ARK InvestBuy36,0807,074,965$28,371
Q3 2019Renaissance Technologies LLCBuy35,8001,079,208$4,328
Q2 2019Renaissance Technologies LLCBuy141,2001,043,408$3,360
Q2 2019ARK InvestBuy1,751,1727,038,885$22,665
Q1 2019ARK InvestBuy1,168,2345,287,713$36,327
Q1 2019Renaissance Technologies LLCBuy97,300902,208$6,198
Q4 2018ARK InvestBuy78,7444,119,479$18,620
Q4 2018Renaissance Technologies LLCBuy48,300804,908$3,638
Q3 2018ARK InvestBuy774,3074,040,735$30,669
Q3 2018Renaissance Technologies LLCSell-121,192756,608$5,743

Frequently asked questions about MCRB activity

  • Which institutional owners are buying MCRB?

    Institutional owners buying MCRB 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 MCRB activity?

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

  • Is institutional interest in MCRB increasing?

    Institutional interest in MCRB 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.