MIDDLEFIELD BANC CORP (MBCN) Stock Institutional Trading Activity


MIDDLEFIELD BANC CORP (MBCN) position changes reported by tracked institutional filers across multiple SEC 13F reporting periods. Based on recent SEC 13F filings (Q4 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
Q4 2025Renaissance Technologies LLCSell-2,90033,212$1,147,142
Q3 2025Renaissance Technologies LLCSell-90036,112$1,083,721
Q2 2025Renaissance Technologies LLCSell-10037,012$1,114,431
Q1 2025Renaissance Technologies LLCSell-50037,112$1,037,280
Q4 2024Renaissance Technologies LLCSell-2,20037,612$1,055,017
Q3 2024Renaissance Technologies LLCSell-10039,812$1,146,586
Q2 2024Renaissance Technologies LLCBuy30039,912$959,884
Q1 2024Renaissance Technologies LLCBuy10039,612$946
Q4 2023Renaissance Technologies LLCSell-30039,512$1,279
Q3 2023Renaissance Technologies LLCBuy10039,812$1,012
Q2 2023Renaissance Technologies LLCSell-30039,712$1,064
Q1 2023Renaissance Technologies LLCSell-9,10040,012$1,121
Q4 2022Renaissance Technologies LLCSell-4,90149,112$1,346
Q3 2022Renaissance Technologies LLCSell-17,29954,013$1,464
Q2 2022Renaissance Technologies LLCSell-12,20071,312$1,797
Q1 2022Renaissance Technologies LLCSell-10,70083,512$2,073
Q4 2021Renaissance Technologies LLCBuy13,48794,212$2,336
Q3 2021Renaissance Technologies LLCSell-7,28780,725$1,923
Q2 2021Renaissance Technologies LLCBuy6,20088,012$2,077
Q1 2021Renaissance Technologies LLCBuy15,98881,812$1,715
Q4 2020Renaissance Technologies LLCSell-1,28865,824$1,481
Q3 2020Renaissance Technologies LLCSell-10,82867,112$1,295
Q2 2020Renaissance Technologies LLCSell-17,87277,940$1,617
Q1 2020Renaissance Technologies LLCBuy7,80095,812$1,515
Q4 2019Renaissance Technologies LLCBuy45,80388,012$2,296
Q3 2019Renaissance Technologies LLCSell-2,61842,209$1,975
Q2 2019Renaissance Technologies LLCBuy21,27244,827$1,838
Q1 2019Renaissance Technologies LLCBuy1,00023,555$971
Q4 2018Renaissance Technologies LLCSell-39822,555$957
Q3 2018Renaissance Technologies LLCBuy18,45322,953$1,081

Frequently asked questions about MBCN activity

  • Which institutional owners are buying MBCN?

    Institutional owners buying MBCN 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 MBCN activity?

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

  • Is institutional interest in MBCN increasing?

    Institutional interest in MBCN 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.