BANK OF MONTREAL (BMO) Stock Institutional Trading Activity


BANK OF MONTREAL (BMO) 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, Sequoia Financial Advisors, Mairs & Power Growth Fund, and Vulcan Value Partners. 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
Q3 2020Renaissance Technologies LLCSell-305,132226,795$13,254
Q2 2020Renaissance Technologies LLCBuy497,732531,927$28,265
Q1 2020Renaissance Technologies LLCSell-416,50534,195$1,719
Q4 2019Renaissance Technologies LLCBuy137,255450,700$34,949
Q3 2019Renaissance Technologies LLCSell-135,505313,445$23,114
Q2 2019Renaissance Technologies LLCSell-135,500448,950$33,900
Q1 2019Renaissance Technologies LLCSell-502,895584,450$43,734
Q4 2018Renaissance Technologies LLCBuy633,1501,087,345$71,089
Q3 2018Renaissance Technologies LLCSell-25,300454,195$37,485
Q1 2018Renaissance Technologies LLCSell-431,600479,495$36,235
Q4 2017Renaissance Technologies LLCBuy263,900911,095$73,010
Q3 2017Renaissance Technologies LLCSell-99,400647,195$48,999
Q2 2017Renaissance Technologies LLCSell-158,700746,595$54,830
Q1 2017Renaissance Technologies LLCBuy338,600905,295$67,699
Q4 2016Renaissance Technologies LLCBuy207,000566,695$40,756
Q3 2016Renaissance Technologies LLCBuy246,895359,695$23,585
Q2 2016Renaissance Technologies LLCSell-134,900112,800$7,150
Q2 2016Mairs & Power Growth FundSell-3013,573$226
Q1 2016Renaissance Technologies LLCBuy201,700247,700$15,042
Q1 2016Mairs & Power Growth FundSell-2003,874$235
Q4 2015Renaissance Technologies LLCSell-398,69546,000$2,597
Q4 2015Mairs & Power Growth FundSell-7004,074$230
Q3 2015Renaissance Technologies LLCBuy26,100444,695$24,258
Q3 2015Mairs & Power Growth FundSell-1,3764,774$260
Q2 2015Renaissance Technologies LLCSell-436,500418,595$24,814
Q2 2015Mairs & Power Growth FundSell-596,150$365
Q1 2015Renaissance Technologies LLCBuy461,800855,095$51,280
Q1 2015Mairs & Power Growth FundSell-6276,209$372
Q4 2014Renaissance Technologies LLCBuy77,400393,295$27,818
Q4 2014Mairs & Power Growth FundBuy2006,836$484

Frequently asked questions about BMO activity

  • Which institutional owners are buying BMO?

    Institutional owners buying BMO 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 BMO activity?

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

  • Is institutional interest in BMO increasing?

    Institutional interest in BMO 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.