CANADIAN NATL RAILWAY CO (CNI) Stock Institutional Trading Activity


CANADIAN NATL RAILWAY CO (CNI) 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 TCI Fund Management, Renaissance Technologies LLC, Fairfax Financial Holdings, Cullen Value Fund, and Bill & Melinda Gates Foundation Trust. 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 2021Renaissance Technologies LLCSell-495,40038,200$4,418
Q3 2021Egerton Capital UKBuy2,289,9737,924,388$916,455
Q3 2021Bill & Melinda Gates Foundation TrustSell-841,11413,066,169$1,511,631
Q3 2021TCI Fund ManagementBuy6,592,02236,699,825$4,246,357
Q2 2021Renaissance Technologies LLCBuy99,200533,600$56,286
Q2 2021Viking Global InvestorsSell-5,744,060537,655$56,733
Q2 2021Meritage GroupBuy1,371,7802,091,910$220,601
Q2 2021TCI Fund ManagementBuy9,334,38530,107,803$3,176,525
Q1 2021Renaissance Technologies LLCBuy64,800434,400$50,382
Q1 2021Meritage GroupSell-1,178,285720,130$83,574
Q1 2021Bill & Melinda Gates Foundation TrustSell-3,071,98513,907,283$1,612,967
Q4 2020Renaissance Technologies LLCBuy330,000369,600$40,579
Q4 2020Meritage GroupSell-523,0471,898,415$208,585
Q4 2020Bill & Melinda Gates Foundation TrustSell-147,60616,979,268$1,865,173
Q4 2020TCI Fund ManagementSell-28,84720,773,418$2,282,520
Q3 2020Renaissance Technologies LLCSell-10,20039,600$4,216
Q3 2020TCI Fund ManagementSell-200,10520,802,265$2,214,569
Q2 2020Renaissance Technologies LLCSell-73,70049,800$4,411
Q2 2020Meritage GroupBuy20,5132,421,462$214,059
Q2 2020TCI Fund ManagementBuy90,46921,002,370$1,858,970
Q1 2020Renaissance Technologies LLCSell-427,202123,500$9,587
Q1 2020Meritage GroupBuy6,1612,400,949$187,505
Q1 2020TCI Fund ManagementBuy430,98820,911,901$1,630,758
Q4 2019Renaissance Technologies LLCBuy247,002550,702$49,819
Q4 2019Meritage GroupBuy2,394,7882,394,788$216,638
Q4 2019TCI Fund ManagementBuy1,378,20020,480,913$1,852,238
Q3 2019Renaissance Technologies LLCSell-210,900303,700$27,290
Q3 2019TCI Fund ManagementBuy110,29019,102,713$1,716,468
Q2 2019Renaissance Technologies LLCSell-228,200514,600$47,608
Q2 2019TCI Fund ManagementBuy6,134,88918,992,423$1,757,269

Frequently asked questions about CNI activity

  • Which institutional owners are buying CNI?

    Institutional owners buying CNI 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 CNI activity?

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

  • Is institutional interest in CNI increasing?

    Institutional interest in CNI 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.