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
Q1 2019Sequoia Financial AdvisorsSell-5022,434$218
Q1 2019Renaissance Technologies LLCSell-601,600742,800$66,466
Q1 2019TCI Fund ManagementBuy2,137,05112,857,534$1,151,538
Q4 2018Renaissance Technologies LLCBuy693,4541,344,400$99,687
Q4 2018TCI Fund ManagementBuy8,948,48310,720,483$794,635
Q3 2018Sequoia Financial AdvisorsSell-6462,936$264
Q3 2018Renaissance Technologies LLCSell-684,354650,946$58,453
Q3 2018TCI Fund ManagementBuy1,772,0001,772,000$159,088
Q2 2018Sequoia Financial AdvisorsBuy3883,582$293
Q1 2018Renaissance Technologies LLCBuy567,4001,335,300$97,650
Q4 2017Gardner Russo & QuinnBuy200200$17
Q4 2017Sequoia Financial AdvisorsSell-723,194$264
Q4 2017Renaissance Technologies LLCBuy735,300767,900$63,352
Q3 2017Renaissance Technologies LLCSell-73,60032,600$2,701
Q1 2017Sequoia Financial AdvisorsSell-303,266$241
Q4 2016Sequoia Financial AdvisorsSell-1083,296$222
Q4 2016Renaissance Technologies LLCSell-41,800106,200$7,158
Q3 2016Sequoia Financial AdvisorsBuy3,2003,404$223
Q3 2016Renaissance Technologies LLCSell-122,800148,000$9,679
Q2 2016Renaissance Technologies LLCSell-5,300270,800$15,977
Q1 2016Sequoia Financial AdvisorsSell-4,350204$3,268
Q1 2016Renaissance Technologies LLCBuy215,700276,100$17,246
Q4 2015Sequoia Financial AdvisorsBuy9214,554$314
Q4 2015Renaissance Technologies LLCSell-137,10060,400$3,375
Q3 2015Sequoia Financial AdvisorsSell-2903,633$206
Q3 2015Renaissance Technologies LLCSell-1,255,300197,500$11,210
Q2 2015Renaissance Technologies LLCBuy1,328,7001,452,800$83,899
Q1 2015Sequoia Financial AdvisorsSell-6313,923$262
Q1 2015Renaissance Technologies LLCSell-206,600124,100$8,299
Q1 2015Egerton Capital UKSell-100,2105,634,415$376,773

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.