CSX CORP (CSX) Institutional Ownership Changes & 13F Activity

CSX CORP (CSX) institutional ownership data tracks hedge funds, asset managers, and other institutional investors based on recent SEC 13F filings (Q1 2026). This page analyzes institutional buying and selling activity, new holdings, and sold-out positions among tracked filers. Notable filers include Viking Global Investors, Sound Shore Management, Renaissance Technologies LLC, Sequoia Financial Advisors, and Cullen Value Fund.

Portfolio quarterNameTypeQuantityRemainingReported stock balance
Q1 2021Sequoia Financial AdvisorsSell-1,9192,892$279
Q1 2021Mairs & Power Growth FundSell-7966,414$618
Q4 2020Egerton Capital UKSell-90,0846,545,374$593,993
Q4 2020Sequoia Financial AdvisorsBuy1,1804,811$437
Q3 2020Renaissance Technologies LLCSell-1,240,22329,701$2,307
Q3 2020Sequoia Financial AdvisorsBuy3,6313,631$282
Q3 2020Mairs & Power Growth FundSell-6257,210$560
Q2 2020Renaissance Technologies LLCSell-2,694,2011,269,924$88,564
Q1 2020Viking Global InvestorsBuy844,182844,182$48,372
Q1 2020Renaissance Technologies LLCSell-750,1003,964,125$227,144
Q1 2020Mairs & Power Growth FundSell-2257,835$449
Q4 2019Lone Pine CapitalSell-7,986,68612,000$868
Q4 2019Renaissance Technologies LLCBuy2,102,5194,714,225$341,121
Q4 2019Mairs & Power Growth FundBuy5108,060$583
Q3 2019Renaissance Technologies LLCSell-425,1942,611,706$180,913
Q3 2019Mairs & Power Growth FundSell-4007,550$523
Q2 2019Egerton Capital UKSell-5,505,5226,635,458$513,385
Q2 2019Renaissance Technologies LLCBuy2,231,5003,036,900$234,965
Q1 2019Lone Pine CapitalSell-1,646,7897,998,686$598,462
Q1 2019Egerton Capital UKBuy290,77412,140,980$908,388
Q1 2019Renaissance Technologies LLCSell-205,600805,400$60,260
Q4 2018Egerton Capital UKBuy1,231,45011,850,206$736,253
Q4 2018Lone Pine CapitalBuy215,0009,645,475$599,273
Q4 2018Renaissance Technologies LLCBuy183,9001,011,000$62,813
Q3 2018Lone Pine CapitalSell-3,761,7609,430,475$698,327
Q3 2018Egerton Capital UKBuy3,708,91210,618,756$786,319
Q3 2018Renaissance Technologies LLCBuy714,700827,100$61,247
Q3 2018Mairs & Power Growth FundSell-1,2507,950$589
Q2 2018Egerton Capital UKBuy6,909,8446,909,844$440,710
Q2 2018Lone Pine CapitalSell-178,07213,192,235$841,401

Frequently asked questions about CSX activity

  • Which institutional owners are buying CSX?

    Institutional owners buying CSX 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 CSX activity?

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

  • Is institutional interest in CSX increasing?

    Institutional interest in CSX 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.

Related CSX insights