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 2018Lone Pine CapitalBuy1,986,92513,370,307$744,860
Q4 2017Lone Pine CapitalBuy1,068,51411,383,382$626,200
Q4 2017Appaloosa ManagementBuy175,479175,479$9,653
Q4 2017Gardner Russo & QuinnBuy1,4001,400$77
Q3 2017Mairs & Power Growth FundBuy1,0009,200$499
Q2 2017Lone Pine CapitalSell-4,063,55510,314,868$562,779
Q2 2017First Eagle U.S. ValueBuy1,337,3712,105,723$114,888
Q2 2017Mairs & Power Growth FundSell-2008,200$447
Q1 2017Lone Pine CapitalBuy12,290,12314,378,423$669,316
Q1 2017First Eagle U.S. ValueSell-1,098,907768,352$35,767
Q1 2017Renaissance Technologies LLCSell-1,024,900112,400$5,232
Q1 2017Akre Capital ManagementSell-33,8824,899$228
Q1 2017Mairs & Power Growth FundBuy8,4008,400$391
Q1 2017Fairfax Financial HoldingsBuy5,20015,000$698
Q4 2016Causeway Capital ManagementSell-716,3714,384,375$184,986
Q4 2016Meritage GroupBuy45,62245,622$1,639
Q3 2016Causeway Capital ManagementBuy2,278,8885,100,746$174,997
Q1 2016Fairfax Financial HoldingsBuy2,2009,800$252
Q1 2016Akre Capital ManagementSell-1,91438,781$999
Q4 2015First Eagle U.S. ValueBuy1,867,2591,867,259$48,455
Q4 2015Atlantic Investment ManagementSell-149,075302,463$7,849
Q3 2015Atlantic Investment ManagementBuy451,538451,538$12,146
Q3 2015Renaissance Technologies LLCBuy275,1001,137,300$30,593
Q2 2015Lone Pine CapitalBuy2,088,3002,088,300$68,183
Q2 2015Akre Capital ManagementBuy10,75040,695$1,329
Q1 2015Renaissance Technologies LLCBuy130,700862,200$28,556
Q1 2015Akre Capital ManagementSell-12,95429,945$1,081
Q4 2014Causeway Capital ManagementSell-945,3932,821,858$114,171
Q4 2014Disciplined Growth InvestorsBuy6,2046,204$225
Q3 2014Causeway Capital ManagementBuy34,8003,767,251$131,100

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.

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