CSX CORP (CSX) Stock Institutional Trading Activity
CSX CORP (CSX) 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 Third Point, Viking Global Investors, Kahn Brothers Group, Cullen Value Fund, and Sound Shore Management. 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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- CSX CORP (CSX) stock institutional ownership
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| Portfolio quarter | Name | Type | Quantity | Remaining | Reported stock balance |
|---|---|---|---|---|---|
| Q1 2020 | Mairs & Power Growth Fund | Sell | -225 | 7,835 | $449 |
| Q1 2020 | Viking Global Investors | Buy | 844,182 | 844,182 | $48,372 |
| Q1 2020 | Renaissance Technologies LLC | Sell | -750,100 | 3,964,125 | $227,144 |
| Q4 2019 | Lone Pine Capital | Sell | -7,986,686 | 12,000 | $868 |
| Q4 2019 | Renaissance Technologies LLC | Buy | 2,102,519 | 4,714,225 | $341,121 |
| Q4 2019 | Mairs & Power Growth Fund | Buy | 510 | 8,060 | $583 |
| Q3 2019 | Renaissance Technologies LLC | Sell | -425,194 | 2,611,706 | $180,913 |
| Q3 2019 | Mairs & Power Growth Fund | Sell | -400 | 7,550 | $523 |
| Q2 2019 | Renaissance Technologies LLC | Buy | 2,231,500 | 3,036,900 | $234,965 |
| Q2 2019 | Egerton Capital UK | Sell | -5,505,522 | 6,635,458 | $513,385 |
| Q1 2019 | Renaissance Technologies LLC | Sell | -205,600 | 805,400 | $60,260 |
| Q1 2019 | Lone Pine Capital | Sell | -1,646,789 | 7,998,686 | $598,462 |
| Q1 2019 | Egerton Capital UK | Buy | 290,774 | 12,140,980 | $908,388 |
| Q4 2018 | Renaissance Technologies LLC | Buy | 183,900 | 1,011,000 | $62,813 |
| Q4 2018 | Lone Pine Capital | Buy | 215,000 | 9,645,475 | $599,273 |
| Q4 2018 | Egerton Capital UK | Buy | 1,231,450 | 11,850,206 | $736,253 |
| Q3 2018 | Renaissance Technologies LLC | Buy | 714,700 | 827,100 | $61,247 |
| Q3 2018 | Lone Pine Capital | Sell | -3,761,760 | 9,430,475 | $698,327 |
| Q3 2018 | Egerton Capital UK | Buy | 3,708,912 | 10,618,756 | $786,319 |
| Q3 2018 | Mairs & Power Growth Fund | Sell | -1,250 | 7,950 | $589 |
| Q2 2018 | Egerton Capital UK | Buy | 6,909,844 | 6,909,844 | $440,710 |
| Q2 2018 | Lone Pine Capital | Sell | -178,072 | 13,192,235 | $841,401 |
| Q1 2018 | Lone Pine Capital | Buy | 1,986,925 | 13,370,307 | $744,860 |
| Q4 2017 | Gardner Russo & Quinn | Buy | 1,400 | 1,400 | $77 |
| Q4 2017 | Appaloosa Management | Buy | 175,479 | 175,479 | $9,653 |
| Q4 2017 | Lone Pine Capital | Buy | 1,068,514 | 11,383,382 | $626,200 |
| Q3 2017 | Mairs & Power Growth Fund | Buy | 1,000 | 9,200 | $499 |
| Q2 2017 | First Eagle U.S. Value | Buy | 1,337,371 | 2,105,723 | $114,888 |
| Q2 2017 | Lone Pine Capital | Sell | -4,063,555 | 10,314,868 | $562,779 |
| Q2 2017 | Mairs & Power Growth Fund | Sell | -200 | 8,200 | $447 |
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.