Andreas Halvorsen acquired 18.9M CSX shares worth $616M. That's 1.72% of their equity portfolio (23rd largest holding). The investor owns 1.02% of the outstanding CSX stock. The first CSX trade was made in Q1 2020. Since then Andreas Halvorsen bought shares eight more times and sold shares on four occasions. The stake costed the investor $596M, netting the investor a gain of 3.4% so far.