Ken Griffin acquired 4.85M O`Reilly Automotive shares worth $421M. That's 0.27% of their equity portfolio (57th largest holding). The first O`Reilly Automotive trade was made in Q2 2013. Since then Ken Griffin bought shares 62 more times and sold shares on 64 occasions. The stake costed the investor $162M, netting the investor a gain of 160% so far.