Ken Griffin acquired 52.1 Thousand O`Reilly Automotive shares worth $50.2 Million. That's 0.05% of their equity portfolio (449th largest holding). The first O`Reilly Automotive trade was made in Q2 2013. Since then Ken Griffin bought shares 52 more times and sold shares on 50 occasions. The stake costed the investor $19 Million, netting the investor a gain of 165% so far.