Ken Griffin's position in Patterson-UTI Energy is currently worth $117 Million. That's 0.12% of their equity portfolio (189th largest holding). The investor owns 2.89% of the outstanding Patterson-UTI Energy stock. The first Patterson-UTI Energy trade was made in Q2 2013. Since then Ken Griffin bought shares 56 more times and sold shares on 45 occasions. The investor's estimated purchase price is $213 Million, resulting in a loss of 45%.