Mario Gabelli's position in Patterson-UTI Energy is currently worth $539 Thousand. That's 0.01% of their equity portfolio (632nd largest holding). The first Patterson-UTI Energy trade was made in Q4 2010. Since then Mario Gabelli bought shares 30 more times and sold shares on 21 occasions. The investor's estimated purchase price is $1.17 Million, resulting in a loss of 54%.