Mario Gabelli acquired 21.6 Thousand Entegris shares worth $1.65 Million. That's 0.02% of their equity portfolio (488th largest holding). The first Entegris trade was made in Q4 2005. Since then Mario Gabelli bought shares nine more times and sold shares on 28 occasions. The stake costed the investor $112 Thousand, netting the investor a gain of 1369% so far.