Mario Gabelli acquired 178 Thousand Idex shares worth $32.9 Million. That's 0.35% of their equity portfolio (68th largest holding). The first Idex trade was made in Q1 2001. Since then Mario Gabelli bought shares ten more times and sold shares on 82 occasions. The stake costed the investor $4.34 Million, netting the investor a gain of 657% so far.