Mario Gabelli acquired 192 Thousand Idex shares worth $43.1 Million. That's 0.45% of their equity portfolio (53rd largest holding). The first Idex trade was made in Q1 2001. Since then Mario Gabelli bought shares ten more times and sold shares on 78 occasions. The stake costed the investor $4.68 Million, netting the investor a gain of 821% so far.