Mario Gabelli acquired 189 Thousand Idex shares worth $41.9 Million. That's 0.44% of their equity portfolio (58th largest holding). The first Idex trade was made in Q1 2001. Since then Mario Gabelli bought shares ten more times and sold shares on 79 occasions. The stake costed the investor $4.6 Million, netting the investor a gain of 811% so far.