Mario Gabelli acquired 2.77 Million Aerojet Rocketdyne Holdings shares worth $118 Million. That's 1.15% of their equity portfolio (9th largest holding). The investor owns 3.54% of the outstanding Aerojet Rocketdyne Holdings stock. The first Aerojet Rocketdyne Holdings trade was made in Q2 2015. Since then Mario Gabelli bought shares three more times and sold shares on 25 occasions. The stake costed the investor $62.2 Million, netting the investor a gain of 89% so far.