Mario Gabelli's position in Northrop Grumman is currently worth $759 Thousand. That's 0.01% of their equity portfolio (581st largest holding). The first Northrop Grumman trade was made in Q1 2001. Since then Mario Gabelli bought shares nineteen more times and sold shares on 43 occasions. The stake costed the investor $95 Thousand, netting the investor a gain of 699% so far.