Mario Gabelli acquired 18.1 Thousand Graham Holdings shares worth $13.8 Million. That's 0.14% of their equity portfolio (179th largest holding). The first Graham Holdings trade was made in Q1 2014. Since then Mario Gabelli bought shares sixteen more times and sold shares on 24 occasions. The stake costed the investor $9.42 Million, netting the investor a gain of 46% so far.