Mario Gabelli acquired 11.4 Thousand Boston Beer , Inc. shares worth $3.3 Million. That's 0.04% of their equity portfolio (385th largest holding). The first Boston Beer , Inc. trade was made in Q2 2002. Since then Mario Gabelli bought shares 22 more times and sold shares on 57 occasions. The stake costed the investor $436 Thousand, netting the investor a gain of 656% so far.