Mario Gabelli acquired 15.7 Thousand Boston Beer , Inc. shares worth $3.81 Million. That's 0.04% of their equity portfolio (361st largest holding). The first Boston Beer , Inc. trade was made in Q2 2002. Since then Mario Gabelli bought shares 25 more times and sold shares on 58 occasions. The stake costed the investor $630 Thousand, netting the investor a gain of 505% so far.