Mario Gabelli's position in Berkshire Hathaway is currently worth $19.9 Million. That's 0.22% of their equity portfolio (137th largest holding). The first Berkshire Hathaway trade was made in Q1 2001. Since then Mario Gabelli bought shares twelve more times and sold shares on seventeen occasions. The stake costed the investor $5.31 Million, netting the investor a gain of 275% so far.