Mario Gabelli's position in A.O. Smith Corp. is currently worth $4.51 Million. That's 0.05% of their equity portfolio (338th largest holding). The first A.O. Smith Corp. trade was made in Q1 2001. Since then Mario Gabelli bought shares twelve more times and sold shares on 39 occasions. The stake costed the investor $2.22 Million, netting the investor a gain of 103% so far.