Mario Gabelli's position in A.O. Smith is currently worth $4.78 Million. That's 0.05% of their equity portfolio (345th largest holding). The first A.O. Smith trade was made in Q1 2001. Since then Mario Gabelli bought shares eleven more times and sold shares on 45 occasions. The stake costed the investor $1.49 Million, netting the investor a gain of 221% so far.