Mario Gabelli's position in Watts Water Technologies is currently worth $97.9 Million. That's 0.95% of their equity portfolio (16th largest holding). The investor owns 2.38% of the outstanding Watts Water Technologies stock. The first Watts Water Technologies trade was made in Q1 2001. Since then Mario Gabelli bought shares 22 more times and sold shares on 73 occasions. The stake costed the investor $18.2 Million, netting the investor a gain of 439% so far.