Mario Gabelli's position in Waste Management is currently worth $36.9 Million. That's 0.39% of their equity portfolio (67th largest holding). The first Waste Management trade was made in Q1 2001. Since then Mario Gabelli bought shares 25 more times and sold shares on 64 occasions. The stake costed the investor $5.86 Million, netting the investor a gain of 530% so far.