Bill Gates's position in Waste Management is currently worth $5.44 Billion. That's 14.42% of their entire equity portfolio (4th largest holding). The investor owns 8.69% of the outstanding Waste Management stock. The first Waste Management trade was made in Q3 2002. Since then Bill Gates bought shares sixteen more times and sold shares on four occasions. The stake costed the investor $3.04 Billion, netting the investor a gain of 79% so far.