Mario Gabelli acquired 127 Thousand Microsoft shares worth $55.5 Million. That's 0.60% of their equity portfolio (35th largest holding). The first Microsoft trade was made in Q1 2001. Since then Mario Gabelli bought shares 30 more times and sold shares on 62 occasions. The stake costed the investor $3.67 Million, netting the investor a gain of 1412% so far.