Jeremy Grantham acquired 3.92 Million Microsoft shares worth $1.6 Billion. That's 5.11% of their entire equity portfolio (2nd largest holding). The first Microsoft trade was made in Q1 2013. Since then Jeremy Grantham bought shares thirteen more times and sold shares on 34 occasions. The stake costed the investor $156 Million, netting the investor a gain of 922% so far.