Jeremy Grantham acquired 3.6 Million Microsoft shares worth $1.51 Billion. It makes up 5.56% of their stock portfolio and is their biggest holding. The first Microsoft trade was made in Q1 2013. Since then Jeremy Grantham bought shares eleven more times and sold shares on 33 occasions. The stake costed the investor $136 Million, netting the investor a gain of 1013% so far.