Jeremy Grantham acquired 6.23M Amazon.com shares worth $1.46B. That's 3.46% of their equity portfolio (8th largest holding). The first Amazon.com trade was made in Q1 2013. Since then Jeremy Grantham bought shares 21 more times and sold shares on 23 occasions. The stake costed the investor $995M, netting the investor a gain of 47% so far.