Jeremy Grantham acquired 4.43 Million Amazon.com shares worth $563 Million. That's 2.72% of their equity portfolio (5th largest holding). The first Amazon.com trade was made in Q1 2013. Since then Jeremy Grantham bought shares sixteen more times and sold shares on seventeen occasions. The stake costed the investor $514 Million, netting the investor a gain of 9.4% so far.