Jeremy Grantham acquired 6.9M Lam Research shares worth $2.56B. It makes up 6.08% of their stock portfolio and is their biggest holding. The first Lam Research trade was made in Q4 2015. Since then Jeremy Grantham bought shares twenty more times and sold shares on sixteen occasions. The stake costed the investor $359M, netting the investor a gain of 613% so far.