Jeremy Grantham's position in MerckInc is currently worth $585 Million. That's 1.97% of their equity portfolio (17th largest holding). The first MerckInc trade was made in Q1 2013. Since then Jeremy Grantham bought shares 23 more times and sold shares on twenty occasions. The stake costed the investor $427 Million, netting the investor a gain of 37% so far.