Jeremy Grantham's position in Regeneron Pharmaceuticals is currently worth $60.5 Million. That's 0.26% of their equity portfolio (66th largest holding). The first Regeneron Pharmaceuticals trade was made in Q1 2013. Since then Jeremy Grantham bought shares twelve more times and sold shares on six occasions. The stake costed the investor $41.7 Million, netting the investor a gain of 45% so far.