Joel Greenblatt acquired 3.68 Thousand Biogen shares worth $725 Thousand. That's 0.01% of their equity portfolio (853rd largest holding). The first Biogen trade was made in Q4 2010. Since then Joel Greenblatt bought shares nineteen more times and sold shares on 24 occasions. The investor's estimated purchase price is $978 Thousand, resulting in a loss of 26%.