Joel Greenblatt's position in Union Pacific is currently worth $11.9 Million. That's 0.12% of their equity portfolio (223rd largest holding). The first Union Pacific trade was made in Q4 2010. Since then Joel Greenblatt bought shares 24 more times and sold shares on 29 occasions. The stake costed the investor $6.43 Million, netting the investor a gain of 86% so far.