Joel Greenblatt's position in Westinghouse Air Brake Technologies is currently worth $3.7 Million. That's 0.04% of their equity portfolio (548th largest holding). The first Westinghouse Air Brake Technologies trade was made in Q3 2011. Since then Joel Greenblatt bought shares nineteen more times and sold shares on 23 occasions. The stake costed the investor $3.14 Million, netting the investor a gain of 18% so far.