Joel Greenblatt's position in ACI Worldwide is currently worth $314 Thousand. That's 0.01% of their equity portfolio (1088th largest holding). The first ACI Worldwide trade was made in Q2 2011. Since then Joel Greenblatt bought shares seventeen more times and sold shares on sixteen occasions. The stake costed the investor $250 Thousand, netting the investor a gain of 26% so far.