Joel Greenblatt's position in CIENA is currently worth $323 Thousand. That's 0.01% of their equity portfolio (1086th largest holding). The first CIENA trade was made in Q2 2015. Since then Joel Greenblatt bought shares fifteen more times and sold shares on fifteen occasions. The stake costed the investor $312 Thousand, netting the investor a gain of 3.6% so far.