Ken Griffin's position in IDT Corp. - Ordinary Shares is currently worth $2.53 Million. That's 0.00% of their equity portfolio (2067th largest holding). The first IDT Corp. - Ordinary Shares trade was made in Q2 2013. Since then Ken Griffin bought shares 38 more times and sold shares on 43 occasions. The stake costed the investor $1.9 Million, netting the investor a gain of 33% so far.