Ken Griffin's position in SEI Investments is currently worth $507 Thousand. That's 0.00% of their equity portfolio (3509th largest holding). The first SEI Investments trade was made in Q2 2013. Since then Ken Griffin bought shares 38 more times and sold shares on 34 occasions. The stake costed the investor $499 Thousand, netting the investor a gain of 1.5% so far.