Ken Griffin acquired 3.1 Thousand OSI Systems shares worth $721 Thousand. That's 0.00% of their equity portfolio (3175th largest holding). The first OSI Systems trade was made in Q4 2013. Since then Ken Griffin bought shares 51 more times and sold shares on 55 occasions. The stake costed the investor $353 Thousand, netting the investor a gain of 104% so far.