Ken Griffin acquired 1.8 Million Roku shares worth $113 Million. That's 0.11% of their equity portfolio (207th largest holding). The investor owns 1.53% of the outstanding Roku stock. The first Roku trade was made in Q3 2017. Since then Ken Griffin bought shares 39 more times and sold shares on 33 occasions. The investor's estimated purchase price is $280 Million, resulting in a loss of 60%.