Jim Simons's position in Roku is currently worth $197M. That's 0.27% of their equity portfolio (63rd largest holding). The investor owns 1.02% of the outstanding Roku stock. The first Roku trade was made in Q3 2018. Since then Jim Simons bought shares fourteen more times and sold shares on thirteen occasions. The stake costed the investor $133M, netting the investor a gain of 48% so far.