Jim Simons acquired 2.29M Apple shares worth $548M. That's 0.70% of their equity portfolio (17th largest holding). The first Apple trade was made in Q2 2013. Since then Jim Simons bought shares 24 more times and sold shares on nineteen occasions. The stake costed the investor $371M, netting the investor a gain of 48% so far.
Jim Simons was a mathematician-turned-investor who built Renaissance Technologies into the world's second-largest hedge fund.