Jim Simons acquired 605 Thousand Interactive Brokers Group shares worth $112 Million. That's 0.17% of their equity portfolio (128th largest holding). The first Interactive Brokers Group trade was made in Q2 2013. Since then Jim Simons bought shares twenty more times and sold shares on twenty occasions. The stake costed the investor $51.9 Million, netting the investor a gain of 115% so far.