Jim Simons's position in Aon plc. is currently worth $65.6 Million. That's 0.09% of their equity portfolio (251st largest holding). The first Aon plc. trade was made in Q2 2020. Since then Jim Simons bought shares five more times and sold shares on two occasions. The stake costed the investor $52 Million, netting the investor a gain of 26% so far.