Ken Griffin's position in Aon plc. - Ordinary Shares is currently worth $78.6 Million. That's 0.08% of their equity portfolio (312th largest holding). The first Aon plc. - Ordinary Shares trade was made in Q2 2020. Since then Ken Griffin bought shares seven more times and sold shares on six occasions. The stake costed the investor $76.5 Million, netting the investor a gain of 2.7% so far.