Diamond Hill Capital's AON Position Overview
Diamond Hill Capital (via Diamond Hill Capital Management INC) currently holds 1.6M shares of Aon plc (AON) worth $557.63 M, representing 2.65% of the portfolio. First purchased in 2024-Q3, this short-term holding has been held for 5 quarters.
Based on 13F filings, Diamond Hill Capital has maintained this position in AON for several quarters, showing initial confidence in the investment. Largest addition occurred in Q2 2025, adding 361.9K shares. Largest reduction occurred in Q1 2025, reducing 35.1K shares.
Analysis based on 13F filings available since 2013 Q2
Diamond Hill Capital's Aon plc (AON) Holding Value Over Time
Track share changes against reported price movement
Quarterly Aon plc (AON) Trades by Diamond Hill Capital
| Period | Bought/Sold (Sh.) | % Change | Qtr. End Shares | Reported Price |
|---|---|---|---|---|
| Q3 2024 | +972,211 | New Buy | 972,211 | $345.99 |
| Q4 2024 | +275,525 | Add 28.34% | 1.25 M | $359.16 |
| Q1 2025 | -35,137 | Reduce 2.82% | 1.21 M | $399.09 |
| Q2 2025 | +361,912 | Add 29.85% | 1.57 M | $356.76 |
| Q3 2025 | -10,690 | Reduce 0.68% | 1.56 M | $356.58 |
Diamond Hill Capital's Aon plc Investment FAQs
Diamond Hill Capital first purchased Aon plc (AON) in Q3 2024, acquiring 972,211 shares, as reported in their 13F filing for that period. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Diamond Hill Capital has held Aon plc (AON) for 5 quarters since Q3 2024. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Diamond Hill Capital's largest addition to Aon plc (AON) was in Q3 2024, adding 972,211 shares worth $336.38 M. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
According to the latest 13F filing for Q3 2025, Diamond Hill Capital's firm, Diamond Hill Capital Management INC, owns 1,563,821 shares of Aon plc (AON), valued at approximately $557.63 M. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
As of the Q3 2025 filing, Aon plc (AON) represents approximately 2.65% of Diamond Hill Capital's publicly disclosed stock portfolio, making it one of their key holdings. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.
Diamond Hill Capital's peak holding in Aon plc (AON) was 1,574,511 shares, as reported at the end of Q2 2025. Note: Analysis reflects filings available since Q2 2013; earlier records may be incomplete.