Aon plc. Profit Margin

As of the most recent data (September 2026), AON shows a profit margin of 22.24%. That compares with 16.03% in the prior-year period — up 38.7% year over year. That is below the Finance sector average of 25.78%. Scroll down for historical charts and peer comparison views.

Compared with the year-ago period, AON's profit margin is now 22.24% (was 16.03%) — a 38.7% year-over-year increase. Pairing that YoY change with peer averages gives a clearer picture of whether Aon plc. is outperforming or lagging.

The Finance sector average profit margin is about 25.78%. Aon plc. is at 22.24%, which is lower that average. That is roughly 13.7% below the sector mean. Use the comparison chart on this page to see how AON stacks up against individual peers as well.

That compares with 16.03% in the prior-year period — up 38.7% year over year. Improvement over multiple periods is generally more meaningful than a single strong quarter. Compare Aon plc. with peers to see if the move is company-specific or sector-wide.

Besides this profit margin page, Stockcircle has Aon plc.'s full stock overview, other financial metrics, insider and congress trade tabs, and tools to follow the stock. Together they help you connect profit margin (currently 22.24%) with ownership activity and broader fundamentals.