Aon vs Brown & Brown: revenue, profit, margins and growth compared
Aon brought in $17.2B of revenue in fiscal 2025, Brown & Brown $5.9B in fiscal 2025. Revenue changed by +9.4% at Aon and +22.8% at Brown & Brown on the year before, so Brown & Brown grew faster. Aon kept 21.5% of its revenue as net profit, Brown & Brown 17.9%. Free cash flow was $3.2B at Aon and $1.4B at Brown & Brown.
Fiscal years as each company reports them; the two may end in different months.
Questions about Aon and Brown & Brown
Which is bigger by revenue, Aon or Brown & Brown?
Aon is bigger by revenue: $17.2B in fiscal 2025, against $5.9B for Brown & Brown in fiscal 2025.
Which keeps more of its revenue as profit, Aon or Brown & Brown?
Aon had a net margin of 21.5% in fiscal 2025; Brown & Brown had 17.9% in fiscal 2025.
Which grew revenue faster, Aon or Brown & Brown?
In their latest fiscal years revenue changed by +9.4% at Aon and +22.8% at Brown & Brown.
Where do these numbers come from?
From the annual reports each company files with the SEC (10-K, or 20-F and 40-F for foreign companies), read from their XBRL data. Margins and growth are simple arithmetic on those figures. Nothing here is a recommendation.