Aon vs Brown & Brown
Aon (AON) and Brown & Brown (BRO) side by side: how big they are, what they earn, how their shares have moved and what insiders, members of Congress and funds reported. Figures from filings and closing prices; none of this is a view on either stock.
- Market value
- $58.3B
- Last close
- $274.71
- 12 months
- −22.3%
- Market value
- $21.4B
- Last close
- $64.05
- 12 months
- −32.2%
At a glance
- By market value, Aon ($58.3B) is about 2.7 times Brown & Brown ($21.4B).
- Over the last 12 months Aon's share price moved −22.3% and Brown & Brown's −32.2%; against the S&P 500 that is −39.6 points and −49.5 points.
- In their last fiscal years Aon kept 21.5% of revenue as net income and Brown & Brown 17.9%.
- In the last 90 days insiders reported 6 open-market purchases at Aon and 0 at Brown & Brown; members of Congress disclosed 1 trade in Aon and 2 in Brown & Brown.
- Next results: Aon Oct 29, 2026, Brown & Brown Oct 26, 2026.
Share price over the last 12 months
Face to face
The figures that separate the two, drawn to the same scale. Every figure is also in the table below.
Size
Market value
Revenue, last fiscal year
Net income, last fiscal year
Every figure
| Aon AONNYSE · Insurance Brokers | Brown & Brown BRONYSE · Insurance Brokers | |
|---|---|---|
| Size and profitability | ||
| Market value | $58.3B | $21.4B |
| Revenue, last fiscal year | $17.2B | $5.9B |
| Net income, last fiscal year | $3.69B | $1.05B |
| Net marginNet income as a share of revenue | 21.5% | 17.9% |
| Free cash flow | $3.22B | $1.38B |
Prices are end-of-day closes, and fundamentals are the companies' last annual figures from their SEC filings: a − or + in the table is a fact of the filing or the close, not a forecast. Market value is the company-level figure at the last close. Counts are of records OQRO holds, by their date; insider history since 2006 comes from the SEC's insider transactions data sets and every filing since. Planned sales under a 10b5-1 plan are counted like other sales.
Compare with another company
Common questions
How do Aon and Brown & Brown compare in size?
Aon has the larger market value: Aon $58.3B and Brown & Brown $21.4B, at the last close.
Whose share price rose more over the last 12 months, AON or BRO?
Over the last 12 months Aon moved −22.3% and Brown & Brown −32.2%. Past price moves say nothing about the future.
Which has had more insider buying, Aon or Brown & Brown?
Since 2006, Aon insiders reported 45 open-market purchases against 44 for Brown & Brown. These are counts of what was filed, not a view on either stock.
Do members of Congress trade AON or BRO?
In the last 12 months, members of Congress disclosed 1 trades in Aon (AON) and 24 in Brown & Brown (BRO).
When did insiders last buy AON and BRO?
Aon: Sep 4, 2026. Brown & Brown: Jun 10, 2026.
See the record behind any of these
Each company page opens free with one real filing and the counts of the last 12 months. OQRO Pro adds the full history of every insider and company since 2006, the screener, alerts, Congress trades and fund moves.
Aon pageBrown & Brown pageRare insider trades this weekAll comparisons
https://oqro.io/compare/aon-vs-bro
