Aon plc vs Willis Towers Watson
Aon plc (AON) and Willis Towers Watson (WTW) 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
- $274.78
- 12 months
- −23.7%
- Market value
- $31.8B
- Last close
- $297.07
- 12 months
- −11.8%
At a glance
- By market value, Aon plc ($58.3B) is about 1.8 times Willis Towers Watson ($31.8B).
- Over the last 12 months Aon plc's share price moved −23.7% and Willis Towers Watson's −11.8%; against the S&P 500 that is −42.9 points and −29.1 points.
- In their last fiscal years Aon plc kept 21.5% of revenue as net income and Willis Towers Watson 16.5%.
- In the last 90 days insiders reported 6 open-market purchases at Aon plc and 0 at Willis Towers Watson; members of Congress disclosed 1 trade in Aon plc and 0 in Willis Towers Watson.
- Next results: Aon plc Oct 29, 2026, Willis Towers Watson Oct 29, 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 plc AONNYSE · Insurance Brokers | Willis Towers Watson WTWNASDAQ · Insurance Brokers | |
|---|---|---|
| Size and profitability | ||
| Market value | $58.3B | $31.8B |
| Revenue, last fiscal year | $17.2B | $9.71B |
| Net income, last fiscal year | $3.69B | $1.6B |
| Net marginNet income as a share of revenue | 21.5% | 16.5% |
| Free cash flow | $3.22B | $1.55B |
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 plc and Willis Towers Watson compare in size?
Aon plc has the larger market value: Aon plc $58.3B and Willis Towers Watson $31.8B, at the last close.
Whose share price rose more over the last 12 months, AON or WTW?
Over the last 12 months Aon plc moved −23.7% and Willis Towers Watson −11.8%. Past price moves say nothing about the future.
Which has had more insider buying, Aon plc or Willis Towers Watson?
Since 2006, Aon plc insiders reported 45 open-market purchases against 26 for Willis Towers Watson. These are counts of what was filed, not a view on either stock.
Do members of Congress trade AON or WTW?
In the last 12 months, members of Congress disclosed 1 trades in Aon plc (AON) and 0 in Willis Towers Watson (WTW).
When did insiders last buy AON and WTW?
Aon plc: Sep 4, 2026. Willis Towers Watson: May 6, 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 plc pageWillis Towers Watson pageRare insider trades this weekAll comparisons
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