Aon plc drawdown: 26.1% below the all-time high
Aon plc is 26.1% below its all-time high, set Mar 3, 2025 (as of market close, Sep 11, 2026). The chart shows every day as a percentage of the highest level reached up to that point: 100% means a fresh record, everything below is a drawdown.
- Below all-time high
- −26.1%
- 73.9% of ATH
- All-time high
- $409.32
- Mar 3, 2025
- Time below the high
- 1.5 yrs
- since Mar 3, 2025
- Worst-ever drawdown
- −70.7%
- Aug 8, 2002
- Longest underwater
- 9.4 yrs
- between all-time highs
- Today's level first reached
- Oct 14, 2021
- 4.9 yrs ago
- Last time this deep
- Apr 30, 2020
- in a previous episode
% of all-time high since 1984#
The classic underwater chart (drawdown curve), drawn as % of the all-time high — 100% is a fresh record, everything below it is time spent underwater. Basis and range are in the URL, so a particular view is a link.
The deepest drawdowns on record#
Every decline of 15% or more from an all-time high (price basis), deepest first.
| Peak | Trough | Depth | Peak → trough | Recovered by | Underwater |
|---|---|---|---|---|---|
| Jul 6, 1998 | Aug 8, 2002 | −70.7% | 4.1 yrs | Nov 28, 2007 | 9.4 yrs |
| Feb 19, 2020 | Mar 23, 2020 | −38.7% | 33 days | Apr 12, 2021 | 14 mo |
| Dec 27, 1989 | Oct 9, 1990 | −37.6% | 9 mo | Feb 12, 1992 | 2.1 yrs |
| Mar 20, 1986 | Nov 10, 1987 | −37.5% | 1.6 yrs | Apr 18, 1989 | 3.1 yrs |
| Dec 4, 2007 | Oct 27, 2008 | −31.0% | 11 mo | Feb 14, 2011 | 3.2 yrs |
| Apr 7, 2011 | Sep 23, 2011 | −26.2% | 6 mo | Nov 1, 2012 | 1.6 yrs |
| Mar 3, 2025 | Sep 11, 2026 | −26.1% | 1.5 yrs | not yet | 1.5 yrs+ |
| Apr 11, 2022 | Jun 16, 2022 | −25.5% | 2 mo | May 9, 2023 | 13 mo |
Price basis (no dividends) — the convention crash histories use. With dividends reinvested, recoveries arrive years earlier; switch the basis on the chart above to see it.
Drawdown vs what came next#
One dot per month since 1984: how far Aon plc stood below its all-time high, and the total return over the following 1, 5 and 10 years.
Read this with survivorship bias in mind: a single asset's history is one surviving sample, so past recoveries here say little about the odds ahead. Monthly windows also overlap heavily (they are not independent samples). Not investment advice.
FAQ#
- How far is Aon plc from its all-time high?
- Aon plc is currently 26.1% below its all-time high, set Mar 3, 2025 (as of market close, Sep 11, 2026). Prices only, the convention headlines use; with dividends reinvested the gap is usually smaller.
- What was the biggest Aon plc drawdown ever?
- The deepest decline on record in our data (since 1984) took Aon plc 70.7% below its prior high, bottoming Aug 8, 2002. The table on this page lists every major episode with its peak, trough and recovery date.
Methodology & related#
Daily data since -1 from AON; no free deep history exists for Aon plc — for a 150-year drawdown record see the S&P 500 drawdown page. The price basis excludes dividends; the total-return basis reinvests them; the real basis additionally deflates by CPI. See also returns by year. Past performance does not predict future returns; not investment advice.