What If You Invested $1,000 in Aon (AON)?
Enter any amount and start date. We use historical prices to show your hypothetical return.
Aon
AON
Historical extremes
Maximum profit (buy at all-time low, sell at peak), maximum drawdown (peak to trough), and total return from IPO to current price.
Max profit
+40736.76% (408.4 times)
- Buy
- Feb 20, 1981
- $1
- Sell
- Mar 3, 2025
- $407.61
Buying AON at the all-time low and selling at the peak would have turned $1,000 into $408,367.63.
Max drawdown
-67.38% (fell to 33% of peak)
- Peak
- Jul 6, 1998
- $32.77
- Trough
- Aug 8, 2002
- $10.69
The worst decline for AON was -67.38% (fell to 33% of peak) from peak to trough.
IPO to current
+30152.70% (302.5 times)
- IPO
- Jun 2, 1980
- $1.08
- Current
- Mar 16, 2026
- $326.75
A $1,000 investment in AON at IPO would be worth $302,527.02 today.
Dollar amounts based on selected investment ($1,000)
Frequently asked questions
What is Aon (AON) stock's all-time high and all-time low?
- Aon (AON) stock's all-time low was $1 on Feb 20, 1981. The all-time high was $407.61 on Mar 3, 2025.
What if you invested $1,000 in Aon (AON) stock at the all-time low?
- Buying Aon (AON) stock at the all-time low ($1 on Feb 20, 1981) and selling at the peak ($407.61 on Mar 3, 2025) would have turned $1,000 into $408,367.63. Historical return: +40736.76% (408.4 times).
What are Aon (AON)'s best buy and sell dates for maximum profit?
- The best buy date for Aon (AON) stock was Feb 20, 1981 (all-time low at $1). The best sell date was Mar 3, 2025 at $407.61. This investment would have returned +40736.76% (408.4 times).
What was Aon (AON) stock's maximum drawdown?
- Aon (AON) stock's worst decline was -67.38% (fell to 33% of peak) from peak to trough. Peak: $32.77 on Jul 6, 1998. Trough: $10.69 on Aug 8, 2002. A $1,000 investment at the peak would have been worth $326.18 at the trough.
What if you bought Aon (AON) stock at IPO?
- A $1,000 investment in Aon (AON) stock at IPO ($1.08 on Jun 2, 1980) would be worth $302,527.02 today. Historical return: +30152.70% (302.5 times). Current stock price: $326.75 as of Mar 16, 2026.
What if you invested $1,000 in Aon (AON) 5 years ago?
- A $1,000 investment in Aon (AON) stock 5 years ago ($218.93 on Mar 16, 2021) would be worth $1,492.46 today. Historical return: +49.25% (1.49 times). Current stock price: $326.75 as of Mar 16, 2026.
What if you invested $1,000 in Aon (AON) 10 years ago?
- A $1,000 investment in Aon (AON) stock 10 years ago ($91.22 on Mar 16, 2016) would be worth $3,582.06 today. Historical return: +258.21% (3.58 times). Current stock price: $326.75 as of Mar 16, 2026.
What if you invested $1,000 in Aon (AON) 20 years ago?
- A $1,000 investment in Aon (AON) stock 20 years ago ($32.81 on Mar 16, 2006) would be worth $9,957.52 today. Historical return: +895.75% (9.96 times). Current stock price: $326.75 as of Mar 16, 2026.
About this data
- How does the investment calculator work?
- Enter an investment amount and a start date. We use historical stock prices to calculate how many shares you would have bought, then apply the current price to show your hypothetical portfolio value and return.
- What are Historical extremes?
- Max profit: buy at all-time low, sell at the highest price after. Max drawdown: the largest peak-to-trough decline in price. IPO to current: total return from IPO date to the latest price.
- What is Max drawdown?
- Maximum drawdown is the largest peak-to-trough decline in price. It shows the worst drop from any prior high to a subsequent low. Peak and Trough are the dates and prices at which this decline occurred.
- Does this include dividends?
- The calculator uses adjusted closing prices when available, which account for stock splits and dividends. For the most accurate results, we recommend using data that includes dividend adjustments.
- Where does the price data come from?
- Historical prices are from Yahoo Finance, adjusted for stock splits and dividends. We use adjusted close for all calculations.
- How are the dollar amounts in the cards calculated?
- The dollar amounts in Historical extremes use the investment amount you select in the calculator above (e.g. $1,000). They show what your investment would have been worth at the Buy/Peak/IPO date versus the Sell/Trough/Current date.
- What date range can I use?
- The available date range depends on our historical price data for AON. You can select any date between our first and most recent data point.