What If You Invested $1,000 in Arthur J. Gallagher & (AJG)?
Enter any amount and start date. We use historical prices to show your hypothetical return.
Arthur J. Gallagher &
AJG
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
+59056.07% (591.6 times)
- Buy
- Jun 26, 1984
- $0.59
- Sell
- Jun 2, 2025
- $346.41
Buying AJG at the all-time low and selling at the peak would have turned $1,000 into $591,560.72.
Max drawdown
-57.95% (fell to 42% of peak)
- Peak
- Sep 5, 1986
- $2.81
- Trough
- Feb 17, 1988
- $1.18
The worst decline for AJG was -57.95% (fell to 42% of peak) from peak to trough.
IPO to current
+33625.15% (337.3 times)
- IPO
- Jun 20, 1984
- $0.63
- Current
- Mar 16, 2026
- $211.85
A $1,000 investment in AJG at IPO would be worth $337,251.49 today.
Dollar amounts based on selected investment ($1,000)
Frequently asked questions
What is Arthur J. Gallagher & (AJG) stock's all-time high and all-time low?
- Arthur J. Gallagher & (AJG) stock's all-time low was $0.59 on Jun 26, 1984. The all-time high was $346.41 on Jun 2, 2025.
What if you invested $1,000 in Arthur J. Gallagher & (AJG) stock at the all-time low?
- Buying Arthur J. Gallagher & (AJG) stock at the all-time low ($0.59 on Jun 26, 1984) and selling at the peak ($346.41 on Jun 2, 2025) would have turned $1,000 into $591,560.72. Historical return: +59056.07% (591.6 times).
What are Arthur J. Gallagher & (AJG)'s best buy and sell dates for maximum profit?
- The best buy date for Arthur J. Gallagher & (AJG) stock was Jun 26, 1984 (all-time low at $0.59). The best sell date was Jun 2, 2025 at $346.41. This investment would have returned +59056.07% (591.6 times).
What was Arthur J. Gallagher & (AJG) stock's maximum drawdown?
- Arthur J. Gallagher & (AJG) stock's worst decline was -57.95% (fell to 42% of peak) from peak to trough. Peak: $2.81 on Sep 5, 1986. Trough: $1.18 on Feb 17, 1988. A $1,000 investment at the peak would have been worth $420.45 at the trough.
What if you bought Arthur J. Gallagher & (AJG) stock at IPO?
- A $1,000 investment in Arthur J. Gallagher & (AJG) stock at IPO ($0.63 on Jun 20, 1984) would be worth $337,251.49 today. Historical return: +33625.15% (337.3 times). Current stock price: $211.85 as of Mar 16, 2026.
What if you invested $1,000 in Arthur J. Gallagher & (AJG) 5 years ago?
- A $1,000 investment in Arthur J. Gallagher & (AJG) stock 5 years ago ($121.76 on Mar 16, 2021) would be worth $1,739.94 today. Historical return: +73.99% (1.74 times). Current stock price: $211.85 as of Mar 16, 2026.
What if you invested $1,000 in Arthur J. Gallagher & (AJG) 10 years ago?
- A $1,000 investment in Arthur J. Gallagher & (AJG) stock 10 years ago ($36.53 on Mar 16, 2016) would be worth $5,798.89 today. Historical return: +479.89% (5.80 times). Current stock price: $211.85 as of Mar 16, 2026.
What if you invested $1,000 in Arthur J. Gallagher & (AJG) 20 years ago?
- A $1,000 investment in Arthur J. Gallagher & (AJG) stock 20 years ago ($15.94 on Mar 16, 2006) would be worth $13,289.02 today. Historical return: +1228.90% (13.3 times). Current stock price: $211.85 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 AJG. You can select any date between our first and most recent data point.