TickerLeague

Aon (AON) Historical Monthly & Quarterly Returns

Dividend-adjusted returns by month and quarter. Compare performance across years.

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Aon

AON

2026

Jan0.9%
Feb3.8%
Mar3.8%
Apr0.1%
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

2025

Jan+3.2%
Feb+10.5%
Mar2.5%
Apr11.1%
May+5.1%
Jun4.1%
Jul0.3%
Aug+3.4%
Sep2.8%
Oct4.5%
Nov+4.1%
Dec0.3%

2024

Jan+2.8%
Feb+5.9%
Mar+5.6%
Apr15.3%
May0.1%
Jun+4.2%
Jul+11.9%
Aug+4.8%
Sep+0.7%
Oct+6.0%
Nov+6.9%
Dec8.3%

2023

Jan+6.4%
Feb4.6%
Mar+3.7%
Apr+3.3%
May5.2%
Jun+12.0%
Jul7.6%
Aug+4.7%
Sep2.7%
Oct4.4%
Nov+6.2%
Dec11.4%

2022

Jan7.9%
Feb+5.7%
Mar+11.5%
Apr11.4%
May4.3%
Jun2.2%
Jul+8.1%
Aug4.0%
Sep4.1%
Oct+5.3%
Nov+9.5%
Dec2.6%

2021

Jan3.7%
Feb+12.1%
Mar+1.1%
Apr+9.5%
May+0.8%
Jun5.8%
Jul+9.1%
Aug+10.3%
Sep0.4%
Oct+12.1%
Nov7.5%
Dec+1.6%

2020

Jan+6.0%
Feb5.6%
Mar20.7%
Apr+4.9%
May+14.1%
Jun2.2%
Jul+6.8%
Aug2.6%
Sep+3.2%
Oct10.6%
Nov+11.3%
Dec+3.1%

2019

Jan+7.8%
Feb+9.8%
Mar0.5%
Apr+5.8%
May0.0%
Jun+7.2%
Jul1.7%
Aug+3.0%
Sep0.7%
Oct+0.0%
Nov+5.4%
Dec+2.3%

2018

Jan+6.4%
Feb1.3%
Mar+0.0%
Apr+1.8%
May1.8%
Jun1.9%
Jul+4.7%
Aug+1.7%
Sep+5.6%
Oct+1.8%
Nov+5.7%
Dec12.0%

2017

Jan+1.3%
Feb+2.6%
Mar+2.6%
Apr+1.3%
May+9.2%
Jun+1.6%
Jul+4.2%
Aug+0.7%
Sep+5.0%
Oct1.6%
Nov2.2%
Dec4.4%

2016

Jan4.4%
Feb+8.5%
Mar+9.6%
Apr+1.0%
May+3.9%
Jun0.0%
Jul1.7%
Aug+4.0%
Sep+1.0%
Oct1.2%
Nov+2.9%
Dec2.2%

2015

Jan4.8%
Feb+11.5%
Mar4.2%
Apr+0.4%
May+5.2%
Jun1.5%
Jul+1.4%
Aug7.3%
Sep5.2%
Oct+5.6%
Nov+1.5%
Dec2.7%

2014

Jan3.9%
Feb+6.4%
Mar1.5%
Apr+1.0%
May+6.0%
Jun+0.2%
Jul6.1%
Aug+3.3%
Sep+0.6%
Oct1.6%
Nov+7.5%
Dec+2.5%

2013

Jan+4.1%
Feb+5.8%
Mar+0.7%
Apr1.6%
May+5.5%
Jun+1.1%
Jul+5.2%
Aug1.7%
Sep+12.1%
Oct+6.5%
Nov+3.2%
Dec+2.8%

2012

Jan+3.8%
Feb3.4%
Mar+4.8%
Apr+5.9%
May10.2%
Jun+0.6%
Jul+5.5%
Aug+5.6%
Sep+0.6%
Oct+3.5%
Nov+5.3%
Dec2.1%

2011

Jan0.3%
Feb+15.1%
Mar+0.6%
Apr1.2%
May0.0%
Jun1.6%
Jul5.9%
Aug2.9%
Sep10.2%
Oct+11.4%
Nov1.4%
Dec+1.8%

2010

Jan+1.9%
Feb+5.2%
Mar+4.3%
Apr0.2%
May7.0%
Jun6.0%
Jul+1.9%
Aug3.8%
Sep+7.9%
Oct+2.0%
Nov+0.9%
Dec+14.7%

2009

Jan18.6%
Feb+3.2%
Mar+6.8%
Apr+3.8%
May14.7%
Jun+5.2%
Jul+4.6%
Aug+5.9%
Sep2.6%
Oct5.0%
Nov+0.6%
Dec1.0%

2008

Jan8.8%
Feb4.0%
Mar3.4%
Apr+13.3%
May+4.0%
Jun2.7%
Jul+0.1%
Aug+3.7%
Sep5.3%
Oct5.5%
Nov+7.1%
Dec+0.8%

2007

Jan+1.9%
Feb+4.9%
Mar+0.9%
Apr+2.5%
May+10.8%
Jun0.7%
Jul5.7%
Aug+8.2%
Sep+3.4%
Oct+1.5%
Nov+10.3%
Dec4.6%

2006

Jan4.4%
Feb+15.7%
Mar+4.8%
Apr+1.3%
May14.9%
Jun2.3%
Jul1.3%
Aug+1.0%
Sep2.0%
Oct+3.2%
Nov+2.6%
Dec1.0%

2005

Jan4.7%
Feb+8.5%
Mar6.8%
Apr8.1%
May+19.6%
Jun+0.4%
Jul+2.2%
Aug+17.6%
Sep+7.3%
Oct+6.0%
Nov+7.6%
Dec1.3%

2004

Jan+2.6%
Feb+7.4%
Mar+6.4%
Apr6.1%
May+6.1%
Jun+3.0%
Jul6.6%
Aug1.9%
Sep+10.7%
Oct28.5%
Nov+3.5%
Dec+13.0%

2003

Jan+0.2%
Feb+3.7%
Mar+6.3%
Apr+7.9%
May+15.8%
Jun6.1%
Jul0.2%
Aug7.1%
Sep6.0%
Oct+5.7%
Nov+0.2%
Dec+9.1%

2002

Jan6.2%
Feb+4.7%
Mar+1.1%
Apr+2.7%
May6.5%
Jun11.8%
Jul18.7%
Aug16.8%
Sep+3.7%
Oct10.5%
Nov+0.3%
Dec+3.6%

2001

Jan+2.6%
Feb1.9%
Mar+3.6%
Apr6.4%
May+6.0%
Jun+0.0%
Jul+1.9%
Aug+4.8%
Sep+13.1%
Oct8.9%
Nov5.8%
Dec0.9%

2000

Jan35.3%
Feb18.0%
Mar+53.1%
Apr15.4%
May+29.8%
Jun11.6%
Jul+16.6%
Aug+3.6%
Sep+5.2%
Oct+6.1%
Nov25.0%
Dec+10.3%

1999

Jan8.4%
Feb+16.8%
Mar+7.3%
Apr+8.8%
May5.8%
Jun4.1%
Jul8.7%
Aug10.9%
Sep11.4%
Oct+20.8%
Nov+0.5%
Dec+12.1%

1998

Jan4.8%
Feb+7.7%
Mar+8.2%
Apr0.4%
May0.2%
Jun+9.6%
Jul3.2%
Aug7.7%
Sep+3.2%
Oct3.4%
Nov7.0%
Dec3.9%

1997

Jan+4.0%
Feb1.4%
Mar3.4%
Apr+9.2%
May+10.0%
Jun+6.1%
Jul+8.2%
Aug8.6%
Sep+3.6%
Oct+2.7%
Nov2.0%
Dec+10.9%

1996

Jan+9.0%
Feb3.7%
Mar0.5%
Apr+4.3%
May6.1%
Jun+0.7%
Jul3.5%
Aug+3.9%
Sep+7.4%
Oct+7.1%
Nov+5.4%
Dec+2.0%

1995

Jan+2.8%
Feb+6.7%
Mar+5.0%
Apr+1.9%
May1.0%
Jun+2.0%
Jul+2.9%
Aug+2.7%
Sep+4.8%
Oct+1.4%
Nov+14.6%
Dec+5.8%

1994

Jan+1.3%
Feb+2.6%
Mar3.7%
Apr2.9%
May+7.7%
Jun+2.3%
Jul0.9%
Aug+3.0%
Sep2.5%
Oct5.8%
Nov+1.6%
Dec+1.2%

1993

Jan4.9%
Feb+0.7%
Mar+10.3%
Apr8.5%
May+1.6%
Jun+1.9%
Jul+2.7%
Aug+2.6%
Sep+0.4%
Oct5.9%
Nov4.8%
Dec2.2%

1992

Jan+6.8%
Feb+2.1%
Mar4.4%
Apr+9.3%
May3.5%
Jun+7.4%
Jul+2.3%
Aug3.4%
Sep+8.3%
Oct+1.6%
Nov+2.8%
Dec+7.1%

1991

Jan4.5%
Feb+6.1%
Mar+6.0%
Apr+0.0%
May+12.1%
Jun7.7%
Jul+2.0%
Aug0.7%
Sep2.3%
Oct+2.9%
Nov2.0%
Dec+7.3%

1990

Jan12.0%
Feb+1.7%
Mar+0.2%
Apr6.9%
May+13.6%
Jun4.5%
Jul2.3%
Aug3.3%
Sep12.1%
Oct+3.7%
Nov+9.6%
Dec+0.6%

1989

Jan+1.8%
Feb+0.5%
Mar+5.5%
Apr+7.1%
May+7.3%
Jun+6.8%
Jul+0.2%
Aug3.1%
Sep1.8%
Oct+4.4%
Nov+9.7%
Dec+8.6%

1988

Jan+1.6%
Feb+13.9%
Mar4.3%
Apr+1.8%
May0.9%
Jun+5.9%
Jul+3.9%
Aug+1.3%
Sep0.5%
Oct+5.6%
Nov3.3%
Dec+1.8%

1987

Jan+12.2%
Feb1.6%
Mar6.2%
Apr6.9%
May0.9%
Jun+4.7%
Jul+7.8%
Aug+7.2%
Sep4.1%
Oct17.0%
Nov+1.0%
Dec2.3%

1986

Jan+4.1%
Feb+12.5%
Mar+4.6%
Apr3.9%
May1.1%
Jun+2.4%
Jul8.8%
Aug+7.6%
Sep7.8%
Oct+4.4%
Nov1.7%
Dec4.3%

1985

Jan+6.0%
Feb+8.9%
Mar0.7%
Apr+1.5%
May+7.7%
Jun+1.0%
Jul2.0%
Aug6.2%
Sep6.3%
Oct+7.5%
Nov+13.9%
Dec+1.6%

1984

Jan13.8%
Feb6.1%
Mar2.5%
Apr+6.2%
May12.6%
Jun+2.2%
Jul7.1%
Aug+19.9%
Sep+6.3%
Oct+6.4%
Nov6.0%
Dec+6.9%

1983

Jan+4.7%
Feb+6.8%
Mar+5.3%
Apr+6.5%
May3.3%
Jun+0.0%
Jul10.7%
Aug+13.1%
Sep+5.3%
Oct+0.0%
Nov+8.7%
Dec+3.8%

1982

Jan6.1%
Feb10.1%
Mar+4.0%
Apr1.6%
May+2.4%
Jun13.8%
Jul+14.3%
Aug+3.9%
Sep+0.0%
Oct+20.3%
Nov+6.3%
Dec0.6%

1981

Jan+0.0%
Feb0.9%
Mar+22.4%
Apr2.3%
May+0.0%
Jun+1.6%
Jul0.8%
Aug3.9%
Sep+2.4%
Oct+2.4%
Nov+6.9%
Dec+5.8%

1980

Jan
Feb
Mar
Apr
May
Jun+5.4%
Jul+2.6%
Aug1.7%
Sep0.8%
Oct4.3%
Nov3.6%
Dec+0.0%

Avg

Jan1.1%
Feb+3.6%
Mar+3.0%
Apr+0.3%
May+2.3%
Jun+0.1%
Jul+0.6%
Aug+1.2%
Sep+0.7%
Oct+1.1%
Nov+2.4%
Dec+1.6%

Median

Jan+1.3%
Feb+4.8%
Mar+1.9%
Apr+1.1%
May+0.8%
Jun+0.5%
Jul+0.8%
Aug+2.2%
Sep+0.5%
Oct+2.2%
Nov+2.9%
Dec+1.4%

Win %

Jan54%
Feb70%
Mar65%
Apr57%
May51%
Jun54%
Jul54%
Aug59%
Sep52%
Oct63%
Nov72%
Dec57%

Frequently asked questions

What is the best performing month for Aon (AON) stock?

Historically, February is the best performing month for Aon (AON) stock with an average return of +3.65%.

What is the worst performing month for Aon (AON) stock?

Historically, January is the worst performing month for Aon (AON) stock with an average return of 1.15%.

What is the best performing quarter for Aon (AON) stock?

Historically, Q4 is the best performing quarter for Aon (AON) stock with an average return of +5.09%.

What is the worst performing quarter for Aon (AON) stock?

Historically, Q2 is the worst performing quarter for Aon (AON) stock with an average return of +2.37%.

What is the best performing year for Aon (AON) stock?

Historically, 1995 is the best performing year for Aon (AON) stock with a return of +61.62%.

What is the worst performing year for Aon (AON) stock?

Historically, 2002 is the worst performing year for Aon (AON) stock with a return of 45.13%.

Which month has the highest win rate for Aon (AON) stock?

Historically, November has the highest win rate for Aon (AON) stock — positive in 72% of years.

Which month has the lowest win rate for Aon (AON) stock?

Historically, May has the lowest win rate for Aon (AON) stock — positive in 51% of years.

Which quarter has the highest win rate for Aon (AON) stock?

Historically, Q1 has the highest win rate for Aon (AON) stock — positive in 76% of years.

Which quarter has the lowest win rate for Aon (AON) stock?

Historically, Q2 has the lowest win rate for Aon (AON) stock — positive in 55% of years.

Data & methodology

How are returns calculated?

We compare the closing price at the end of each period (month or quarter) with the closing price at the end of the previous period. The return is the percentage change. All prices are adjusted for dividends and stock splits. Based on historical prices from our data provider.

What is average vs median?

Average is the arithmetic mean of returns for each period across years. Median is the middle value. Both exclude empty cells. Use median to reduce impact of outliers.

What does the heatmap show?

Green cells indicate positive returns, red cells indicate negative returns. The darker the color, the stronger the move. Average and Median rows summarize each column across years.

What is Win %?

Percentage of years when the period had a positive return. For example, 80% for January means January was positive in 80% of the years in the selected range.