Marsh & McLennan Companies (MRSH) seasonality heatmap
Returns across monthly, quarterly, and yearly periods. Cell color encodes signed magnitude; the scale auto-fits each table.
| Year | Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026 | +2.0% | -0.8% | -7.1% | -3.3% | -4.6% | +5.4% | — | — | — | — | — | — |
| 2025 | +2.5% | +9.7% | +2.6% | -7.3% | +3.6% | -6.4% | -8.5% | +3.3% | -2.1% | -11.2% | +3.0% | +1.1% |
| 2024 | +2.7% | +4.3% | +1.8% | -2.8% | +4.1% | +1.5% | +6.0% | +2.2% | -1.9% | -1.8% | +6.9% | -8.9% |
| 2023 | +6.1% | -7.3% | +2.7% | +8.6% | -3.9% | +8.6% | +0.5% | +3.5% | -2.4% | +0.0% | +5.2% | -5.0% |
| 2022 | -11.3% | +1.2% | +9.7% | -4.8% | -1.1% | -2.9% | +6.0% | -1.6% | -7.5% | +8.6% | +7.2% | -4.4% |
| 2021 | -5.7% | +4.8% | +5.7% | +11.8% | +2.0% | +1.7% | +5.0% | +6.8% | -3.7% | +10.5% | -1.7% | +6.0% |
| 2020 | +0.8% | -6.5% | -17.3% | +13.2% | +8.8% | +1.4% | +9.0% | -1.5% | -0.2% | -9.4% | +10.8% | +2.1% |
| 2019 | +11.1% | +5.5% | +0.9% | +0.9% | +1.4% | +4.3% | -0.5% | +1.1% | +0.2% | +4.1% | +4.3% | +3.1% |
| 2018 | +3.1% | -0.6% | -0.5% | -0.9% | -1.4% | +2.0% | +2.2% | +1.5% | -2.3% | +3.0% | +4.7% | -10.1% |
| 2017 | +0.6% | +8.0% | +0.6% | +0.8% | +4.6% | +0.5% | +0.5% | +0.1% | +7.3% | -3.0% | +3.7% | -3.0% |
| 2016 | -3.2% | +7.0% | +6.6% | +4.4% | +4.6% | +3.6% | -3.5% | +2.9% | -0.6% | -5.3% | +9.3% | -2.5% |
| 2015 | -5.6% | +5.8% | -1.4% | +0.6% | +3.7% | -2.6% | +2.7% | -7.3% | -2.8% | +7.4% | -0.8% | +0.3% |
| 2014 | -5.0% | +5.4% | +2.4% | +0.5% | +1.9% | +3.1% | -1.5% | +4.6% | -1.4% | +4.4% | +4.1% | +1.2% |
| 2013 | +3.6% | +4.7% | +2.2% | +0.7% | +5.3% | -0.3% | +5.5% | -1.5% | +5.6% | +5.8% | +3.6% | +1.9% |
| 2012 | +0.6% | -1.2% | +5.1% | +2.7% | -4.4% | +0.8% | +3.7% | +2.9% | -0.7% | +1.0% | +3.5% | -2.1% |
| 2011 | +2.7% | +9.2% | -2.1% | +2.3% | +1.3% | +1.7% | -4.8% | +0.8% | -10.6% | +16.3% | -1.4% | +4.7% |
| 2010 | -1.4% | +7.7% | +5.2% | +0.0% | -9.9% | +3.4% | +5.3% | +0.9% | +1.7% | +4.5% | +0.4% | +9.0% |
| 2009 | -19.6% | -7.2% | +13.0% | +5.2% | -10.3% | +6.4% | +2.5% | +15.2% | +5.1% | -4.3% | -3.9% | -2.1% |
| 2008 | +4.8% | -7.6% | -4.4% | +14.2% | -1.3% | -2.5% | +7.2% | +13.0% | -0.5% | -7.1% | -12.9% | -4.9% |
| 2007 | -3.2% | -0.3% | -0.5% | +9.1% | +3.4% | -5.9% | -10.2% | -3.3% | -4.3% | +2.2% | -3.0% | +5.4% |
| 2006 | -3.8% | +1.7% | -5.0% | +5.1% | -8.6% | -4.1% | +1.1% | -3.2% | +7.6% | +5.2% | +6.7% | -2.4% |
| 2005 | -1.2% | +0.4% | -6.3% | -7.3% | +3.6% | -4.6% | +5.3% | -3.2% | +8.4% | -3.5% | +6.0% | +2.8% |
| 2004 | -2.0% | +2.3% | -3.5% | -1.9% | -2.2% | +2.9% | -1.5% | +0.7% | +2.4% | -39.1% | +3.4% | +15.1% |
| 2003 | -7.2% | -4.6% | +4.8% | +12.5% | +5.2% | +1.9% | -2.3% | +0.8% | -4.8% | -9.6% | +4.0% | +8.4% |
| 2002 | -4.7% | +3.6% | +6.8% | -9.9% | -0.2% | -4.3% | -0.2% | +1.6% | -14.4% | +13.0% | +1.0% | -2.1% |
| 2001 | -7.2% | -1.0% | -11.2% | +2.0% | +8.7% | -3.7% | -0.1% | -7.5% | +4.1% | +0.6% | +10.6% | +0.4% |
| 2000 | -1.2% | -17.7% | +42.6% | -10.3% | +11.7% | -5.1% | +17.3% | -2.7% | +11.8% | -1.1% | -12.0% | +1.7% |
| 1999 | +8.3% | +12.7% | +4.8% | +3.7% | -5.0% | +4.0% | +1.0% | -4.2% | -5.9% | +16.2% | -0.5% | +21.7% |
| 1998 | -0.2% | +17.3% | +0.7% | +5.0% | -3.9% | +3.6% | +1.7% | -20.8% | +3.0% | +12.5% | +4.8% | +0.5% |
| 1997 | +4.5% | +8.6% | -3.2% | +7.2% | +9.3% | +8.4% | +9.3% | -11.9% | +12.2% | -6.4% | +4.5% | +0.2% |
| 1996 | +3.5% | +6.7% | -4.4% | +2.2% | -0.5% | +3.0% | -5.3% | +2.6% | +4.4% | +8.1% | +9.0% | -8.3% |
| 1995 | +1.6% | +3.0% | +0.2% | -3.9% | +1.7% | +1.9% | -1.8% | +4.3% | +6.7% | -6.0% | +6.0% | +2.2% |
| 1994 | +1.4% | +0.8% | +0.2% | +2.6% | +3.0% | -4.2% | +3.1% | -0.1% | -8.2% | -3.1% | -3.8% | +9.9% |
| 1993 | +0.4% | +3.9% | +0.1% | -5.0% | +0.4% | -2.8% | +1.3% | +2.7% | -3.3% | -5.8% | -1.7% | +1.4% |
| 1992 | -6.1% | -1.3% | +1.1% | +3.6% | +0.0% | -0.2% | +1.4% | +8.1% | +7.1% | +4.1% | -1.1% | -0.9% |
| 1991 | -7.3% | +4.3% | +14.8% | -8.0% | -0.2% | +0.0% | +0.7% | -2.1% | +1.4% | -2.1% | -4.6% | +13.2% |
| 1990 | -2.6% | +2.1% | -7.9% | -4.7% | +17.6% | -3.3% | -1.5% | -6.1% | -12.0% | +8.4% | +14.8% | +2.6% |
| 1989 | +4.0% | +0.5% | +7.0% | -1.2% | +1.0% | +5.3% | +7.8% | -0.4% | +5.8% | +14.1% | +2.7% | -7.9% |
| 1988 | +1.3% | +6.0% | -5.4% | +2.5% | +6.8% | +2.6% | -1.4% | -0.6% | +5.4% | +5.7% | -3.6% | -1.1% |
| 1987 | — | — | — | — | — | — | — | — | — | — | — | — |
| Avg | -0.8% | +2.3% | +1.6% | +1.3% | +1.4% | +0.5% | +1.7% | +0.0% | +0.3% | +1.0% | +2.3% | +1.3% |
| Median | +0.4% | +3.0% | +0.7% | +0.9% | +1.4% | +1.4% | +1.2% | +0.7% | -0.4% | +1.6% | +3.5% | +0.8% |
| Last 5Y Avg | +0.4% | +1.4% | +1.9% | -1.9% | -0.4% | +0.5% | +1.8% | +2.8% | -3.5% | +1.2% | +4.1% | -2.3% |
| Std Dev (σ) | 5.6% | 6.3% | 9.2% | 6.2% | 5.7% | 3.9% | 5.1% | 6.2% | 6.3% | 9.9% | 5.8% | 6.6% |
| Consistency (μ/σ) | -0.15 | 0.37 | 0.17 | 0.21 | 0.25 | 0.13 | 0.33 | 0.01 | 0.04 | 0.10 | 0.41 | 0.20 |
| Win Rate (%) | 51% | 69% | 62% | 62% | 59% | 58% | 63% | 55% | 47% | 58% | 66% | 61% |
| Winning / Losing Months | ▲20▼19 | ▲27▼12 | ▲24▼15 | ▲24▼15 | ▲23▼16 | ▲22▼16 | ▲24▼14 | ▲21▼17 | ▲18▼20 | ▲22▼16 | ▲25▼13 | ▲23▼15 |
| Longest Win / Loss Streak | ▲5▼8 | ▲7▼3 | ▲5▼5 | ▲7▼3 | ▲5▼3 | ▲6▼5 | ▲5▼4 | ▲5▼5 | ▲4▼6 | ▲6▼3 | ▲6▼4 | ▲5▼3 |
| Best | +11.1%in January 2019 | +17.3%in February 1998 | +42.6%in March 2000 | +14.2%in April 2008 | +17.6%in May 1990 | +8.6%in June 2023 | +17.3%in July 2000 | +15.2%in August 2009 | +12.2%in September 1997 | +16.3%in October 2011 | +14.8%in November 1990 | +21.7%in December 1999 |
| Worst | -19.6%in January 2009 | -17.7%in February 2000 | -17.3%in March 2020 | -10.3%in April 2000 | -10.3%in May 2009 | -6.4%in June 2025 | -10.2%in July 2007 | -20.8%in August 1998 | -14.4%in September 2002 | -39.1%in October 2004 | -12.9%in November 2008 | -10.1%in December 2018 |
−39.1%+42.6%
2026
Jan+2.0%
Feb-0.8%
Mar-7.1%
Apr-3.3%
May-4.6%
Jun+5.4%
Jul—
Aug—
Sep—
Oct—
Nov—
Dec—
2025
Jan+2.5%
Feb+9.7%
Mar+2.6%
Apr-7.3%
May+3.6%
Jun-6.4%
Jul-8.5%
Aug+3.3%
Sep-2.1%
Oct-11.2%
Nov+3.0%
Dec+1.1%
2024
Jan+2.7%
Feb+4.3%
Mar+1.8%
Apr-2.8%
May+4.1%
Jun+1.5%
Jul+6.0%
Aug+2.2%
Sep-1.9%
Oct-1.8%
Nov+6.9%
Dec-8.9%
2023
Jan+6.1%
Feb-7.3%
Mar+2.7%
Apr+8.6%
May-3.9%
Jun+8.6%
Jul+0.5%
Aug+3.5%
Sep-2.4%
Oct+0.0%
Nov+5.2%
Dec-5.0%
2022
Jan-11.3%
Feb+1.2%
Mar+9.7%
Apr-4.8%
May-1.1%
Jun-2.9%
Jul+6.0%
Aug-1.6%
Sep-7.5%
Oct+8.6%
Nov+7.2%
Dec-4.4%
2021
Jan-5.7%
Feb+4.8%
Mar+5.7%
Apr+11.8%
May+2.0%
Jun+1.7%
Jul+5.0%
Aug+6.8%
Sep-3.7%
Oct+10.5%
Nov-1.7%
Dec+6.0%
2020
Jan+0.8%
Feb-6.5%
Mar-17.3%
Apr+13.2%
May+8.8%
Jun+1.4%
Jul+9.0%
Aug-1.5%
Sep-0.2%
Oct-9.4%
Nov+10.8%
Dec+2.1%
2019
Jan+11.1%
Feb+5.5%
Mar+0.9%
Apr+0.9%
May+1.4%
Jun+4.3%
Jul-0.5%
Aug+1.1%
Sep+0.2%
Oct+4.1%
Nov+4.3%
Dec+3.1%
2018
Jan+3.1%
Feb-0.6%
Mar-0.5%
Apr-0.9%
May-1.4%
Jun+2.0%
Jul+2.2%
Aug+1.5%
Sep-2.3%
Oct+3.0%
Nov+4.7%
Dec-10.1%
2017
Jan+0.6%
Feb+8.0%
Mar+0.6%
Apr+0.8%
May+4.6%
Jun+0.5%
Jul+0.5%
Aug+0.1%
Sep+7.3%
Oct-3.0%
Nov+3.7%
Dec-3.0%
2016
Jan-3.2%
Feb+7.0%
Mar+6.6%
Apr+4.4%
May+4.6%
Jun+3.6%
Jul-3.5%
Aug+2.9%
Sep-0.6%
Oct-5.3%
Nov+9.3%
Dec-2.5%
2015
Jan-5.6%
Feb+5.8%
Mar-1.4%
Apr+0.6%
May+3.7%
Jun-2.6%
Jul+2.7%
Aug-7.3%
Sep-2.8%
Oct+7.4%
Nov-0.8%
Dec+0.3%
2014
Jan-5.0%
Feb+5.4%
Mar+2.4%
Apr+0.5%
May+1.9%
Jun+3.1%
Jul-1.5%
Aug+4.6%
Sep-1.4%
Oct+4.4%
Nov+4.1%
Dec+1.2%
2013
Jan+3.6%
Feb+4.7%
Mar+2.2%
Apr+0.7%
May+5.3%
Jun-0.3%
Jul+5.5%
Aug-1.5%
Sep+5.6%
Oct+5.8%
Nov+3.6%
Dec+1.9%
2012
Jan+0.6%
Feb-1.2%
Mar+5.1%
Apr+2.7%
May-4.4%
Jun+0.8%
Jul+3.7%
Aug+2.9%
Sep-0.7%
Oct+1.0%
Nov+3.5%
Dec-2.1%
2011
Jan+2.7%
Feb+9.2%
Mar-2.1%
Apr+2.3%
May+1.3%
Jun+1.7%
Jul-4.8%
Aug+0.8%
Sep-10.6%
Oct+16.3%
Nov-1.4%
Dec+4.7%
2010
Jan-1.4%
Feb+7.7%
Mar+5.2%
Apr+0.0%
May-9.9%
Jun+3.4%
Jul+5.3%
Aug+0.9%
Sep+1.7%
Oct+4.5%
Nov+0.4%
Dec+9.0%
2009
Jan-19.6%
Feb-7.2%
Mar+13.0%
Apr+5.2%
May-10.3%
Jun+6.4%
Jul+2.5%
Aug+15.2%
Sep+5.1%
Oct-4.3%
Nov-3.9%
Dec-2.1%
2008
Jan+4.8%
Feb-7.6%
Mar-4.4%
Apr+14.2%
May-1.3%
Jun-2.5%
Jul+7.2%
Aug+13.0%
Sep-0.5%
Oct-7.1%
Nov-12.9%
Dec-4.9%
2007
Jan-3.2%
Feb-0.3%
Mar-0.5%
Apr+9.1%
May+3.4%
Jun-5.9%
Jul-10.2%
Aug-3.3%
Sep-4.3%
Oct+2.2%
Nov-3.0%
Dec+5.4%
2006
Jan-3.8%
Feb+1.7%
Mar-5.0%
Apr+5.1%
May-8.6%
Jun-4.1%
Jul+1.1%
Aug-3.2%
Sep+7.6%
Oct+5.2%
Nov+6.7%
Dec-2.4%
2005
Jan-1.2%
Feb+0.4%
Mar-6.3%
Apr-7.3%
May+3.6%
Jun-4.6%
Jul+5.3%
Aug-3.2%
Sep+8.4%
Oct-3.5%
Nov+6.0%
Dec+2.8%
2004
Jan-2.0%
Feb+2.3%
Mar-3.5%
Apr-1.9%
May-2.2%
Jun+2.9%
Jul-1.5%
Aug+0.7%
Sep+2.4%
Oct-39.1%
Nov+3.4%
Dec+15.1%
2003
Jan-7.2%
Feb-4.6%
Mar+4.8%
Apr+12.5%
May+5.2%
Jun+1.9%
Jul-2.3%
Aug+0.8%
Sep-4.8%
Oct-9.6%
Nov+4.0%
Dec+8.4%
2002
Jan-4.7%
Feb+3.6%
Mar+6.8%
Apr-9.9%
May-0.2%
Jun-4.3%
Jul-0.2%
Aug+1.6%
Sep-14.4%
Oct+13.0%
Nov+1.0%
Dec-2.1%
2001
Jan-7.2%
Feb-1.0%
Mar-11.2%
Apr+2.0%
May+8.7%
Jun-3.7%
Jul-0.1%
Aug-7.5%
Sep+4.1%
Oct+0.6%
Nov+10.6%
Dec+0.4%
2000
Jan-1.2%
Feb-17.7%
Mar+42.6%
Apr-10.3%
May+11.7%
Jun-5.1%
Jul+17.3%
Aug-2.7%
Sep+11.8%
Oct-1.1%
Nov-12.0%
Dec+1.7%
1999
Jan+8.3%
Feb+12.7%
Mar+4.8%
Apr+3.7%
May-5.0%
Jun+4.0%
Jul+1.0%
Aug-4.2%
Sep-5.9%
Oct+16.2%
Nov-0.5%
Dec+21.7%
1998
Jan-0.2%
Feb+17.3%
Mar+0.7%
Apr+5.0%
May-3.9%
Jun+3.6%
Jul+1.7%
Aug-20.8%
Sep+3.0%
Oct+12.5%
Nov+4.8%
Dec+0.5%
1997
Jan+4.5%
Feb+8.6%
Mar-3.2%
Apr+7.2%
May+9.3%
Jun+8.4%
Jul+9.3%
Aug-11.9%
Sep+12.2%
Oct-6.4%
Nov+4.5%
Dec+0.2%
1996
Jan+3.5%
Feb+6.7%
Mar-4.4%
Apr+2.2%
May-0.5%
Jun+3.0%
Jul-5.3%
Aug+2.6%
Sep+4.4%
Oct+8.1%
Nov+9.0%
Dec-8.3%
1995
Jan+1.6%
Feb+3.0%
Mar+0.2%
Apr-3.9%
May+1.7%
Jun+1.9%
Jul-1.8%
Aug+4.3%
Sep+6.7%
Oct-6.0%
Nov+6.0%
Dec+2.2%
1994
Jan+1.4%
Feb+0.8%
Mar+0.2%
Apr+2.6%
May+3.0%
Jun-4.2%
Jul+3.1%
Aug-0.1%
Sep-8.2%
Oct-3.1%
Nov-3.8%
Dec+9.9%
1993
Jan+0.4%
Feb+3.9%
Mar+0.1%
Apr-5.0%
May+0.4%
Jun-2.8%
Jul+1.3%
Aug+2.7%
Sep-3.3%
Oct-5.8%
Nov-1.7%
Dec+1.4%
1992
Jan-6.1%
Feb-1.3%
Mar+1.1%
Apr+3.6%
May+0.0%
Jun-0.2%
Jul+1.4%
Aug+8.1%
Sep+7.1%
Oct+4.1%
Nov-1.1%
Dec-0.9%
1991
Jan-7.3%
Feb+4.3%
Mar+14.8%
Apr-8.0%
May-0.2%
Jun+0.0%
Jul+0.7%
Aug-2.1%
Sep+1.4%
Oct-2.1%
Nov-4.6%
Dec+13.2%
1990
Jan-2.6%
Feb+2.1%
Mar-7.9%
Apr-4.7%
May+17.6%
Jun-3.3%
Jul-1.5%
Aug-6.1%
Sep-12.0%
Oct+8.4%
Nov+14.8%
Dec+2.6%
1989
Jan+4.0%
Feb+0.5%
Mar+7.0%
Apr-1.2%
May+1.0%
Jun+5.3%
Jul+7.8%
Aug-0.4%
Sep+5.8%
Oct+14.1%
Nov+2.7%
Dec-7.9%
1988
Jan+1.3%
Feb+6.0%
Mar-5.4%
Apr+2.5%
May+6.8%
Jun+2.6%
Jul-1.4%
Aug-0.6%
Sep+5.4%
Oct+5.7%
Nov-3.6%
Dec-1.1%
1987
Jan—
Feb—
Mar—
Apr—
May—
Jun—
Jul—
Aug—
Sep—
Oct—
Nov—
Dec—
Avg
Jan-0.8%
Feb+2.3%
Mar+1.6%
Apr+1.3%
May+1.4%
Jun+0.5%
Jul+1.7%
Aug+0.0%
Sep+0.3%
Oct+1.0%
Nov+2.3%
Dec+1.3%
Median
Jan+0.4%
Feb+3.0%
Mar+0.7%
Apr+0.9%
May+1.4%
Jun+1.4%
Jul+1.2%
Aug+0.7%
Sep-0.4%
Oct+1.6%
Nov+3.5%
Dec+0.8%
Last 5Y Avg
Jan+0.4%
Feb+1.4%
Mar+1.9%
Apr-1.9%
May-0.4%
Jun+0.5%
Jul+1.8%
Aug+2.8%
Sep-3.5%
Oct+1.2%
Nov+4.1%
Dec-2.3%
Std Dev (σ)
Jan5.6%
Feb6.3%
Mar9.2%
Apr6.2%
May5.7%
Jun3.9%
Jul5.1%
Aug6.2%
Sep6.3%
Oct9.9%
Nov5.8%
Dec6.6%
Consistency (μ/σ)
Jan-0.15
Feb0.37
Mar0.17
Apr0.21
May0.25
Jun0.13
Jul0.33
Aug0.01
Sep0.04
Oct0.10
Nov0.41
Dec0.20
Win Rate (%)
Jan51%
Feb69%
Mar62%
Apr62%
May59%
Jun58%
Jul63%
Aug55%
Sep47%
Oct58%
Nov66%
Dec61%
Winning / Losing Months
Jan▲20▼19
Feb▲27▼12
Mar▲24▼15
Apr▲24▼15
May▲23▼16
Jun▲22▼16
Jul▲24▼14
Aug▲21▼17
Sep▲18▼20
Oct▲22▼16
Nov▲25▼13
Dec▲23▼15
Longest Win / Loss Streak
Jan▲5▼8
Feb▲7▼3
Mar▲5▼5
Apr▲7▼3
May▲5▼3
Jun▲6▼5
Jul▲5▼4
Aug▲5▼5
Sep▲4▼6
Oct▲6▼3
Nov▲6▼4
Dec▲5▼3
Best
Jan+11.1%2019
Feb+17.3%1998
Mar+42.6%2000
Apr+14.2%2008
May+17.6%1990
Jun+8.6%2023
Jul+17.3%2000
Aug+15.2%2009
Sep+12.2%1997
Oct+16.3%2011
Nov+14.8%1990
Dec+21.7%1999
Worst
Jan-19.6%2009
Feb-17.7%2000
Mar-17.3%2020
Apr-10.3%2000
May-10.3%2009
Jun-6.4%2025
Jul-10.2%2007
Aug-20.8%1998
Sep-14.4%2002
Oct-39.1%2004
Nov-12.9%2008
Dec-10.1%2018
−39.1%+42.6%
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Income Statement
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Income Statement