Berkshire Hathaway (BRK-B) 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 | -4.4% | +5.1% | -5.1% | -1.2% | +0.2% | +3.1% | — | — | — | — | — | — |
| 2025 | +3.4% | +9.6% | +3.6% | +0.1% | -5.5% | -3.6% | -2.9% | +6.6% | -0.0% | -5.0% | +7.6% | -2.2% |
| 2024 | +7.6% | +6.7% | +2.7% | -5.7% | +4.5% | -1.8% | +7.8% | +8.5% | -3.3% | -2.0% | +7.1% | -6.2% |
| 2023 | +0.8% | -2.0% | +1.2% | +6.4% | -2.3% | +6.2% | +3.2% | +2.3% | -2.7% | -2.6% | +5.5% | -0.9% |
| 2022 | +4.7% | +2.7% | +9.8% | -8.5% | -2.1% | -13.6% | +10.1% | -6.6% | -4.9% | +10.5% | +8.0% | -3.0% |
| 2021 | -1.7% | +5.5% | +6.2% | +7.6% | +5.3% | -4.0% | +0.1% | +2.7% | -4.5% | +5.2% | -3.6% | +8.1% |
| 2020 | -0.9% | -8.1% | -11.4% | +2.5% | -1.0% | -3.8% | +9.7% | +11.4% | -2.3% | -5.2% | +13.4% | +1.3% |
| 2019 | +0.7% | -2.1% | -0.2% | +7.9% | -8.9% | +8.0% | -3.6% | -1.0% | +2.3% | +2.2% | +3.6% | +2.8% |
| 2018 | +8.2% | -3.3% | -3.7% | -2.9% | -1.1% | -2.5% | +6.0% | +5.5% | +2.6% | -4.1% | +6.3% | -6.4% |
| 2017 | +0.7% | +4.4% | -2.8% | -0.9% | +0.0% | +2.5% | +3.3% | +3.5% | +1.2% | +2.0% | +3.2% | +2.7% |
| 2016 | -1.7% | +3.4% | +5.7% | +2.5% | -3.4% | +3.0% | -0.4% | +4.3% | -4.0% | -0.1% | +9.1% | +3.5% |
| 2015 | -4.2% | +2.4% | -2.1% | -2.2% | +1.3% | -4.8% | +4.9% | -6.1% | -2.7% | +4.3% | -1.4% | -1.5% |
| 2014 | -5.9% | +3.7% | +7.9% | +3.1% | -0.4% | -1.4% | -0.9% | +9.4% | +0.6% | +1.5% | +6.1% | +1.0% |
| 2013 | +8.1% | +5.4% | +2.0% | +2.0% | +7.3% | -1.9% | +3.5% | -4.0% | +2.1% | +1.4% | +1.3% | +1.7% |
| 2012 | +2.7% | +0.1% | +3.4% | -0.9% | -1.4% | +5.0% | +1.8% | -0.6% | +4.6% | -2.1% | +2.0% | +1.8% |
| 2011 | +2.0% | +6.8% | -4.2% | -0.4% | -5.1% | -2.1% | -4.2% | -1.6% | -2.7% | +9.6% | +1.2% | -3.1% |
| 2010 | +16.3% | +4.8% | +1.4% | -5.3% | -8.4% | +13.0% | -2.0% | +0.8% | +5.0% | -3.8% | +0.2% | +0.5% |
| 2009 | -7.0% | -14.2% | +10.0% | +8.7% | -3.0% | -2.6% | +9.8% | +3.3% | +1.1% | -1.2% | +2.1% | -2.0% |
| 2008 | -3.9% | +2.7% | -4.3% | -0.4% | +0.9% | -10.8% | -4.6% | +1.9% | +12.6% | -12.6% | -8.9% | -8.1% |
| 2007 | +0.0% | -3.9% | +3.3% | -0.3% | -0.1% | -0.6% | -0.0% | +7.9% | +1.6% | +11.7% | +6.3% | +1.0% |
| 2006 | -0.1% | -1.5% | +4.3% | -2.0% | +4.0% | -0.8% | +0.1% | +5.1% | -0.9% | +10.7% | +1.1% | +3.1% |
| 2005 | +2.0% | +0.7% | -5.3% | -2.0% | +0.4% | -0.9% | -0.1% | -0.2% | -1.6% | +3.1% | +5.0% | -0.7% |
| 2004 | +5.9% | +5.1% | -0.7% | +0.3% | -4.7% | -0.6% | -2.1% | +0.0% | -0.8% | -2.3% | -0.9% | +5.6% |
| 2003 | -8.2% | -7.1% | +3.5% | +9.1% | +1.8% | +2.4% | -1.1% | +5.3% | -1.3% | +3.9% | +8.0% | +0.5% |
| 2002 | -2.9% | -1.1% | -2.3% | +2.7% | +1.6% | -9.6% | +2.4% | +6.7% | +1.0% | -0.2% | -2.0% | +0.5% |
| 2001 | -4.4% | +4.0% | -7.0% | +4.5% | -0.1% | +1.2% | -0.2% | +0.7% | +0.8% | +1.0% | -0.9% | +8.2% |
| 2000 | -10.1% | -12.5% | +26.4% | +5.3% | -1.6% | -6.7% | +3.7% | +4.8% | +8.2% | +1.6% | +3.4% | +8.3% |
| 1999 | -8.5% | +10.7% | -1.2% | +5.1% | -6.2% | -3.4% | -5.0% | -5.8% | -7.3% | +12.6% | -10.8% | -1.9% |
| 1998 | +9.0% | +10.9% | +20.7% | +2.2% | +2.3% | +11.3% | -10.4% | -14.3% | -0.7% | +7.8% | +4.8% | +4.4% |
| 1997 | +3.9% | +2.9% | +1.9% | +5.0% | +13.7% | +9.3% | +0.1% | -12.0% | +7.4% | -1.7% | +2.7% | +2.1% |
| 1996 | — | — | — | — | — | +1.3% | -0.7% | +1.5% | +3.1% | +0.6% | +2.2% | +0.8% |
| Avg | +0.4% | +1.4% | +2.1% | +1.4% | -0.4% | -0.4% | +1.0% | +1.3% | +0.5% | +1.6% | +2.7% | +0.7% |
| Median | +0.4% | +2.8% | +1.6% | +1.1% | -0.3% | -1.2% | +0.0% | +2.1% | +0.3% | +1.2% | +3.0% | +0.9% |
| Last 5Y Avg | +2.4% | +4.4% | +2.4% | -1.8% | -1.0% | -3.4% | +3.7% | +2.7% | -3.1% | +1.2% | +4.9% | -0.8% |
| Std Dev (σ) | 6.0% | 6.1% | 7.7% | 4.4% | 4.6% | 6.1% | 4.7% | 6.0% | 4.2% | 5.7% | 5.1% | 4.0% |
| Consistency (μ/σ) | 0.07 | 0.23 | 0.28 | 0.33 | -0.09 | -0.07 | 0.20 | 0.22 | 0.11 | 0.27 | 0.54 | 0.18 |
| Win Rate (%) | 53% | 67% | 57% | 57% | 43% | 37% | 50% | 63% | 50% | 57% | 77% | 63% |
| Winning / Losing Months | ▲16▼14 | ▲20▼10 | ▲17▼13 | ▲17▼13 | ▲13▼17 | ▲11▼19 | ▲15▼15 | ▲19▼11 | ▲15▼15 | ▲17▼13 | ▲23▼7 | ▲19▼11 |
| Longest Win / Loss Streak | ▲4▼5 | ▲8▼3 | ▲5▼4 | ▲8▼4 | ▲2▼4 | ▲3▼6 | ▲5▼3 | ▲5▼3 | ▲4▼6 | ▲4▼3 | ▲6▼2 | ▲5▼4 |
| Best | +16.3%in January 2010 | +10.9%in February 1998 | +26.4%in March 2000 | +9.1%in April 2003 | +13.7%in May 1997 | +13.0%in June 2010 | +10.1%in July 2022 | +11.4%in August 2020 | +12.6%in September 2008 | +12.6%in October 1999 | +13.4%in November 2020 | +8.3%in December 2000 |
| Worst | -10.1%in January 2000 | -14.2%in February 2009 | -11.4%in March 2020 | -8.5%in April 2022 | -8.9%in May 2019 | -13.6%in June 2022 | -10.4%in July 1998 | -14.3%in August 1998 | -7.3%in September 1999 | -12.6%in October 2008 | -10.8%in November 1999 | -8.1%in December 2008 |
−14.3%+26.4%
2026
Jan-4.4%
Feb+5.1%
Mar-5.1%
Apr-1.2%
May+0.2%
Jun+3.1%
Jul—
Aug—
Sep—
Oct—
Nov—
Dec—
2025
Jan+3.4%
Feb+9.6%
Mar+3.6%
Apr+0.1%
May-5.5%
Jun-3.6%
Jul-2.9%
Aug+6.6%
Sep-0.0%
Oct-5.0%
Nov+7.6%
Dec-2.2%
2024
Jan+7.6%
Feb+6.7%
Mar+2.7%
Apr-5.7%
May+4.5%
Jun-1.8%
Jul+7.8%
Aug+8.5%
Sep-3.3%
Oct-2.0%
Nov+7.1%
Dec-6.2%
2023
Jan+0.8%
Feb-2.0%
Mar+1.2%
Apr+6.4%
May-2.3%
Jun+6.2%
Jul+3.2%
Aug+2.3%
Sep-2.7%
Oct-2.6%
Nov+5.5%
Dec-0.9%
2022
Jan+4.7%
Feb+2.7%
Mar+9.8%
Apr-8.5%
May-2.1%
Jun-13.6%
Jul+10.1%
Aug-6.6%
Sep-4.9%
Oct+10.5%
Nov+8.0%
Dec-3.0%
2021
Jan-1.7%
Feb+5.5%
Mar+6.2%
Apr+7.6%
May+5.3%
Jun-4.0%
Jul+0.1%
Aug+2.7%
Sep-4.5%
Oct+5.2%
Nov-3.6%
Dec+8.1%
2020
Jan-0.9%
Feb-8.1%
Mar-11.4%
Apr+2.5%
May-1.0%
Jun-3.8%
Jul+9.7%
Aug+11.4%
Sep-2.3%
Oct-5.2%
Nov+13.4%
Dec+1.3%
2019
Jan+0.7%
Feb-2.1%
Mar-0.2%
Apr+7.9%
May-8.9%
Jun+8.0%
Jul-3.6%
Aug-1.0%
Sep+2.3%
Oct+2.2%
Nov+3.6%
Dec+2.8%
2018
Jan+8.2%
Feb-3.3%
Mar-3.7%
Apr-2.9%
May-1.1%
Jun-2.5%
Jul+6.0%
Aug+5.5%
Sep+2.6%
Oct-4.1%
Nov+6.3%
Dec-6.4%
2017
Jan+0.7%
Feb+4.4%
Mar-2.8%
Apr-0.9%
May+0.0%
Jun+2.5%
Jul+3.3%
Aug+3.5%
Sep+1.2%
Oct+2.0%
Nov+3.2%
Dec+2.7%
2016
Jan-1.7%
Feb+3.4%
Mar+5.7%
Apr+2.5%
May-3.4%
Jun+3.0%
Jul-0.4%
Aug+4.3%
Sep-4.0%
Oct-0.1%
Nov+9.1%
Dec+3.5%
2015
Jan-4.2%
Feb+2.4%
Mar-2.1%
Apr-2.2%
May+1.3%
Jun-4.8%
Jul+4.9%
Aug-6.1%
Sep-2.7%
Oct+4.3%
Nov-1.4%
Dec-1.5%
2014
Jan-5.9%
Feb+3.7%
Mar+7.9%
Apr+3.1%
May-0.4%
Jun-1.4%
Jul-0.9%
Aug+9.4%
Sep+0.6%
Oct+1.5%
Nov+6.1%
Dec+1.0%
2013
Jan+8.1%
Feb+5.4%
Mar+2.0%
Apr+2.0%
May+7.3%
Jun-1.9%
Jul+3.5%
Aug-4.0%
Sep+2.1%
Oct+1.4%
Nov+1.3%
Dec+1.7%
2012
Jan+2.7%
Feb+0.1%
Mar+3.4%
Apr-0.9%
May-1.4%
Jun+5.0%
Jul+1.8%
Aug-0.6%
Sep+4.6%
Oct-2.1%
Nov+2.0%
Dec+1.8%
2011
Jan+2.0%
Feb+6.8%
Mar-4.2%
Apr-0.4%
May-5.1%
Jun-2.1%
Jul-4.2%
Aug-1.6%
Sep-2.7%
Oct+9.6%
Nov+1.2%
Dec-3.1%
2010
Jan+16.3%
Feb+4.8%
Mar+1.4%
Apr-5.3%
May-8.4%
Jun+13.0%
Jul-2.0%
Aug+0.8%
Sep+5.0%
Oct-3.8%
Nov+0.2%
Dec+0.5%
2009
Jan-7.0%
Feb-14.2%
Mar+10.0%
Apr+8.7%
May-3.0%
Jun-2.6%
Jul+9.8%
Aug+3.3%
Sep+1.1%
Oct-1.2%
Nov+2.1%
Dec-2.0%
2008
Jan-3.9%
Feb+2.7%
Mar-4.3%
Apr-0.4%
May+0.9%
Jun-10.8%
Jul-4.6%
Aug+1.9%
Sep+12.6%
Oct-12.6%
Nov-8.9%
Dec-8.1%
2007
Jan+0.0%
Feb-3.9%
Mar+3.3%
Apr-0.3%
May-0.1%
Jun-0.6%
Jul-0.0%
Aug+7.9%
Sep+1.6%
Oct+11.7%
Nov+6.3%
Dec+1.0%
2006
Jan-0.1%
Feb-1.5%
Mar+4.3%
Apr-2.0%
May+4.0%
Jun-0.8%
Jul+0.1%
Aug+5.1%
Sep-0.9%
Oct+10.7%
Nov+1.1%
Dec+3.1%
2005
Jan+2.0%
Feb+0.7%
Mar-5.3%
Apr-2.0%
May+0.4%
Jun-0.9%
Jul-0.1%
Aug-0.2%
Sep-1.6%
Oct+3.1%
Nov+5.0%
Dec-0.7%
2004
Jan+5.9%
Feb+5.1%
Mar-0.7%
Apr+0.3%
May-4.7%
Jun-0.6%
Jul-2.1%
Aug+0.0%
Sep-0.8%
Oct-2.3%
Nov-0.9%
Dec+5.6%
2003
Jan-8.2%
Feb-7.1%
Mar+3.5%
Apr+9.1%
May+1.8%
Jun+2.4%
Jul-1.1%
Aug+5.3%
Sep-1.3%
Oct+3.9%
Nov+8.0%
Dec+0.5%
2002
Jan-2.9%
Feb-1.1%
Mar-2.3%
Apr+2.7%
May+1.6%
Jun-9.6%
Jul+2.4%
Aug+6.7%
Sep+1.0%
Oct-0.2%
Nov-2.0%
Dec+0.5%
2001
Jan-4.4%
Feb+4.0%
Mar-7.0%
Apr+4.5%
May-0.1%
Jun+1.2%
Jul-0.2%
Aug+0.7%
Sep+0.8%
Oct+1.0%
Nov-0.9%
Dec+8.2%
2000
Jan-10.1%
Feb-12.5%
Mar+26.4%
Apr+5.3%
May-1.6%
Jun-6.7%
Jul+3.7%
Aug+4.8%
Sep+8.2%
Oct+1.6%
Nov+3.4%
Dec+8.3%
1999
Jan-8.5%
Feb+10.7%
Mar-1.2%
Apr+5.1%
May-6.2%
Jun-3.4%
Jul-5.0%
Aug-5.8%
Sep-7.3%
Oct+12.6%
Nov-10.8%
Dec-1.9%
1998
Jan+9.0%
Feb+10.9%
Mar+20.7%
Apr+2.2%
May+2.3%
Jun+11.3%
Jul-10.4%
Aug-14.3%
Sep-0.7%
Oct+7.8%
Nov+4.8%
Dec+4.4%
1997
Jan+3.9%
Feb+2.9%
Mar+1.9%
Apr+5.0%
May+13.7%
Jun+9.3%
Jul+0.1%
Aug-12.0%
Sep+7.4%
Oct-1.7%
Nov+2.7%
Dec+2.1%
1996
Jan—
Feb—
Mar—
Apr—
May—
Jun+1.3%
Jul-0.7%
Aug+1.5%
Sep+3.1%
Oct+0.6%
Nov+2.2%
Dec+0.8%
Avg
Jan+0.4%
Feb+1.4%
Mar+2.1%
Apr+1.4%
May-0.4%
Jun-0.4%
Jul+1.0%
Aug+1.3%
Sep+0.5%
Oct+1.6%
Nov+2.7%
Dec+0.7%
Median
Jan+0.4%
Feb+2.8%
Mar+1.6%
Apr+1.1%
May-0.3%
Jun-1.2%
Jul+0.0%
Aug+2.1%
Sep+0.3%
Oct+1.2%
Nov+3.0%
Dec+0.9%
Last 5Y Avg
Jan+2.4%
Feb+4.4%
Mar+2.4%
Apr-1.8%
May-1.0%
Jun-3.4%
Jul+3.7%
Aug+2.7%
Sep-3.1%
Oct+1.2%
Nov+4.9%
Dec-0.8%
Std Dev (σ)
Jan6.0%
Feb6.1%
Mar7.7%
Apr4.4%
May4.6%
Jun6.1%
Jul4.7%
Aug6.0%
Sep4.2%
Oct5.7%
Nov5.1%
Dec4.0%
Consistency (μ/σ)
Jan0.07
Feb0.23
Mar0.28
Apr0.33
May-0.09
Jun-0.07
Jul0.20
Aug0.22
Sep0.11
Oct0.27
Nov0.54
Dec0.18
Win Rate (%)
Jan53%
Feb67%
Mar57%
Apr57%
May43%
Jun37%
Jul50%
Aug63%
Sep50%
Oct57%
Nov77%
Dec63%
Winning / Losing Months
Jan▲16▼14
Feb▲20▼10
Mar▲17▼13
Apr▲17▼13
May▲13▼17
Jun▲11▼19
Jul▲15▼15
Aug▲19▼11
Sep▲15▼15
Oct▲17▼13
Nov▲23▼7
Dec▲19▼11
Longest Win / Loss Streak
Jan▲4▼5
Feb▲8▼3
Mar▲5▼4
Apr▲8▼4
May▲2▼4
Jun▲3▼6
Jul▲5▼3
Aug▲5▼3
Sep▲4▼6
Oct▲4▼3
Nov▲6▼2
Dec▲5▼4
Best
Jan+16.3%2010
Feb+10.9%1998
Mar+26.4%2000
Apr+9.1%2003
May+13.7%1997
Jun+13.0%2010
Jul+10.1%2022
Aug+11.4%2020
Sep+12.6%2008
Oct+12.6%1999
Nov+13.4%2020
Dec+8.3%2000
Worst
Jan-10.1%2000
Feb-14.2%2009
Mar-11.4%2020
Apr-8.5%2022
May-8.9%2019
Jun-13.6%2022
Jul-10.4%1998
Aug-14.3%1998
Sep-7.3%1999
Oct-12.6%2008
Nov-10.8%1999
Dec-8.1%2008
−14.3%+26.4%
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