American Water Works (AWK) seasonality: returns by month

American Water Works (AWK) has averaged +3.3% in November and −1.9% in September since 2008, the best and worst months. Every month's average is shown below with how often it rose, so a single big year can't hide.

American Water Works returns by calendar month since 2008

AWK return statistics by calendar month
MonthAverageMedianRose inBestWorst
January+0.9%+1.5%72% of 18 yrs+10.9% 2020−14.9% 2022
February−0.2%+1.4%56% of 18 yrs+9.8% 2025−11.6% 2009
March+2.7%+2.8%78% of 18 yrs+9.6% 2022−3.3% 2020
April+0.7%+1.1%78% of 18 yrs+5.6% 2016−6.9% 2022
May+0.1%−1.4%37% of 19 yrs+7.5% 2024−5.7% 2010
June+1.6%+1.3%58% of 19 yrs+14.0% 2016−8.0% 2015
July+2.7%+3.4%74% of 19 yrs+14.5% 2020−13.2% 2008
August+2.4%+1.7%68% of 19 yrs+20.4% 2008−10.0% 2016
September−1.9%0.0%53% of 19 yrs+6.0% 2015−12.3% 2022
October+1.0%+0.9%56% of 18 yrs+11.7% 2022−7.7% 2025
November+3.3%+2.1%67% of 18 yrs+18.5% 2009−2.9% 2021
December+0.6%+0.4%67% of 18 yrs+12.0% 2021−9.1% 2024

Month-end closes adjusted for splits and dividends, through the October 14, 2026 close. Source: Yahoo Finance chart API, monthly close adjusted for splits and dividends. Excludes taxes, fees and inflation. Methodology

Past returns don't repeat. What does the price assume now?

These tables show what already happened. A buyer today gets the next ten years, and the price already reflects what the market expects. The reverse DCF calculator shows the growth today's price implies, so you can judge whether it is realistic.

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Frequently asked questions

What is the best month for American Water Works?

November, with an average return of +3.3% since 2008. It rose in 67% of Novembers (18 years).

What is the worst month for American Water Works?

September, averaging −1.9% and rising in 53% of years.

Is it a good idea to time purchases by month?

Usually not. Each month has only about 18 observations here, one big year can swing an average, and the gaps between months are small next to a single year's range. Seasonality is a curiosity, not a trading signal.

How are the monthly returns calculated?

Each month's return runs from the previous month-end close to that month's close, using prices adjusted for splits and dividends. The current, unfinished month is left out.

The math is easy. The macro is hard.

American Water Works shows the arithmetic. Members get the monthly call that decides which inputs matter, plus written breakpoints when the facts move. $39/month or $249/year.

$39/mo or $249/yr · cancel future renewals anytime · sources included