Question 1

What is Ameren's P/E ratio?

Accepted Answer

Ameren (AEE) P/E ratio is 20.0× as of June 5, 2026. The ratio is calculated by dividing market capitalisation by trailing twelve-month earnings (net income), using USD-normalised financials (IAS 21 exchange-rate translation for non-USD reporters).

Question 2

How is the P/E ratio calculated?

Accepted Answer

P/E = Share Price ÷ Trailing Twelve-Month (TTM) Diluted EPS, or equivalently Market Capitalisation ÷ TTM Net Income. All inputs are sourced from audited GAAP/IFRS filings and translated to USD using period-end exchange rates so the multiple is comparable across companies and currencies.

Question 3

What is the P/E ratio?

Accepted Answer

The price-to-earnings (P/E) ratio, also called the earnings multiple, measures how much investors pay per dollar of a company's trailing twelve-month (TTM) earnings. It is calculated as share price ÷ TTM diluted EPS (equivalent to market capitalisation ÷ TTM net income). A higher P/E implies the market is pricing in stronger future earnings growth or lower risk; a lower P/E can signal slower expected growth, higher risk, or potential undervaluation.

Question 4

What is a good P/E ratio for Ameren?

Accepted Answer

There is no universal "good" P/E. As a rule of thumb, the S&P 500 has historically averaged a P/E in the mid-to-high teens; mature, slow-growth businesses commonly trade in the 10–18× range, while high-growth or asset-light companies often trade at 25–50×+. What matters is the comparison to sector peers and to the company's own historical range. For Ameren specifically, the relevant sector benchmark is the current sector median of 21.4×.

Question 5

Is Ameren's P/E ratio high or low?

Accepted Answer

Ameren's P/E ratio of 20.0× is below its own 5-year average of 20.2× and below the sector median of 21.4×. That places the current reading at the 31th percentile of its 10-year history. A higher multiple usually reflects stronger expected growth, lower perceived risk, or higher returns on capital; a lower multiple reflects the opposite.

Question 6

What is Ameren's historical P/E ratio range?

Accepted Answer

In the available daily series, Ameren (AEE) P/E ratio has ranged from a low of 8.1× in 2009 to a high of 175.6× in 2012. The 5-year average is 20.2× and the 5-year median is 20.4×.

Question 7

What was Ameren's P/E ratio in 2025?

Accepted Answer

Ameren (AEE) P/E ratio at the end of 2025 was 18.6×. Annual values reflect the multiple on the last trading day of each calendar year, using the trailing twelve-month earnings figure available at that date.

Question 8

Why does Ameren's P/E ratio change over time?

Accepted Answer

Valuation multiples move with two inputs: the numerator (market capitalisation, which tracks the share price) and the denominator (earnings). Share-price changes — driven by interest rates, earnings expectations, risk appetite, and broader market sentiment — typically dominate short-term moves, while changes in the underlying fundamental drive the longer-term trend. As a result, the ratio can rise during stock-price rallies even if the business itself has not become more valuable, and fall during sell-offs even when fundamentals are improving.


2025	$27.11B	$1.46B	18.6×	-1.5×	Dec 31, 2025
2024	$23.84B	$1.18B	20.2×	+3.6×	Dec 31, 2024
2023	$19.06B	$1.15B	16.5×	-4.9×	Dec 31, 2023
2022	$23.04B	$1.07B	21.5×	-1.7×	Dec 31, 2022
2021	$22.93B	$990.00M	23.2×	+1.0×	Dec 31, 2021
2020	$19.31B	$871.00M	22.2×	-0.6×	Dec 31, 2020
2019	$18.89B	$828.00M	22.8×	+3.3×	Dec 31, 2019
2018	$15.94B	$815.00M	19.6×	-7.8×	Dec 31, 2018
2017	$14.31B	$523.00M	27.4×	+7.9×	Dec 31, 2017
2016	$12.73B	$653.00M	19.5×	+2.8×	Dec 31, 2016
2015	$10.50B	$630.00M	16.7×	-3.3×	Dec 31, 2015
2014	$11.68B	$586.00M	19.9×	-4.4×	Dec 31, 2014
2013	$7.03B	$289.00M	24.3×	—	Dec 31, 2013
2012	$7.45B	−$974.00M	—	—	Dec 31, 2012
2011	$8.03B	$519.00M	15.5×	-33.2×	Dec 31, 2011
2010	$6.77B	$139.00M	48.7×	+37.9×	Dec 31, 2010
2009	$6.62B	$612.00M	10.8×	-0.8×	Dec 31, 2009
2008	$7.05B	$605.00M	11.6×	-6.6×	Dec 31, 2008
2007	$11.29B	$618.00M	18.3×	-2.0×	Dec 31, 2007
2006	$11.08B	$547.00M	20.3×	+3.0×	Dec 31, 2006
2005	$10.47B	$606.00M	17.3×	-1.2×	Dec 31, 2005
2004	$9.79B	$530.00M	18.5×	+3.2×	Dec 31, 2004
2003	$8.02B	$524.00M	15.3×	-1.5×	Dec 31, 2003
2002	$6.43B	$382.00M	16.8×	+4.4×	Dec 31, 2002
2001	$5.82B	$469.34M	12.4×	—	Dec 31, 2001


Alliant Energy (LNT)	22.5×
American States Water (AWR)	22.1×
Middlesex Water (MSEX)	21.8×
Evergy (EVRG)	21.4×
H2O America (HTO)	21.2×
CMS Energy (CMS)	21.1×
Essential Utilities (WTRG)	20.5×
Duke Energy (DUK)	19.8×
MGE Energy (MGEE)	19.8×
American Electric Power Company (AEP)	19.4×
Consolidated Edison (ED)	19.1×
Pinnacle West Capital (PNW)	18.7×
Dominion Energy (D)	18.3×
Black Hills (BKH)	18.2×
Exelon (EXC)	18.1×
Public Service Enterprise Group (PEG)	17.8×
Northwest Natural Holding (NWN)	17.7×
New Jersey Resources (NJR)	16.2×
Avista (AVA)	16.0×
Eversource Energy (ES)	14.9×
Artesian Resources (ARTNA)	14.1×
PG&E (PCG)	13.1×
UGI (UGI)	12.2×
Edison International (EIX)	7.6×
AES (AES)	7.5×

P/E Ratio for Ameren (AEE)

P/E Ratio daily chart for Ameren (AEE)

Historical P/E Ratio for Ameren (AEE) from 2001 to 2025

About P/E Ratio at Ameren (AEE)

Ameren P/E Ratio by Year

Ameren P/E Ratio 2025: 18.6×

Ameren P/E Ratio 2024: 20.2×

Ameren P/E Ratio 2023: 16.5×

Ameren P/E Ratio 2022: 21.5×

Ameren P/E Ratio 2021: 23.2×

Sector peers by P/E Ratio — chart

Sector peers by P/E Ratio — table

Frequently asked questions

Ameren (AEE) Key Financials

P/E Ratio daily chart for Ameren (AEE)

Historical P/E Ratio for Ameren (AEE) from 2001 to 2025

About P/E Ratio at Ameren (AEE)

Ameren P/E Ratio by Year

Ameren P/E Ratio 2025: 18.6×

Ameren P/E Ratio 2024: 20.2×

Ameren P/E Ratio 2023: 16.5×

Ameren P/E Ratio 2022: 21.5×

Ameren P/E Ratio 2021: 23.2×

Sector peers by P/E Ratio — chart

Sector peers by P/E Ratio — table

Frequently asked questions

+What is Ameren's P/E ratio?

+How is the P/E ratio calculated?

+What is the P/E ratio?

+What is a good P/E ratio for Ameren?

+Is Ameren's P/E ratio high or low?

+What is Ameren's historical P/E ratio range?

+What was Ameren's P/E ratio in 2025?

+Why does Ameren's P/E ratio change over time?

Ameren (AEE) Key Financials