Market Cap for Ameren (AEE)
According to Ameren's latest reported financial statements, the company's latest reported market cap is $27.33B USD. Market capitalization is the total dollar value of all outstanding shares — shares outstanding × stock price — and the standard measure of a company's equity value. On this page, historical market cap snaps filing-period share counts to closing prices on or before each statement date (not intraday tick data).
Headline figure above is from the reporting period ending (reported ). Chart and table below cover the full reported history back to .
AEE
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Latest period
$27.33B
YoY change
+11.4%
5Y CAGR
+5.7%
Peak year (2026)
$30.29B
Latest annual
$30.29B
Market Cap history chart for Ameren (AEE) from 1997 to 2026
Market Cap history table for Ameren (AEE) from 1997 to 2026
| Fiscal year | Period ended | Reported | Market Cap | YoY |
|---|---|---|---|---|
| 2026 | $30.29B | +11.4% | ||
| 2025 | $27.18B | +14.0% | ||
| 2024 | $23.84B | +25.1% | ||
| 2023 | $19.05B | -17.4% | ||
| 2022 | $23.07B | +0.6% | ||
| 2021 | $22.93B | +18.1% | ||
| 2020 | $19.41B | +2.3% | ||
| 2019 | $18.98B | +18.4% | ||
| 2018 | $16.03B | +11.3% | ||
| 2017 | $14.41B | +12.8% | ||
| 2016 | $12.77B | +21.3% | ||
| 2015 | $10.53B | -6.6% | ||
| 2014 | $11.27B | +27.5% | ||
| 2013 | $8.84B | +18.6% | ||
| 2012 | $7.45B | -6.9% | ||
| 2011 | $8.00B | +18.9% | ||
| 2010 | $6.73B | +9.3% | ||
| 2009 | $6.16B | -11.8% | ||
| 2008 | $6.99B | -37.8% | ||
| 2007 | $11.24B | +1.8% | ||
| 2006 | $11.05B | +7.4% | ||
| 2005 | $10.29B | +10.0% | ||
| 2004 | $9.36B | +26.2% | ||
| 2003 | $7.42B | +21.9% | ||
| 2002 | $6.08B | +4.3% | ||
| 2001 | $5.83B | -8.2% | ||
| 2000 | $6.36B | +41.5% | ||
| 1999 | $4.49B | -23.3% | ||
| 1998 | $5.86B | -1.3% | ||
| 1997 | $5.93B | — |
Market Cap values are taken from Ameren's reported income statements (10-Q quarterly and 10-K annual filings with the U.S. Securities and Exchange Commission). Each row shows the period end date and the date the filing was reported; YoY compares each figure to the same period one year earlier. Amounts are in USD as filed.
Analysis
The 2026 reading of Ameren (AEE) market cap is $30.29B – grew 11.4% year-over-year.
Looking at the 2021–2026 (5 years) stretch, Ameren market cap compounded at +5.7% per year, sustaining 3 straight years of year-over-year growth.
The dataset's maximum market cap sits at $30.29B (2026); the minimum reading of $4.49B dates to 1999.
Ameren (AEE) sits 9th of 8 Utilities peers we track on this metric, against a peer median of $97.46B.
Ameren Market Cap by Year
Ameren Market Cap 2026: $30.29B
Ameren market cap in 2026 was $30.29B, grew 11.4% from 2025. This figure represents the highest annual value in the available history.
Ameren Market Cap 2025: $27.18B
Ameren market cap in 2025 was $27.18B, grew 14.0% from 2024.
Ameren Market Cap 2024: $23.84B
Ameren market cap in 2024 was $23.84B, grew 25.1% from 2023.
Ameren Market Cap 2023: $19.05B
Ameren market cap in 2023 was $19.05B, declined 17.4% below 2022.
Ameren Market Cap 2022: $23.07B
Ameren market cap in 2022 was $23.07B.
See more financial history for Ameren (AEE).
Sector peers — Market Cap
Companies in the same sector as Ameren, ranked by their latest market cap.
| Company | Market Cap | Sector |
|---|---|---|
| GE Vernova Inc. (GEV) | $292.62B | Utilities |
| NextEra Energy, Inc. (NEE) | $201.26B | Utilities |
| The Southern Company (SO) | $106.43B | Utilities |
| Duke Energy Corporation (DUK) | $99.46B | Utilities |
| Constellation Energy Corporation (CEG) | $95.47B | Utilities |
| American Electric Power Company, Inc. (AEP) | $73.70B | Utilities |
| Sempra (SRE) | $60.69B | Utilities |
| Dominion Energy, Inc. (D) | $55.28B | Utilities |
Frequently asked questions
What is Ameren's market cap?
- Latest reported market cap for Ameren (AEE) is $27.33B (period ending December 31, 2025).
How has Ameren market cap changed year-over-year?
- Ameren (AEE) market cap changed +11.4% year-over-year on the latest annual filing.
What is the long-term growth rate of Ameren market cap?
- Ameren (AEE) market cap compound annual growth rate is +5.7% over the most recent 5 years available.
When did Ameren market cap hit its highest annual value?
- Ameren market cap reached its highest annual value of $30.29B in 2026.
What was Ameren market cap in 2025?
- Ameren (AEE) market cap in 2025 was $27.18B.
What was Ameren market cap in 2026?
- Ameren (AEE) market cap in 2026 was $30.29B.
Metrics overview
Pick a metric for charts, filings, and peers — each row shows the latest TTM or annual value with year-over-year change.
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AEE Overview
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