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Compare · AEE vs CMS

AEE vs CMS

Side-by-side comparison of Ameren Corporation (AEE) and CMS Energy Corporation (CMS): market cap, price performance, sector, and recent activity on the wire.

Summary

  • Both AEE and CMS operate in Power Generation (Utilities), so they compete in similar markets.
  • AEE is the larger of the two at $30.24B, about 1.4x CMS ($22.25B).
  • Over the past year, AEE is up 11.7% and CMS is up 1.8% - AEE leads by 9.9 points.
  • AEE has been more active in the news (7 items in the past 4 weeks vs 6 for CMS).
  • Both have 25 recent analyst ratings on file.
PerformanceAEE+11.73%CMS+1.84%
2025-06-09+0.00%2026-06-08
MetricAEECMS
Company
Ameren Corporation
CMS Energy Corporation
Price
$107.15-1.81%
$70.92-1.55%
Market cap
$30.24B
$22.25B
1M return
-1.48%
-4.12%
1Y return
+11.73%
+1.84%
Industry
Power Generation
Power Generation
Exchange
NYSE
NYSE
IPO
News (4w)
7
6
Recent ratings
25
25
AEE

Ameren Corporation

Ameren Corporation, together with its subsidiaries, operates as a public utility holding company in the United States. It operates through four segments: Ameren Missouri, Ameren Illinois Electric Distribution, Ameren Illinois Natural Gas, and Ameren Transmission. The company engages in the rate-regulated electric generation, transmission, and distribution activities; and rate-regulated natural gas distribution and transmission businesses. It primarily generates electricity through coal, nuclear, and natural gas, as well as renewable sources, such as hydroelectric, wind, methane gas, and solar. The company serves residential, commercial, and industrial customers. The company was founded in 1881 and is headquartered in St. Louis, Missouri.

CMS

CMS Energy Corporation

CMS Energy Corporation operates as an energy company primarily in Michigan. The company operates through four segments: Electric Utility, Gas Utility, Enterprises, and EnerBank. The Electric Utility segment is involved in the generation, purchase, transmission, distribution, and sale of electricity. This segment generates electricity through coal, wind, gas, renewable energy, oil, and nuclear sources. Its distribution system comprises 205 miles of high-voltage distribution overhead lines; 4 miles of high-voltage distribution underground lines; 4,428 miles of high-voltage distribution overhead lines; 19 miles of high-voltage distribution underground lines; 77,833 miles of electric distribution overhead lines; 9,264 miles of underground distribution lines; 1,096 substations; and 2 battery facilities. The Gas Utility segment engages in the purchase, transmission, storage, distribution, and sale of natural gas, which includes 2,410 miles of transmission lines; 15 gas storage fields; 27,958 miles of distribution mains; and 8 compressor stations. The Enterprises segment is involved in the independent power production and marketing, including the development and operation of renewable generation. It owns interests in independent power plants totalling 1,838 megawatts. The EnterBank segment operates an industrial bank providing unsecured installment loans for financing home improvements. It serves 1.9 million electric and 1.8 million gas customers, including residential, commercial, and diversified industrial customers. CMS Energy Corporation was founded in 1987 and is headquartered in Jackson, Michigan.

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