Market Cap

Alliant Energy Corporation Market Capitalization:

$16.86 Billion

USD as of Jan. 1, 2026

business Alliant Energy Corporation Company Profile

Alliant Energy Corporation Main Stock Listing

NASDAQ: LNT

Market Capitalization History of Alliant Energy Corporation

Market capitalizations are calculated from the opening stock price at the beginning of each month.

Top Competitors by Market Capitalization

Industry: Utilities—Regulated Electric
Company Market Cap (USD)
NextEra Energy $168.55 B
The Southern Company $95.99 B
Duke Energy Corporation $91.33 B
American Electric Power Company, Inc. $61.99 B
Xcel Energy Inc. $44.18 B
Sector: Utilities
Company Market Cap (USD)
NextEra Energy $168.55 B
Iberdrola, SA $146.18 B
Siemens Energy $123.41 B
Constellation Energy $114.42 B
Enel SpA $106.27 B

Yearly evolution of Alliant Energy Corporation market cap

Date Market Cap YoY Change
Jan. 1, 2026 $16.86 B 11.95%
Jan. 1, 2025 $15.06 B 13.62%
Jan. 1, 2024 $13.25 B -2.46%
Jan. 1, 2023 $13.59 B -7.37%
Jan. 1, 2022 $14.67 B 23.04%
Jan. 1, 2021 $11.92 B -18.04%
Jan. 1, 2020 $14.55 B 33.48%
Jan. 1, 2019 $10.90 B 11.87%
Jan. 1, 2018 $9.74 B 5.58%
Jan. 1, 2017 $9.23 B 15.24%
Jan. 1, 2016 $8.01 B -4.77%
Jan. 1, 2015 $8.41 B 32.04%
Jan. 1, 2014 $6.37 B 13.35%
Jan. 1, 2013 $5.62 B 8.14%
Jan. 1, 2012 $5.19 B 14.07%
Jan. 1, 2011 $4.55 B 19.10%
Jan. 1, 2010 $3.82 B 8.22%
Jan. 1, 2009 $3.53 B -21.87%
Jan. 1, 2008 $4.52 B 1.51%
Jan. 1, 2007 $4.45 B 22.56%
Jan. 1, 2006 $3.63 B 7.85%
Jan. 1, 2005 $3.37 B 6.22%
Jan. 1, 2004 $3.17 B 59.91%
Jan. 1, 2003 $1.98 B -45.69%
Jan. 1, 2002 $3.65 B -2.26%
Jan. 1, 2001 $3.74 B

Market capitalization is calculated from the opening stock price at the beginning of each year.

Alliant Energy Corporation Categories

United States languages Utilities languages Utilities—Regulated Electric
United States Utilities United States Utilities—Regulated Electric

Stocks & Indices

Alliant Energy Corporation has the following listings and related stock indices.


Stock: NASDAQ: LNT

Stock: Bovespa: A1EN34

Stock: FSX: AY1

What is a company's market capitalization?

The market capitalization of a company, more simply referred to as "market cap", is the total market value of a publicly traded company's outstanding shares. It is often considered as a key indicator of what a company is worth.