Alliant Energy (LNT) - Market capitalization

Market cap: A$25.08 Billion

As of December 2025 Alliant Energy has a market cap of A$25.08 Billion. This makes Alliant Energy the world's 1286th most valuable company by market cap according to our data. The market capitalization, commonly called market cap, is the total market value of a publicly traded company's outstanding shares and is commonly used to measure how much a company is worth.

Market cap history of Alliant Energy from 1996 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	A$25.08 B	2.12%
2024	A$24.56 B	27.83%
2023	A$19.21 B	-5.65%
2022	A$20.36 B	-4.06%
2021	A$21.22 B	26.83%
2020	A$16.73 B	-12.6%
2019	A$19.14 B	35.26%
2018	A$14.15 B	12.19%
2017	A$12.61 B	5.52%
2016	A$11.95 B	22.95%
2015	A$9.72 B	8.03%
2014	A$9.00 B	40.28%
2013	A$6.41 B	36.85%
2012	A$4.68 B	-1.78%
2011	A$4.77 B	18.94%
2010	A$4.01 B	7.69%
2009	A$3.72 B	-18.4%
2008	A$4.56 B	-11.06%
2007	A$5.13 B	-7.77%
2006	A$5.56 B	24.17%
2005	A$4.48 B	4.85%
2004	A$4.27 B	15.08%
2003	A$3.71 B	37.09%
2002	A$2.71 B	-49.18%
2001	A$5.33 B	18.44%
2000	A$4.50 B	36.27%
1999	A$3.30 B	-19.16%
1998	A$4.08 B	161.19%
1997	A$1.56 B	43.68%
1996	A$1.08 B

End of Day market cap according to different sources

On Dec 9th, 2025 the market cap of Alliant Energy was reported to be:

A$25.08 Billion

by Nasdaq

A$25.08 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Xcel Energy XEL	A$67.35 B	168.53%	🇺🇸 USA
CMS Energy CMS	A$32.23 B	28.49%	🇺🇸 USA
Allete ALE	A$5.91 B	-76.40%	🇺🇸 USA
MGE Energy MGEE	A$4.31 B	-82.78%	🇺🇸 USA
WEC Energy Group WEC	A$51.18 B	104.07%	🇺🇸 USA
Duke Energy DUK	A$134.76 B	437.27%	🇺🇸 USA
DTE Energy DTE	A$40.67 B	62.17%	🇺🇸 USA
Ameren AEE	A$40.00 B	59.47%	🇺🇸 USA

What is the market capitalization of a company?

The market capitalization sometimes referred as Marketcap, is the value of a publicly listed company.
In most cases it can be easily calculated by multiplying the share price with the amount of outstanding shares.

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Market capitalization of Alliant Energy (LNT)

Market cap: A$25.08 Billion