Alliant Energy (LNT) - Market capitalization

Market cap: C$25.71 Billion

As of March 2026 Alliant Energy has a market cap of C$25.71 Billion. This makes Alliant Energy the world's 1202th 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 2026

End of year Market Cap

Year	Marketcap	Change
2026	C$25.71 B	11.96%
2025	C$22.96 B	4.76%
2024	C$21.92 B	26.27%
2023	C$17.36 B	-7.67%
2022	C$18.80 B	-4.12%
2021	C$19.61 B	19.52%
2020	C$16.41 B	-6.29%
2019	C$17.51 B	28.89%
2018	C$13.58 B	9.69%
2017	C$12.38 B	6.92%
2016	C$11.58 B	17.85%
2015	C$9.82 B	14.95%
2014	C$8.55 B	40.32%
2013	C$6.09 B	25.75%
2012	C$4.84 B	-2.68%
2011	C$4.97 B	22.17%
2010	C$4.07 B	15.69%
2009	C$3.52 B	-10.09%
2008	C$3.91 B	-12.52%
2007	C$4.47 B	-12.36%
2006	C$5.11 B	33.78%
2005	C$3.82 B	-3.9%
2004	C$3.97 B	10.93%
2003	C$3.58 B	48.55%
2002	C$2.41 B	-44.37%
2001	C$4.33 B	14.96%
2000	C$3.77 B	20.44%
1999	C$3.13 B	-18.61%
1998	C$3.84 B	164.15%
1997	C$1.45 B	22.92%
1996	C$1.18 B

End of Day market cap according to different sources

On Mar 16th, 2026 the market cap of Alliant Energy was reported to be:

C$25.71 Billion

by Nasdaq

C$25.71 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Ameren AEE	C$42.71 B	66.13%	🇺🇸 USA
CMS Energy CMS	C$32.83 B	27.71%	🇺🇸 USA
DTE Energy DTE	C$42.46 B	65.17%	🇺🇸 USA
WEC Energy Group WEC	C$52.55 B	104.38%	🇺🇸 USA
Duke Energy DUK	C$142.10 B	452.68%	🇺🇸 USA
Xcel Energy XEL	C$69.72 B	171.19%	🇺🇸 USA
MGE Energy MGEE	C$3.77 B	-85.30%	🇺🇸 USA
Allete ALE	C$5.40 B	-78.99%	🇺🇸 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: C$25.71 Billion