Alliant Energy (LNT) - Market capitalization

Market cap: S$23.11 Billion

As of February 2026 Alliant Energy has a market cap of S$23.11 Billion. This makes Alliant Energy the world's 1274th 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	S$23.11 B	7.34%
2025	S$21.53 B	3.68%
2024	S$20.76 B	20.12%
2023	S$17.28 B	-6.95%
2022	S$18.57 B	-10.7%
2021	S$20.80 B	22.19%
2020	S$17.02 B	-5.81%
2019	S$18.07 B	32.66%
2018	S$13.62 B	3.41%
2017	S$13.17 B	5.62%
2016	S$12.47 B	24.47%
2015	S$10.02 B	2.94%
2014	S$9.73 B	34.23%
2013	S$7.25 B	21.7%
2012	S$5.95 B	-5.99%
2011	S$6.33 B	20.7%
2010	S$5.25 B	11.73%
2009	S$4.70 B	1.99%
2008	S$4.60 B	-28.67%
2007	S$6.46 B	-4.01%
2006	S$6.73 B	23.2%
2005	S$5.46 B	1.18%
2004	S$5.40 B	15.04%
2003	S$4.69 B	77.1%
2002	S$2.65 B	-47.41%
2001	S$5.04 B	15.48%
2000	S$4.36 B	20.69%
1999	S$3.61 B	-12.51%
1998	S$4.13 B	140.38%
1997	S$1.71 B	41.96%
1996	S$1.21 B

End of Day market cap according to different sources

On Feb 21st, 2026 the market cap of Alliant Energy was reported to be:

S$23.11 Billion

by Nasdaq

S$23.11 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Ameren AEE	S$38.51 B	66.64%	🇺🇸 USA
CMS Energy CMS	S$29.43 B	27.35%	🇺🇸 USA
DTE Energy DTE	S$38.13 B	64.98%	🇺🇸 USA
WEC Energy Group WEC	S$47.11 B	103.87%	🇺🇸 USA
Duke Energy DUK	S$124.83 B	440.13%	🇺🇸 USA
Xcel Energy XEL	S$61.08 B	164.28%	🇺🇸 USA
MGE Energy MGEE	S$3.74 B	-83.80%	🇺🇸 USA
Allete ALE	S$4.99 B	-78.39%	🇺🇸 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: S$23.11 Billion