Alliant Energy Market Cap

Alliant Energy has a market cap or net worth of $18.85 billion as of November 6, 2026. It is the 1,232nd most valuable company in the world and the 493rd biggest in the United States. Its market cap has increased by 9.72% in one year.

Market Cap

18.85B

Enterprise Value

31.38B

1-Year Change

9.72%

Global Rank

#1,232

Country Rank

#493 United States

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Since December 1, 1998, Alliant Energy's market cap has increased from $2.34B to $18.85B, an increase of 705.98%. That is a compound annual growth rate of 7.75%.

Market Cap History

Date	Market Cap	% Change
Nov 6, 2026	18.85B	12.79%
Dec 31, 2025	16.71B	10.12%
Dec 31, 2024	15.18B	15.92%
Dec 29, 2023	13.09B	-5.54%
Dec 30, 2022	13.86B	-9.95%
Dec 31, 2021	15.39B	19.58%
Dec 31, 2020	12.87B	-2.14%
Dec 31, 2019	13.15B	31.93%
Dec 31, 2018	9.97B	1.18%
Dec 29, 2017	9.85B	14.29%
Dec 30, 2016	8.62B	21.76%
Dec 31, 2015	7.08B	-3.92%
Dec 31, 2014	7.37B	28.71%
Dec 31, 2013	5.72B	17.47%
Dec 31, 2012	4.87B	-0.45%
Dec 30, 2011	4.90B	20.10%
Dec 31, 2010	4.08B	21.75%
Dec 31, 2009	3.35B	3.88%
Dec 31, 2008	3.22B	-28.20%
Dec 31, 2007	4.49B	2.37%
Dec 29, 2006	4.38B	33.80%
Dec 30, 2005	3.28B	-0.82%
Dec 31, 2004	3.30B	19.86%
Dec 31, 2003	2.76B	81.67%
Dec 31, 2002	1.52B	-37.15%

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Market Capitalization

Market capitalization, also called net worth, is the total value of all of a company's outstanding shares. It is calculated by multiplying the stock price by the number of shares outstanding.

Formula: Market Cap = Stock Price * Shares Outstanding

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