NiSource (NI) - Market capitalization

Market cap: NZ$33.63 Billion

As of December 2025 NiSource has a market cap of NZ$33.63 Billion. This makes NiSource the world's 1137th 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 NiSource from 1996 to 2025

End of year Market Cap

Year	Marketcap	Change
2025	NZ$33.63 B	10.54%
2024	NZ$30.42 B	75.3%
2023	NZ$17.35 B	-1.05%
2022	NZ$17.54 B	10.5%
2021	NZ$15.87 B	30.29%
2020	NZ$12.18 B	-22.87%
2019	NZ$15.79 B	12.25%
2018	NZ$14.07 B	15.6%
2017	NZ$12.17 B	18.01%
2016	NZ$10.31 B	13.4%
2015	NZ$9.09 B	-46.84%
2014	NZ$17.11 B	36.33%
2013	NZ$12.55 B	33.69%
2012	NZ$9.38 B	9.47%
2011	NZ$8.57 B	34.66%
2010	NZ$6.36 B	8.72%
2009	NZ$5.85 B	13%
2008	NZ$5.18 B	-23.33%
2007	NZ$6.76 B	-27.77%
2006	NZ$9.36 B	12.51%
2005	NZ$8.32 B	-3.7%
2004	NZ$8.63 B	-2.53%
2003	NZ$8.86 B	-7.17%
2002	NZ$9.54 B	-16.85%
2001	NZ$11.48 B	-19.49%
2000	NZ$14.26 B	235.92%
1999	NZ$4.24 B	-37.45%
1998	NZ$6.78 B	28.19%
1997	NZ$5.29 B	57.86%
1996	NZ$3.35 B

End of Day market cap according to different sources

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

NZ$34.00 Billion

by Nasdaq

NZ$33.72 Billion

by CompaniesMarketCap

Market capitalization for similar companies or competitors

Name	Marketcap	Market cap differencediff.	Country
Sempra Energy SRE	NZ$99.96 B	197.23%	🇺🇸 USA
Duke Energy DUK	NZ$152.43 B	353.27%	🇺🇸 USA
Atmos Energy ATO	NZ$46.37 B	37.89%	🇺🇸 USA
Chesapeake Utilities CPK	NZ$5.17 B	-84.62%	🇺🇸 USA
Genie Energy GNE	NZ$0.63 B	-98.10%	🇺🇸 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 NiSource (NI)

Market cap: NZ$33.63 Billion