Market Cap

NiSource Inc. Market Capitalization:

$18.55 Billion

USD as of July 1, 2025

business NiSource Inc. Company Profile

NiSource Inc. Main Stock Listing

NYSE: NI

Market Capitalization History of NiSource Inc.

Market capitalizations are calculated from the opening stock price at the beginning of each month.

Top Competitors by Market Capitalization

Industry: Utilities—Regulated Gas
Company Market Cap (USD)
Naturgy Energy Group, SA $30.81 B
Atmos Energy Corporation $24.07 B
CenterPoint Energy, Inc. $23.35 B
Snam S.p.A. $20.37 B
The Hong Kong and China Gas Company Ltd $15.90 B
Sector: Utilities
Company Market Cap (USD)
NextEra Energy $150.32 B
Iberdrola, SA $120.04 B
China Yangtze Power Co. Ltd $103.31 B
The Southern Company $100.28 B
Enel SpA $98.84 B

Yearly evolution of NiSource Inc. market cap

Date Market Cap YoY Change
Jan. 1, 2025 $17.55 B 57.88%
Jan. 1, 2024 $11.12 B 0.89%
Jan. 1, 2023 $11.02 B -5.95%
Jan. 1, 2022 $11.71 B 31.74%
Jan. 1, 2021 $8.89 B -24.43%
Jan. 1, 2020 $11.77 B 7.44%
Jan. 1, 2019 $10.95 B 10.53%
Jan. 1, 2018 $9.91 B 10.33%
Jan. 1, 2017 $8.98 B 6.47%
Jan. 1, 2016 $8.43 B 23.60%
Jan. 1, 2015 $6.82 B 25.87%
Jan. 1, 2014 $5.42 B 27.16%
Jan. 1, 2013 $4.26 B 18.92%
Jan. 1, 2012 $3.59 B 22.07%
Jan. 1, 2011 $2.94 B 30.67%
Jan. 1, 2010 $2.25 B 47.21%
Jan. 1, 2009 $1.53 B -48.92%
Jan. 1, 2008 $2.99 B -20.38%
Jan. 1, 2007 $3.75 B 15.93%
Jan. 1, 2006 $3.24 B -10.35%
Jan. 1, 2005 $3.61 B 9.05%
Jan. 1, 2004 $3.31 B 18.18%
Jan. 1, 2003 $2.80 B -14.57%
Jan. 1, 2002 $3.28 B -22.68%
Jan. 1, 2001 $4.24 B

Market capitalization is calculated from the opening stock price at the beginning of each year.

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NiSource Inc. Categories

United States languages Utilities languages Utilities—Regulated Gas
United States Utilities United States Utilities—Regulated Gas

Stocks & Indices

NiSource Inc. has the following listings and related stock indices.


Stock: NYSE: NI

Stock: Bovespa: N1IS34

Stock: FSX: NOU

Stock: NYSE: NIMC

Stock: NYSE: NI.PR.B

What is a company's market capitalization?

The market capitalization of a company, more simply referred to as "market cap", is the total market value of a publicly traded company's outstanding shares. It is often considered as a key indicator of what a company is worth.