NiSource Inc. (NI)
NYSE: NI · Real-Time Price · USD
43.87
+0.27 (0.62%)
At close: Oct 28, 2026, 4:00 PM EDT
44.43
+0.56 (1.28%)
After-hours: Oct 28, 2026, 4:46 PM EDT
NiSource Market Cap
NiSource has a market cap or net worth of $21.04 billion as of October 28, 2026. It is the 1,150th most valuable company in the world and the 476th biggest in the United States. Its market cap has increased by 2.17% in one year.
Market Cap
21.04B
Enterprise Value
39.24B
1-Year Change
2.17%
Global Rank
Country Rank
#476 United States
Category
ChartMarket Cap Chart
Since December 1, 1998, NiSource's market cap has increased from $3.49B to $21.04B, an increase of 502.94%. That is a compound annual growth rate of 6.65%.
| Date | Market Cap | % Change |
|---|---|---|
| Oct 28, 2026 | 21.04B | 5.57% |
| Dec 31, 2025 | 19.93B | 16.14% |
| Dec 31, 2024 | 17.16B | 56.33% |
| Dec 29, 2023 | 10.98B | -1.44% |
| Dec 30, 2022 | 11.14B | 2.71% |
| Dec 31, 2021 | 10.84B | 23.34% |
| Dec 31, 2020 | 8.79B | -15.47% |
| Dec 31, 2019 | 10.40B | 12.92% |
| Dec 31, 2018 | 9.21B | 6.52% |
| Dec 29, 2017 | 8.65B | 20.99% |
| Dec 30, 2016 | 7.15B | 14.93% |
| Dec 31, 2015 | 6.22B | -53.57% |
| Dec 31, 2014 | 13.39B | 30.01% |
| Dec 31, 2013 | 10.30B | 33.61% |
| Dec 31, 2012 | 7.71B | 15.19% |
| Dec 30, 2011 | 6.69B | 36.49% |
| Dec 31, 2010 | 4.90B | 15.62% |
| Dec 31, 2009 | 4.24B | 40.97% |
| Dec 31, 2008 | 3.01B | -41.91% |
| Dec 31, 2007 | 5.18B | -21.28% |
| Dec 29, 2006 | 6.58B | 15.69% |
| Dec 30, 2005 | 5.69B | -5.29% |
| Dec 31, 2004 | 6.00B | 4.27% |
| Dec 31, 2003 | 5.76B | 38.58% |
| Dec 31, 2002 | 4.16B | -12.86% |
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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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