NiSource, Inc. (NI)
NiSource Market Cap : 22.24B for May 18, 2026
Market Cap Chart
Historical Data
Market Capitalization Definition
Market Capitalization measures the total value of a company based on their stock price multiplied by the shares outstanding. This metric is important because it gives you an idea of the size of a company, and how the size has changed over time. When studying companies from a relative basis, it would make sense to compare companies that have a similar market capitalization because factors like market share, economies of scale, and business models would also be similar.
Market Cap Range, Past 5 Years
Market Cap Benchmarks
| DTE Energy Co. | 29.27B |
| Ameren Corp. | 29.39B |
| WEC Energy Group, Inc. | 35.53B |
| Duke Energy Corp. | 95.29B |
| Entergy Corp. | 50.05B |
Market Cap Related Metrics
| PE Ratio | 23.08 |
| PS Ratio | 3.240 |
| PEG Ratio | 2.787 |
| Price to Book Value | 2.302 |
| Price | 46.38 |
| Earnings Yield | 4.33% |
| PEGY Ratio | 2.139 |
| Operating PE Ratio | 11.66 |
| Normalized PE Ratio | 23.07 |