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NISOURCE INC.
NI - Company ID 0001111711
Market cap$19.98 B
Rank#622
Filings2,532
Market capitalization of NISOURCE INC.
As of 2026-09-09, NISOURCE INC. (NI) has a market capitalization of $19.98 B, making it the #622 most valuable US-listed company.
Recent market cap readings
| Date | Market cap |
|---|---|
| 2026-09-09 | $19.98 B |
| 2026-09-08 | $20.09 B |
| 2026-09-07 | $19.84 B |
| 2026-09-06 | $19.84 B |
| 2026-09-05 | $19.84 B |
| 2026-09-04 | $19.80 B |
| 2026-09-03 | $19.97 B |
| 2026-09-02 | $19.68 B |
| 2026-09-01 | $19.64 B |
| 2026-08-31 | $19.63 B |
| 2026-08-30 | $19.45 B |
| 2026-08-29 | $19.45 B |
Market Cap of similar companies
Frequently asked questions
What is NISOURCE INC.'s market cap?
As of 2026-09-09, NISOURCE INC. (NI) has a market capitalization of $19.98 B, making it the #622 most valuable US-listed company.
Where does NISOURCE INC. rank by market cap?
NISOURCE INC. is the #622 largest US-listed company by market capitalization.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.