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NISOURCE INC.
NI - CIK 0001111711
Market cap$22.35 B
Rank#581
SEC filings2,530
Market capitalization of NISOURCE INC.
As of 2026-06-11, NISOURCE INC. (NI) has a market capitalization of $22.35 B, making it the #581 most valuable US-listed company.
Recent market cap readings
| Date | Market cap |
|---|---|
| 2026-06-11 | $22.35 B |
| 2026-06-10 | $22.36 B |
| 2026-05-29 | $22.30 B |
| 2026-05-28 | $22.76 B |
| 2026-05-26 | $22.96 B |
| 2026-05-25 | $22.94 B |
| 2026-05-24 | $22.94 B |
| 2026-05-22 | $22.94 B |
Readings accumulate daily as market data refreshes, combining SEC-reported share counts with live prices.
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Frequently asked questions
What is NISOURCE INC.'s market cap?
As of 2026-06-11, NISOURCE INC. (NI) has a market capitalization of $22.35 B, making it the #581 most valuable US-listed company.
Where does NISOURCE INC. rank by market cap?
NISOURCE INC. is the #581 largest US-listed company by market capitalization.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.