TotalMarketCap

Nisource

NINYSE United StatesUtilitiesPower Generation

Market cap

$19.437 B

$40.53 -0.03%

Close of 9 Oct 2026

As of 9 Oct 2026, Nisource (NI) has a market capitalization of $19.4B. Market cap measures the value of outstanding equity at market prices; company totals combine applicable share classes. Prices and market caps come from Nasdaq, with financial fundamentals from SEC filings. See sources and calculation details.

Revenue

$6.52B

#557 by revenue

Earnings

$929.5M

#413 by earnings

Shares outstanding

479,560,100

Latest filing cover page

P/E ratio

20.9

Cap ÷ net income

Power Generation, ranked by market cap

All 20 →
  1. #8AmerenAEE$28.2B
  2. #9Cms EnergyCMS$20.5B
  3. #10NisourceNI$19.4B
  4. #11EvergyEVRG$18.6B
  5. #12Alliant EnergyLNT$17.0B

What if Nisource were worth as much as…

Open the what-if tool →

Gold $29.1T

$60,601.07

Per share 1,495× higher

Bitcoin $1.66T

$3,462.72

Per share 85.4× higher

Nvidia $5.55T

$11,582.63

Per share 286× higher

Or at a round number

$50.0B$100.0B$200.0B$500.0B

Where these numbers come from

Share counts and financials for Nisource are taken from its own SEC filings via EDGAR: public record, not an estimate. Market cap is shares outstanding multiplied by the latest close. Last updated 10 Oct 2026. Read the methodology.