TotalMarketCap

Market cap

$19.071 B

$73.53 -0.33%

Close of 6 Nov 2026

As of 6 Nov 2026, Alliant Energy (LNT) has a market capitalization of $19.1B. 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

$4.36B

#735 by revenue

Earnings

$810.0M

#454 by earnings

Shares outstanding

258,277,037

Latest filing cover page

P/E ratio

23.5

Cap ÷ net income

Power Generation, ranked by market cap

All 20 →
  1. #10NisourceNI$21.3B
  2. #11EvergyEVRG$20.1B
  3. #12Alliant EnergyLNT$19.1B
  4. #13Entergy New OrleansENJ$8.82B
  5. #14NorthWestern Energy GroupNWE$5.06B

What if Alliant Energy were worth as much as…

Open the what-if tool →

Or at a round number

Where these numbers come from

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