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ALLIANT ENERGY CORP
LNT - CIK 0000352541
Market cap$18.85 B
Rank#640
SEC filings3,106
Market capitalization of ALLIANT ENERGY CORP
As of 2026-06-10, ALLIANT ENERGY CORP (LNT) has a market capitalization of $18.85 B, making it the #640 most valuable US-listed company.
Recent market cap readings
| Date | Market cap |
|---|---|
| 2026-06-10 | $18.85 B |
| 2026-05-29 | $18.51 B |
| 2026-05-28 | $19.05 B |
| 2026-05-26 | $19.05 B |
| 2026-05-25 | $19.10 B |
| 2026-05-24 | $19.10 B |
| 2026-05-22 | $19.10 B |
Readings accumulate daily as market data refreshes, combining SEC-reported share counts with live prices.
Market Cap of similar companies
Frequently asked questions
What is ALLIANT ENERGY CORP's market cap?
As of 2026-06-10, ALLIANT ENERGY CORP (LNT) has a market capitalization of $18.85 B, making it the #640 most valuable US-listed company.
Where does ALLIANT ENERGY CORP rank by market cap?
ALLIANT ENERGY CORP is the #640 largest US-listed company by market capitalization.
Data parsed from SEC EDGAR XBRL filings. See the full market cap rankings.