Is Alliant Energy Corp an American company?
Yes — Alliant Energy Corp is an American company.
Alliant Energy Corp is incorporated in Wisconsin, United States and headquartered in Madison, Wisconsin. Its legal-entity record reports no foreign parent — the company is independently American-owned.
The evidence
- Legal name
- ALLIANT ENERGY CORP
- Incorporated in
- Wisconsin, United States
- Registered office
- MADISON, the United States
- Headquarters
- Madison, Wisconsin, United States
- Ultimate owner
- None reported (independent)
- Stock listing
- NASDAQ: LNT on NASDAQ
- LEI
- 5493009ML300G373MZ12
Source: GLEIF, the global Legal Entity Identifier registry · checked Jul 26, 2026. A US headquarters or stock listing does not always mean US incorporation — this page reports what the legal-entity registry actually records.
Alliant Energy Corp: origin questions
Is Alliant Energy Corp an American company?
Yes — Alliant Energy Corp is an American company. Alliant Energy Corp is incorporated in Wisconsin, United States and headquartered in Madison, Wisconsin. Its legal-entity record reports no foreign parent — the company is independently American-owned.
Where is Alliant Energy Corp incorporated?
Alliant Energy Corp is legally incorporated in Wisconsin, United States, according to its GLEIF legal-entity record.
Who owns Alliant Energy Corp?
Alliant Energy Corp reports no parent company in its legal-entity record — it is independently owned rather than a subsidiary.
Is Alliant Energy Corp traded on a US stock exchange?
Yes — Alliant Energy Corp trades under the ticker LNT on the NASDAQ.
See the full Alliant Energy Corp company profile — financials, stock data and trust credentials — or browse the directory of American companies.