ALLIANT ENERGY CORP — Investor Relations & Filings
Alliant Energy Corporation is a public utility holding company providing regulated energy services. Its core activities include the generation and distribution of electricity and the distribution of natural gas. The company serves approximately one million electric and 425,000 natural gas customers, primarily in Iowa and Wisconsin. Alliant Energy emphasizes a balanced energy mix and is a significant owner-operator of regulated wind and solar assets. The company's mission is to deliver energy solutions and services safely, efficiently, and responsibly to its customers and communities.
Recent filings
| Filing | Released | Lang | Actions |
|---|---|---|---|
| 10-Q - ALLIANT ENERGY CORP (0000352541) (Filer) | 2026-05-01 | English | |
| SCHEDULE 13G/A - ALLIANT ENERGY CORP (0000352541) (Subject) | 2026-03-26 | English | |
| 8-K - ALLIANT ENERGY CORP (0000352541) (Filer) | 2026-03-19 | English | |
| 424B5 - ALLIANT ENERGY CORP (0000352541) (Filer) | 2026-03-19 | English | |
| 4/A - ALLIANT ENERGY CORP (0000352541) (Issuer) | 2026-03-19 | English | |
| 4 - ALLIANT ENERGY CORP (0000352541) (Filer) | 2026-02-24 | English |
Market data
Market data not available
Price history
Peer group · Electric power transmission and distribution activities
| Company | Ticker | Country | Sector |
|---|---|---|---|
|
ATCO LTD.
Diversified global corporation focused on essential infrast…
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ACO.X | CA | Electricity, gas, steam and air… |
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AUSNET SERVICES HOLDINGS PTY LTD
Operates regulated electricity and gas networks and commerc…
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ANV | AU | Electricity, gas, steam and air… |
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AVISTA CORP
An energy company that produces, transmits, and distributes…
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AVA | US | Electricity, gas, steam and air… |
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AXIA ENERGIA NORDESTE S.A.
Operates power transmission concessions and renewable energ…
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— | BR | Electricity, gas, steam and air… |
|
AYEN ENERJİ A.Ş.
Generates, distributes, and trades electricity from hydro, …
|
AYEN | TR | Electricity, gas, steam and air… |
|
BKW AG
Plans, builds, and operates infrastructure for energy produ…
|
BKW | CH | Electricity, gas, steam and air… |
|
BLACK HILLS CORP /SD/
A regulated utility that generates and distributes electric…
|
BKH | US | Electricity, gas, steam and air… |
|
Blink Charging Co.
Owner, operator, and provider of EV charging equipment and …
|
BLNK | US | Electricity, gas, steam and air… |
|
BluGo S.A.
Manages a franchise network of charging points for electric…
|
YOL | PL | Electricity, gas, steam and air… |
|
Calibre Energy Inc.
Delivers comprehensive Battery Energy Storage Systems for u…
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CABE | CA | Electricity, gas, steam and air… |
ALLIANT ENERGY CORP via the API
Pull this company's filings, identifiers, and metadata as JSON or Markdown. Authenticate with your API key, then query by company ID, ISIN, or LEI. Full schema documented in the OpenAPI spec.
Endpoints
| GET | /api/companies/30351/ | Company identity, sector, listing, identifiers |
| GET | /api/filings/?company=30351 | Paginated list of all filings (filterable by type, date, language) |
| GET | /api/filings/{id}/ | Single filing — metadata, document URL, processing status |
| GET | /api/filings/{id}/markdown/ | Filing content as Markdown (PDF → text/tables/figures) |
| GET | /api/isins/?company=30351 | All ISINs registered to this company |
| GET | /api/filing-types/ | Reference: every filing-type code + category |
cURL
$ curl https://api.financialreports.eu/api/filings/?company=30351 \ -H "x-api-key: $FR_API_KEY" \ -H "Accept: application/json"
Python
import requests r = requests.get( "https://api.financialreports.eu/api/filings/", params={"company": 30351}, headers={"x-api-key": API_KEY}, ) filings = r.json()["results"]
MCP server
// MCP server URL https://mcp.financialfilings.com/mcp // Once connected, the LLM can query this company directly: "Pull the latest 5 filings for ALLIANT ENERGY CORP (id: 30351)"
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