United States

Top 5 largest US Companies in the Aluminum industry by Market Cap

This is the list of the largest public listed companies in the Aluminum industry from the United States by market capitalization with links to their reference stock.

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Top Aluminum Companies from the United States as of Jan. 01, 2026

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Rank Company Market Cap (USD) Country Sector Industry
1 Alcoa Corporation $14.64 B United States US Basic Materials US Aluminum
2 Century Aluminum Company $3.82 B United States US Basic Materials US Aluminum
3 Kaiser Aluminum Corporation $1.95 B United States US Basic Materials US Aluminum
4 Ormet Corp United States US Basic Materials US Aluminum
5 Noranda Aluminum Holding Corp United States US Basic Materials US Aluminum

Top Aluminum Companies from the United States as of Jan. 01, 2026

1. Alcoa Corporation

Company Profile: Alcoa Corporation
Market Cap (USD): $14.64 B
Country: United States
Sector: US Basic Materials
Industry: US Aluminum

2. Century Aluminum Company

Company Profile: Century Aluminum Company
Market Cap (USD): $3.82 B
Country: United States
Sector: US Basic Materials
Industry: US Aluminum

3. Kaiser Aluminum Corporation

Company Profile: Kaiser Aluminum Corporation
Market Cap (USD): $1.95 B
Country: United States
Sector: US Basic Materials
Industry: US Aluminum

4. Ormet Corp

Company Profile: Ormet Corp
Country: United States
Sector: US Basic Materials
Industry: US Aluminum

5. Noranda Aluminum Holding Corp

Company Profile: Noranda Aluminum Holding Corp
Country: United States
Sector: US Basic Materials
Industry: US Aluminum

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