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Aluminum
Stocks Ranked by
Market Capitalization

Name Market cap Price Price
change %
AA icon
1
Alcoa
AA
$10.9B
$10.9B $41.45 2.55%
CENX icon
2
Century Aluminum
CENX
$3.47B
$3.47B $35.03 2.43%
CSTM icon
3
Constellium
CSTM
$3.45B
$3.45B $25.47 0%
KALU icon
4
Kaiser Aluminum
KALU
$2.41B
$2.41B $147.25 0.79%

Aluminum Stocks at a Glance

Aluminum companies smelt, refine, and distribute aluminum and related products. Smelting is energy-intensive, so power costs and global capacity set the cost curve, with demand tied to transportation, construction, and packaging markets.

There are 4 Aluminum industry stocks tracked by Wall St. Rank, worth a combined $20.3B.

The largest by market cap are Alcoa (AA) at $10.9B, Century Aluminum (CENX) at $3.47B and Constellium (CSTM) at $3.45B.

Among institutional investors, Constellium (CSTM) drew the most net new fund positions in Q2 2026: 111 funds opened new positions, taking total fund holders up 75 (24%) quarter-over-quarter.

  • Combined market cap: $20.3B across 4 stocks.
  • Largest constituent: Alcoa (AA), $10.9B market cap.
  • Most net new fund positions in Q2 2026: Constellium (CSTM), +75 holders.

Market caps and prices updated daily; fund activity based on aggregated SEC 13F filings for Q2 2026.