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Aluminum
Stocks Ranked by
Market Capitalization

Name Market cap Price Price
change %
AA icon
1
Alcoa
AA
$13.5B
$13.5B $51.28 3.83%
CENX icon
2
Century Aluminum
CENX
$4.38B
$4.38B $44.20 1.24%
CSTM icon
3
Constellium
CSTM
$3.67B
$3.67B $27.08 1.69%
KALU icon
4
Kaiser Aluminum
KALU
$2.51B
$2.51B $153.80 0.85%

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 $24.1B.

The largest by market cap are Alcoa (AA) at $13.5B, Century Aluminum (CENX) at $4.38B and Constellium (CSTM) at $3.67B.

Among institutional investors, Constellium (CSTM) drew the most net new fund positions in Q2 2026: 110 funds opened new positions, taking total fund holders up 73 (23%) quarter-over-quarter.

  • Combined market cap: $24.1B across 4 stocks.
  • Largest constituent: Alcoa (AA), $13.5B market cap.
  • Most net new fund positions in Q2 2026: Constellium (CSTM), +73 holders.

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