The short version

From the latest prices and each company's SEC filings. Who's ahead on each measure, not which to buy.

  • Alcoa is the larger company, worth $10.2B, about 3.1 times Constellium Nv.
  • Alcoa grew revenue faster over the last year (+31.4% vs +24.4%).
  • On earnings, Constellium Nv is the cheaper stock (7.6x vs 9.9x).
  • Constellium Nv's price assumes faster free cash flow growth: about 5% a year, against 4% for Alcoa (reverse DCF).

Side by side

The stronger figure is shaded where higher (or, for valuation multiples, lower) reads as better. How the implied growth works.

MeasureAACSTM
Market cap$10.2B$3.2B
Share price$42.20$25.81
Revenue (last fiscal year)$12.8B$8.4B
Free cash flow (last fiscal year)$567M$159M
Revenue growth, last year+31.4%+24.4%
Revenue growth per year, last 5 fiscal years+1.4%-0.3%
Operating margin——
Net margin9.4%4.9%
Return on equity17.3%38.9%
P/E (trailing)9.89x7.61x
Price / free cash flow17.9x20.4x
EV / EBITDA5.74x5.03x
FCF growth the price implies3.6%5.3%
Dividend yield0.99%—
Debt / equity1.28x4.21x
Fundamental gradeBC
Superinvestors holding it44
Insider purchases, last 12 months01

Results from SEC filings

Revenue and free cash flow by fiscal year, from each company's 10-K filings.

Alcoa

YearRevenueFree cash flowOp. margin
2021$12.2B$530M—
2022$12.5B$342M—
2023$10.6B-$440M—
2024$11.9B$42M—
2025$12.8B$567M—

Constellium Nv

YearRevenueFree cash flowOp. margin
2022$8.5B$76M—
2023$7.8B$66M—
2024$7.3B-$112M—
2025$8.4B$159M—

Where the revenue comes from

Alcoa · by products, 2025

Aluminum$8.5B65%
Alumina$3.7B28%
Bauxite$727M6%
Energy$190M1%

Constellium Nv · by segments, 2025

P&ARP$5.1B59%
A&T$2.0B23%
AS&I$1.6B18%
H&C$5M0%
Compare them in fullFifteen years of statements, quarterly results, DCF and IRR models, and any number of peers side by side.
Open AA in Investingly

Questions

Which is bigger, Alcoa or Constellium Nv?

Alcoa (AA), at $10.2B against $3.2B.

Is AA or CSTM cheaper?

By trailing P/E, Constellium Nv (7.61x) is cheaper than Alcoa (9.89x). A lower multiple can also mean the market expects less growth.

Which grows faster, AA or CSTM?

Alcoa: revenue grew +31.4% over the last year, against +24.4%.

Prices and ratios as of the last daily update; statements from SEC filings. Information only, not investment advice.