Century Aluminum vs Kaiser Aluminum
Kaiser Aluminum reported revenue of $3.4 billion in fiscal 2025, 1.3 times Century Aluminum's $2.5 billion in fiscal 2025. Century Aluminum's revenue grew 13.8% in its latest year, and Kaiser Aluminum's grew 11.5%. Century Aluminum had an operating margin of 6.2%, against 5.6% at Kaiser Aluminum. Free cash flow was $85 million at Century Aluminum and −$26 million at Kaiser Aluminum.
Side by side
| Century Aluminum | Kaiser Aluminum | |
|---|---|---|
| Latest fiscal year | FY2025, Dec 31, 2025 | FY2025, Dec 31, 2025 |
| Revenue | $2.5B | $3.4B |
| Revenue growth | 13.8% | 11.5% |
| Revenue growth a year, last 5 years | 9.5% | 23.5% |
| Gross margin | 10.1% | 13.1% |
| Operating margin | 6.2% | 5.6% |
| Net margin | 1.6% | 3.3% |
| Free cash flow | $85M | −$26M |
| Free cash flow margin | 3.4% | −0.8% |
| Return on capital | — | 7.7% |
| Net debt to EBITDA | — | 3.4x |
| Dividends and buybacks | $0M | $51M |
| Change in diluted share count | −3.1% | 1.9% |
| Last close | $31.80 | $105.47 |
| P/E at the last close | 5.5× | 8.2× |
| Insider trades, last 12 months | sold $625.3 million | sold $16.7 million |
| Piotroski F-score | — | 7 of 9 |
Amounts in each company's own currency, US$ unless marked (a foreign company may report in another), each company's latest fiscal year from its 10-K, or 20-F or 40-F for a foreign company. Growth rates compare with the year before; the five-year rate is the average a year. Free cash flow is cash from operations minus capital spending; return on capital is after-tax operating income over the money invested in the business; P/E is the last close over the latest earnings per share. Banks are measured differently (return on equity, efficiency ratio), so some rows apply to one company only.
Ten years
Revenue
US$ billions, fiscal years
Century AluminumKaiser Aluminum
Operating margin
Percent of revenue
Century AluminumKaiser Aluminum
Free cash flow
US$ billions. Cash from operations minus capital expenditure.
Century AluminumKaiser Aluminum
Source: the companies' Form 10-K filings, from SEC EDGAR, and the last close. For information only, not investment advice: the figures describe results, not which company is the better investment. The Filing Desk is not affiliated with either company. Full figures on the Century Aluminum and Kaiser Aluminum pages.