• If you are wondering whether Century Aluminum at around US$66.30 is still offering value or has already run too far ahead, the numbers give you a lot to think about.
• The share price has seen sharp moves recently, with returns of 6.0% over 7 days, 23.8% over 30 days, 61.9% year to date, 352.8% over 1 year and a very large gain over 3 years relative to its starting level.
• These moves have put Century Aluminum firmly on investors' radars, with attention now firmly on whether the current price fairly reflects the business. That sets the context for looking past recent returns and focusing on what different valuation tools are actually saying about the stock.
• On Simply Wall St's 6 point valuation framework, Century Aluminum scores 2 out of 6. The rest of this article will walk through those valuation checks, compare methods such as multiples and discounted cash flow, and finish with a broader way to think about what the current price really implies.

Century Aluminum scores just 2/6 on our valuation checks. See what other red flags we found in the full valuation breakdown.

Approach 1: Century Aluminum Discounted Cash Flow (DCF) Analysis

A Discounted Cash Flow, or DCF, model projects a company’s future cash flows and then discounts them back to today’s dollars to estimate what the business might be worth right now.

For Century Aluminum, the model used is a 2 Stage Free Cash Flow to Equity approach, based on cash flows in $. The latest twelve month free cash flow (FCF) is about $83.8 million. Analysts provide free cash flow estimates out to 2028, with Simply Wall St extending those projections further to build a 10 year path of expected cash flows, all kept below $2b and treated in millions of dollars.

On these projections, the DCF model arrives at an estimated intrinsic value of about $263.02 per share. Compared with the current share price of around $66.30, this implies the stock is 74.8% undervalued according to this specific cash flow based approach.

This is a large gap, so readers should treat the DCF as a useful cross check, not a precise target.

Result: UNDERVALUED

Our Discounted Cash Flow (DCF) analysis suggests Century Aluminum is undervalued by 74.8%. Track this in your watchlist or portfolio, or discover 62 more high quality undervalued stocks.

Approach 2: Century Aluminum Price vs Sales

For companies that are already generating revenue, the P/S ratio can be a useful yardstick because it ties the share price directly to the sales the business is producing, regardless of short term swings in profit margins.

What counts as a reasonable P/S ratio often reflects how fast investors expect sales to grow and how much risk they see in those future revenues. Higher expected growth and lower perceived risk can support a higher multiple, while slower growth or higher uncertainty usually point to a lower one.

Century Aluminum currently trades on a P/S of 2.60x. That sits close to the broader Metals and Mining industry average of about 2.57x, but above the peer group average of around 0.77x. To go a step further, Simply Wall St’s Fair Ratio for Century Aluminum is 1.41x. This is the P/S level suggested after factoring in items such as earnings growth, profit margins, size, industry and company specific risks.

This Fair Ratio can be more informative than a simple industry or peer comparison because it adjusts for company characteristics rather than treating all producers as the same. Compared with the current 2.60x, the 1.41x Fair Ratio points to the shares looking expensive on this measure.

Result: OVERVALUED

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Upgrade Your Decision Making: Choose your Century Aluminum Narrative

Earlier the article mentioned that there is an even better way to think about valuation. Meet Narratives, a simple way for you to attach a clear story about Century Aluminum to the numbers you already care about such as fair value, and estimates of future revenue, earnings and margins, then keep that story, or Narrative, updated as conditions change.

On Simply Wall St’s Community page, Narratives let you connect a view like “CENX: Section 232 Tariffs And Oklahoma Smelter Plans Will Shape Future Cash Flows” with a fair value of US$66, or a more optimistic stance with fair value around US$61, or a more cautious one closer to US$37. You can then compare each Narrative’s fair value to the current share price to help you decide whether the stock looks attractive, fully priced or expensive under that specific story.

Because Narratives are refreshed when new earnings, news or model inputs arrive, you are not locked into a static view. You can quickly see how a change in expected revenue growth, profit margins, tariffs or project timing flows through to the forecast and the fair value behind your own Century Aluminum Narrative.

Do you think there's more to the story for Century Aluminum? Head over to our Community to see what others are saying!

This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.