Thinking about whether to buy, sell, or simply hold on to your Rio Tinto Group shares? You are not alone. Lately, the market has kept investors on their toes with some notable swings in mining stocks, and Rio Tinto has certainly had its share of ups and downs. In just the last month, the stock slid by 1.4% with a slight 1.7% dip over the week. On a broader time frame, the story looks a bit different. The stock is up 2.7% over the past year and has delivered a solid 38.7% gain across five years.

Part of this volatility comes from shifting global commodity demand and supply chain developments, which have been reshaping investor sentiment. While short-term performance has been soft, the long-term trajectory reflects both resilience and growth potential. This hints that the market might be recalibrating its risk assessment of the mining sector as a whole.

If you are curious about value, here is an interesting figure: Rio Tinto scores a 5 out of 6 on our value checklist. This means it looks undervalued by most of the metrics that matter. The big question now is, how does that translate for investors today? In the coming sections, we will break down the different ways analysts determine what Rio Tinto is really worth. Stick around, because there is a smarter way to interpret these numbers that could make all the difference.

Why Rio Tinto Group is lagging behind its peers

The Discounted Cash Flow (DCF) model estimates a company’s value by projecting its future cash flows and then discounting them back to today at a proper rate. This approach provides insight into what Rio Tinto Group might really be worth, based on its ability to generate cash over time.

According to this model, Rio Tinto’s latest reported Free Cash Flow (FCF) sits at $7.08 Billion. Analyst projections indicate that FCF is expected to reach $14.6 Billion by 2028, with a steady climb based on industry expectations and company guidance. Beyond the five-year analyst window, Simply Wall St extrapolates further and, by the end of a ten-year period, Rio’s annual free cash flows could surpass $34.5 Billion. All projections are presented in USD, as that is the company’s reporting currency.

After calculating these cash flow numbers, the DCF analysis provides an intrinsic fair value per share of £201.01 for Rio Tinto Group. This represents a significant difference compared to the current market price, suggesting a 77.1% discount and indicating the stock is strongly undervalued based on long-term cash flow fundamentals.

Result: UNDERVALUED

Head to the Valuation section of our Company Report for more details on how we arrive at this Fair Value for Rio Tinto Group.

Our Discounted Cash Flow (DCF) analysis suggests Rio Tinto Group is undervalued by 77.1%. Track this in your watchlist or portfolio, or discover more undervalued stocks.

The Price-to-Earnings (PE) ratio is a go-to metric for valuing established, profitable companies like Rio Tinto Group. It tells investors how much they are paying for each pound of earnings, making it an especially relevant tool when a business is consistently generating profits. Because a PE ratio gives insight into whether a stock is cheap or expensive relative to its earnings, it is a natural fit for a company with Rio Tinto’s profitability profile.

However, deciding what a “normal” or “fair” PE ratio is takes more than glancing at the current number. Growth expectations and perceived risk play a major role in shaping the PE multiple that a business can justify. Faster growing, lower-risk companies usually deserve a higher PE than more stagnant or risky businesses.

At the moment, Rio Tinto Group trades at a PE ratio of 9.9x. That is notably lower than the peer average of 34.9x and the industry average of 11.6x. This hints that the market isn’t giving the company credit for its current earnings. To provide a more tailored benchmark, Simply Wall St’s proprietary “Fair Ratio” for Rio Tinto is 20.0x. The Fair Ratio stands out because it adjusts for factors like earnings growth, risk level, profit margin, industry, and market cap, offering a smarter look than plain peer or industry comparisons.

Comparing Rio Tinto’s actual PE of 9.9x to its Fair Ratio of 20.0x suggests the stock is significantly undervalued on an earnings basis, even after accounting for the nuances Simple Wall St's model includes.

Result: UNDERVALUED

PE ratios tell one story, but what if the real opportunity lies elsewhere? Discover companies where insiders are betting big on explosive growth.

Earlier we mentioned that there is an even better way to understand valuation, so let us introduce you to Narratives. A Narrative is your personal investment story, where you combine your insights about a company with your forecasts, such as future revenue, earnings, and profit margins, to generate your own fair value. Narratives connect the bigger picture of Rio Tinto Group’s future directly to financial forecasts and then to a specific price target, making it easy to frame your buy, hold, or sell decisions clearly. On Simply Wall St’s Community page, millions of investors use Narratives to compare their fair value with the current market price, helping them see whether the stock looks cheap, expensive, or fairly valued based on their particular view. Narratives update dynamically when fresh news or financials are released, so your perspective stays relevant. For example, some users see Rio Tinto benefiting from global demand for copper and lithium, setting their fair value above £66 per share. Others focus on commodity headwinds and assign a fair value closer to £41, demonstrating how the Narrative tool helps you make smarter, individualized decisions with confidence and up-to-date information. Do you think there's more to the story for Rio Tinto Group? Create your own Narrative to let the Community know!

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.

Companies discussed in this article include RIO.L.

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