Banco Santander has delivered very strong share gains over the past five years, which puts a spotlight on whether the current price is properly supported by the returns the bank earns on its capital. With that kind of track record now intersecting with fresh headlines around both AI progress and legal scrutiny, the key question is how much of those capital returns are already built into the stock.
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Over the last 5 years the share price has climbed 285.8%, which makes the link between Santander's current valuation and the returns it generates on its capital especially important for anyone looking at the company today.
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Santander reports that its AI projects created €194 million of business value in the first nine months of 2026, which can influence expectations for future efficiency, profitability and the pace at which the bank can reinvest capital at attractive rates.
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Prefer to judge Banco Santander on earnings? See what Banco Santander's 11.6x P/E says about the price .
The issue now is whether the returns Banco Santander earns on its capital are strong and durable enough to make today's share price look well grounded on that basis.
If you want to test this same question about capital returns and AI investment across a broader field, compare Banco Santander's profile with companies in the 40 profitable AI stocks that aren't just burning cash .
Is Banco Santander a Bargain on Excess Returns?
The Excess Returns model starts by asking how efficiently Banco Santander can reinvest shareholder capital over time. In this framework, the bank is treated as a lender that can either create value above its equity cost or slowly erode it through weaker returns.
On the numbers, Santander is modelled with book value of €7.87 per share and stable EPS of €1.30 per share, against an estimated cost of equity of €0.71 per share. That leaves estimated excess return of €0.59 per share, supported by an average return on equity of 15.51% and a stable book value path of €8.40 per share. Because this approach converts those excess returns into an intrinsic value, the projections put Banco Santander's estimated intrinsic value substantially above the current share price of €10.73.
The recent investigation notice around potentially misleading statements, especially tied to Brazilian operations, helps explain why the market keeps the price below what these excess return assumptions imply. For a fuller breakdown of how the Excess Returns model values the stock, including all the intermediate assumptions, head to the detailed intrinsic value page. Find out what Banco Santander could be worth using our Excess Returns estimate .
The Banco Santander Narrative: What Would Justify Today's Price?
Narratives picks up where the Banco Santander valuation puzzle leaves off and sets out the specific paths for growth, profitability and earnings that would need to play out for the stock to be worth materially more or less than it is today on Simply Wall St's Community page. Each scenario links its number to a clear view on how Banco Santander's revenue base, margins and key risks could evolve, giving you something concrete to revisit as new information comes through.
One of the top community narratives on Banco Santander: 25% undervalued
"Bien que le bénéfice net sous-jacent ait progressé, plusieurs signaux négatifs ont déçu les investisseurs et provoqué un mouvement de vente massif..."
Discover why this Narrative puts Banco Santander at 25% undervalued .
One more Banco Santander signal to check before you decide
Before acting on any view of Banco Santander's valuation, it is worth pausing to see which directors and senior executives have recently been selling, how much they have sold and what that trading might suggest. See the recent insider selling flagged for Banco Santander .
This article is general in nature and was produced with the assistance of AI automation, based on data and analysis from Simply Wall St. 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 SAN.MC .
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