SKN | Banco Santander’s AI Progress and Capital Returns Put Its Valuation Under Scrutiny

Key Takeaways:

• Banco Santander reported €194 million in business value generated by its AI projects during the first nine months of 2026, highlighting the financial potential of its technology investments.
• The bank’s share price gained 285.8% over five years, increasing the importance of assessing whether its returns on equity can support its current market valuation.
• An Excess Returns valuation model suggests the shares may be 43% undervalued, although legal scrutiny involving potentially misleading statements, particularly in Brazil, remains a relevant risk.

Banco Santander’s recent performance places two important questions at the centre of its investment profile: whether its technology investments can translate into sustained operating value, and whether the returns generated on shareholder capital justify its market valuation. The Spanish banking group has recorded substantial share-price appreciation over five years, while its reported progress in artificial intelligence offers another dimension to its profitability outlook.

AI Investments Begin to Demonstrate Measurable Business Value

Santander reported that its artificial intelligence projects generated €194 million in business value during the first nine months of 2026. This figure provides an indication of how the bank’s technology initiatives are beginning to contribute to its business operations.

For a large international banking group, the significance of AI extends beyond technological adoption. Its longer-term value depends on whether these projects can improve operational efficiency, support profitability and strengthen the bank’s capacity to allocate capital productively. The reported contribution offers an encouraging data point, but the durability and scale of these benefits will require further evidence.

For internationally exposed wealth holders, Santander’s ability to convert technology investment into consistent financial performance is particularly relevant when evaluating the resilience of a major banking institution.

Strong Capital Returns Support the Valuation Debate

Santander’s share price has climbed 285.8% over the past five years. That performance has raised the importance of examining whether the bank’s underlying returns can sustain its current valuation rather than relying solely on historical market gains.

The Excess Returns model cited in the source estimates an intrinsic value substantially above the reported share price of €10.73, producing an assessment that the stock may be 43% undervalued. Its assumptions include book value of €7.87 per share, stable earnings per share of €1.30 and an estimated cost of equity of €0.71 per share. The model also uses an average return on equity of 15.51% and projects stable book value of €8.40 per share.

These figures suggest that the valuation case rests on Santander continuing to generate returns above its estimated cost of equity. However, the 43% discount is a model-based estimate, not a guaranteed market outcome. Its reliability depends on the assumptions holding over time.

Legal Scrutiny Remains a Relevant Institutional Risk

The valuation discussion also takes place against the background of an investigation notice concerning potentially misleading statements, particularly in connection with Santander’s Brazilian operations. This scrutiny may help explain why the market valuation does not fully reflect the optimistic assumptions embedded in the Excess Returns model.

For a cross-border banking group, legal and regulatory developments can carry implications beyond immediate financial costs. They may affect institutional reputation, management priorities and confidence in the quality of governance. The available source does not establish the outcome of the investigation, making it important to distinguish the existence of scrutiny from any finding of wrongdoing.

What Wealth Holders Should Monitor

Santander’s next phase will depend on whether AI-generated business value develops into sustained improvements in earnings and capital efficiency, while the bank manages the legal and reputational questions surrounding its operations. Its reported 11.6 times price-to-earnings ratio and strong historical share performance provide additional valuation context, but neither replaces a closer assessment of earnings quality and risk.

For investors assessing international banking exposure, the central consideration is the durability of Santander’s capital returns, not simply the discount suggested by one valuation model. Future disclosures on AI performance, profitability and the Brazilian investigation will help determine whether the bank’s underlying fundamentals support the market expectations now attached to its shares.

For a confidential discussion regarding your cross-border banking structure and global wealth management arrangements, contact our senior advisory team.