Compare Banco Santander, S.A. (SAN) vs Banco Bilbao Vizcaya Argentaria, S.A. (BBVA) Stock

Banco Bilbao Vizcaya Argentaria, S.A. (BBVA) offers the better valuation at 11.7x trailing P/E (9.8x forward), making it the more compelling value choice. Analysts rate Banco Santander, S.A. (SAN) a "Buy" — based on 23 analyst ratings — the highest consensus in this comparison. The "better buy" depends entirely on your goals: growth investors should weight revenue trajectory, value investors should weight P/E and PEG, and income investors should weight dividend yield and streak.

On trailing P/E, Banco Bilbao Vizcaya Argentaria, S.A. (BBVA) is the cheapest at 11.7x versus Banco Santander, S.A. at 13.6x. On forward P/E, Banco Santander, S.A. is actually cheaper at 8.7x — notably different from the trailing picture, reflecting expected earnings growth. The PEG ratio (P/E divided by earnings growth rate) is the most growth-adjusted single valuation metric: Banco Bilbao Vizcaya Argentaria, S.A. wins at 0.34x versus Banco Santander, S.A.'s 0.51x — a PEG below 1.0 traditionally signals the market is underpricing earnings growth.

Over the past 5 years, Banco Bilbao Vizcaya Argentaria, S.A. (BBVA) delivered a total return of +362.7%, compared to +272.1% for Banco Santander, S.A. (SAN). A $10,000 investment in BBVA five years ago would be worth approximately $46K today (assuming dividends reinvested). Over 10 years, the gap is even starker: BBVA returned +328.2% versus SAN's +272.8%. Past returns do not guarantee future results, and the stock with the higher historical return may already have its best growth priced in.

By beta (market sensitivity over 5 years), Banco Bilbao Vizcaya Argentaria, S.A. (BBVA) is the lower-risk stock at 0.82β versus Banco Santander, S.A.'s 1.05β — meaning SAN is approximately 29% more volatile than BBVA relative to the S&P 500. On balance sheet safety, Banco Bilbao Vizcaya Argentaria, S.A. (BBVA) carries a lower debt/equity ratio of 2% versus 5% for Banco Santander, S.A. — giving it more financial flexibility in a downturn.

Banco Bilbao Vizcaya Argentaria, S.A. (BBVA) is the more profitable company, earning 31.8% net margin versus 9.7% for Banco Santander, S.A. — meaning it keeps 31.8% of every revenue dollar as bottom-line profit. Operating margin tells a similar story: BBVA leads at 56.6% versus 14.6% for SAN. At the gross margin level — before operating expenses — BBVA leads at 100.0%, reflecting greater pricing power or product mix advantage. Stronger margins indicate durable pricing power, lower cost of revenue, or higher mix of software/services. They are one of the clearest signs of business quality.

The PEG ratio (forward P/E divided by expected earnings growth rate) is the most precise measure of undervaluation relative to growth potential. By this metric, Banco Bilbao Vizcaya Argentaria, S.A. (BBVA) is the more undervalued stock at a PEG of 0.34x versus Banco Santander, S.A.'s 0.51x. A PEG below 1.0 is traditionally considered the threshold for growth-adjusted undervaluation. On forward earnings alone, Banco Santander, S.A. (SAN) trades at 8.7x forward P/E versus 9.8x for Banco Bilbao Vizcaya Argentaria, S.A. — 1.0x cheaper on a one-year earnings basis.

All stocks in this comparison pay dividends. Banco Bilbao Vizcaya Argentaria, S.A. (BBVA) offers the highest yield at 3.5%, versus 1.8% for Banco Santander, S.A. (SAN).

For long-horizon retirement investors, Banco Bilbao Vizcaya Argentaria, S.A. (BBVA) is the stronger choice — it scores higher on the combination of lower volatility, dividend reliability, and long-term compounding (low volatility (β 0.82), 3.5% yield, +328.2% 10Y return). Both have compounded well over 10 years (BBVA: +328.2%, SAN: +272.8%), confirming both are viable long-term holds — but the lower-volatility option typically results in less emotional selling during corrections. Retirement portfolios generally favour predictability over maximum returns. Consult a financial advisor before making allocation decisions.

Both stocks operate in the Financial Services sector, making this a peer-level intra-sector comparison — the same macro tailwinds and headwinds will affect both. These fundamental differences mean investors should not choose between them on a single metric — the "better stock" depends entirely on which of these characteristics aligns with your investment strategy.