BSAC vs ITUB: Which Is the Better Buy in 2026?

Same yardstick, side by side (as of September 2026). Valuation lined up like this is most meaningful for two names in the same corner of the market, which these are. Figures are approximate; verify before investing.

Reading it: ITUB is the cheaper of the two on forward earnings, but cheaper is not the same as better. Pair the valuation with growth (how far the forward P/E sits below the trailing P/E) and risk (beta) before you decide.

The metrics above tell you which is the marginally better business. The bigger risk for most people is not picking the slightly worse stock, it is over-concentrating. BSAC and ITUB share themes, so owning both, or adding either to what you already hold, can quietly push a large share of your portfolio into one bet.

This is the part a generic comparison page cannot answer, because it depends on what you own. Connect your brokerage and Walnut shows your real, combined BSAC and ITUB exposure, flags overlap with your existing positions, and tells you if adding one would tip you past a concentration you are comfortable with, read-only by default, with your login staying at your broker. Walnut is not an investment adviser.

Banco Santander-Chile is Chile's largest bank by loans and second largest by deposits, serving roughly 4.6 million customers (about 2.3 million of them digital) across retail banking, commercial and corporate and investment banking, wealth management and insurance, and consumer banking. Retail banking drives about two-thirds of loans and net interest margin. The bank is majority-controlled by Spain's Banco Santander SA and trades in the US as an ADR (each ADR represents a set number of underlying Santander-Chile shares). It also runs the fast-growing Getnet payments business, which has taken meaningful merchant-acquiring share in Chile and into which Santander is bringing PagoNxt as a strategic partner while keeping control.

Full BSAC guide

Itau Unibanco Holding S.A. (NYSE: ITUB) is the largest private-sector bank in Brazil and one of the largest financial institutions in Latin America, offering retail and commercial banking, credit cards, insurance, asset management, and investment banking across Brazil and other markets. The U.S.-listed security is an American Depositary Receipt tied to the Brazil-listed preferred shares (ITUB4), so its dollar value moves with both the underlying share price and the Brazilian real. Itau, together with Bradesco and Santander Brasil, forms the private-bank core of a sector where these three plus the state-owned banks control the bulk of system assets.

Full ITUB guide

Both fit overlapping themes, but they are not interchangeable. The useful comparison is which set of drivers and risks you want exposure to.

• BSAC drivers: High and durable profitability; Net interest margin and lower funding costs.
• ITUB drivers: High and durable profitability; Interest-rate and credit cycle.

A faster-growing, richer-valued name usually swings harder, so it suits a longer horizon and a higher tolerance for volatility; a steadier, more cash-generative business suits a more conservative or income-minded investor. The honest test is which set of risks you could hold through a drawdown: The biggest risks are macro and currency: results depend heavily on Chilean inflation, interest rates, and GDP growth, and US ADR holders are exposed to Chilean-peso weakness against the dollar, which can erode dividend and share value in dollar terms. For ITUB, the largest risks are macro and currency: ITUB is an ADR whose dollar value depends on the Brazilian real, so a weakening real can wipe out local-currency gains for U.S.

Growth-minded investors who believe the theme has years to run tend to accept the richer multiple for more upside; value-minded investors lean toward the cheaper forward earnings and steadier profile. Pick BSAC if you believe its drivers more; ITUB if you believe its. Many investors hold both, but since they share themes, that is a concentrated bet, not diversification. Decide deliberately and check overlap. For the full detail, see the BSAC and ITUB guides.

BSAC. At roughly $15.6B market cap and a mid-teens P/E, BSAC is valued as a mature, high-ROE emerging-market bank rather than a growth story. The dividend yield near 3.3 percent reflects a high payout ratio (about 60 percent of prior-year profit), and reported figures fluctuate with the Chilean-peso-to-dollar rate since earnings are earned in pesos.

ITUB. Itau trades at a low-double-digit price-to-earnings multiple, a discount to large U.S. banks, reflecting Brazilian country and currency risk despite a much higher return on equity. The dividend yield is meaningfully above that of most developed-market megabanks. Reported figures are in Brazilian reais, so the dollar ADR value also depends on the BRL/USD exchange rate.

Headline figures (approximate, July 2026): BSAC shows market capitalization ~$15.6B, 2025 net income ~Ch$1.05 trillion (~$2.48 per ADR), return on equity (2025 / 2026) ~23%, p/e (ttm) ~14-15x; ITUB shows q1 2026 recurring managerial result ~R$12.3B (~$2.5B), q1 2026 net income ~R$11.9B (up ~11% YoY), q1 2026 net interest income ~R$29.7B, recurring roe ~24.8%.

BSAC and ITUB are related but distinct: same themes, different businesses and risks. Neither wins in the abstract; the right pick is whichever thesis you actually believe, sized so you are not over-concentrated in one theme. Walnut can show your combined BSAC and ITUB exposure against your real portfolio. It is not an investment adviser.