April 27, 2026, 7:00 AM EDT. Westamerica Bancorporation (WABC) shares have gained 54.3% over three years, yet analysis suggests the stock may still be undervalued by 52.6%. Using an Excess Returns model, which measures profit above investors' required returns, the intrinsic value is estimated at $116.14 versus a current price near $55.02. The bank's strong profitability, reflected in a 15.85% average return on equity, contrasts with a modest 17.5% year-to-date share gain. While recent regional bank sector focus highlights balance sheet strength and funding costs, WABC's six-point valuation scores a middling 3 out of 6, indicating room for reassessment. Investors are advised to factor in these metrics along with discounted cash flow and peer comparisons for a fuller picture of value.