WABC Historical PE Ratio Notes

— Westamerica Bancorp (WABC) is a regional bank holding company headquartered in California, operating through its subsidiary Westamerica Bank. The company focuses primarily on community banking, offering personal & business banking services such as loans, deposits, and treasury management, largely targeting individuals, small-to-medium-sized businesses, and municipalities. The company's historical price-to-earnings (PE) ratio reflects how the market has valued WABC's earnings over time, influenced by several factors intrinsic to its business model. Banking sector fundamentals such as interest rate environments, local and national economic conditions, credit risk, loan growth, and regulatory changes can impact WABC's earnings & the market's sentiment toward its share price, thus affecting the PE ratio. For example, periods of economic growth and stable loan performance often coincide with higher earnings & potentially elevated PE ratios, while times of credit stress or narrow interest margins may pressure both earnings & the multiple investors assign. When you analyze WABC's historical charts & tables of price, earnings, and PE ratios, keep in mind that fluctuations can be tied closely to both regional economic cycles and broader trends affecting the banking industry.

On this page we presented the WABC Historical PE Ratio information for Westamerica Bancorp' stock. The average WABC historical PE based on using the annualized quarterly earnings result at each measurement period (for the "E" in the PE calculation; and the closing price on earnings date as the "P") is 17.5. Meanwhile, using the trailing twelve month (TTM) quarterly earnings result as our method of calculation the "E" value at each measurement period, the average WABC historical PE based on this TTM earnings result method is 17.8.

Let's now compare this WABC historical PE result, against the recent PE: when this page was posted on 4/21/2026, the most recent closing price for WABC had been 53.46, and the most recent quarterly earnings result, annualized, was 4.52. Meanwhile, the most recent TTM earnings summed to 4.49. From these numbers, we calculate the recent WABC PE on 4/21/2026 based on annualized quarterly EPS was 11.8. Based on WABC's history, that recent PE is low relative to the historical average, with the recent PE 32.6% lower than the historical average PE across our data set for Westamerica Bancorp. Looking at the recent WABC PE on 4/21/2026 based on TTM EPS, we calculate the ratio at 11.9. Based on WABC's history, that recent PE is low relative to the historical average, with the recent PE 33.1% lower than the average PE across our Westamerica Bancorp data set with TTM EPS used in the calculation at each period.

Another interesting WABC historical PE Ratio calculation we look at is to take the median earnings per share of the last four quarters for WABC, and then annualize the resulting value... with that annualized number then being used in the PE calculation. To walk through this math for WABC, we start with the past four EPS numbers and we first sort them from lowest to highest: 1.12, 1.12, 1.12, and 1.13. We then toss out the highest and lowest result, and then take the average of those two middle numbers — 1.12 and 1.12 — which gives us the median of 1.12. Basically the way to think about this 1.12 number is this: for the trailing four earnings reports, 1.12 marks the "middle ground" number where WABC has reported a value higher than 1.12 half the time, and has reported a value lower than 1.12 half the time. Annualizing that median value then gets us to 4.48/share, which we use as the denominator in our next PE calculation. With 53.46 as the numerator (as of 4/21/2026), the calculation is then 53.46 / 4.48 = 11.9 as the WABC PE ratio as of 4/21/2026, based on that annualized median value we calculated.

For self directed investors doing their due diligence on WABC or any other given stock, valuation analysis for WABC can greatly benefit from studying the past earnings and resulting PE calculations. This exercise can help inform an analysis as to whether the past earnings trajectory and current versus historical PE ratios justify the current stock value.

That's why we bring you HistoricalPERatio.com to make it easy for investors to investigate Westamerica Bancorp PE history or the past PE information for any stock in our coverage universe. And in your continued research we hope you will be sure to check out the further links included for earnings surprises history (beat/miss data) as well as next earnings dates for WABC. Thanks for visiting, and the next time you need to research WABC Historical PE Ratio or the ratio for another stock, we hope you'll think of our site, as your go-to historical PE ratio research resource of choice.