In its most recent quarterly results, the company's net sales of $4.2 billion for the first three months of the year were down 1% on an operational basis (excluding the impact of foreign exchange). Concerns about the economy in the wake of inflation and rising interest rates are a key reason bank stocks haven't been flying high of late. The company has strong fundamentals, and its cheap valuation makes it little wonder why Warren Buffett's Berkshire Hathaway decided to add the bank stock to its portfolio.