Regional banks are simpler and more concentrated than money-center banks — they earn money by taking deposits and making loans, primarily in their local market. Net interest margin, the spread between lending rates and deposit costs, is the primary driver of earnings. When rates rise, NIM typically expands as loan rates reprice faster than deposit costs, which is favorable. When the economy weakens in their service area, loan losses rise faster than for geographically diversified large banks. This concentration risk cuts both ways: a bank serving a thriving regional economy can outperform its larger peers, while one exposed to an industrial decline can face severe credit quality problems. Loan-to-deposit ratios, classified loan trends and deposit franchise quality are the key metrics to assess. Consolidation has been a consistent theme, with scale advantages in technology investment creating pressure on smaller institutions. For investors, regional banks offer cyclical income with meaningful credit risk and potential acquisition premium.