By Dan Weil Bank stocks have stumbled in 2022, with the KBW Nasdaq Bank Index dropping 30% year to date, outdoing the S&P 500’s slide. Bank stocks have struggled in 2022 amid soaring interest rates, with the KBW Nasdaq Bank Index dropping 30% year to date, exceeding the S&P 500’s 25% slide. Rising interest rates help banks to some extent, as their rates of return on loans and bonds rise faster than the interest rates they pay for deposits. But higher rates hurt banks by depressing the economy, denting demand for loans and bank services. With banks starting to report third-quarter earnings this…