The current bull market for U.S. stocks is now the longest of all time. How much longer might it last? Strong corporate earnings growth and a resilient U.S. economy bolstered by a solid job market and consumer confidence set the stage for the market to continue the upward trajectory it’s been on for more than nine years, experts say. Even rising interest rates are not likely to derail the bull. Data show the S&P 500 typically notches gains during periods when rates are rising.Missing for now are signs that the U.S. economy is speeding toward a recession.