Yichiro Chino/Getty Images A recession will hit in 2024, according to Paul Dietrich, chief investment strategist of B. Riley. Even a mild recession could spark as much as a 40% stock crash, Dietrich told Business Insider. That's because the market is looking the most overvalued since the dot-com craze of 2001, he said. A recession will likely strike in 2024, and even a mild economic slowdown could send stocks plunging, as investors are playing in one of the most overvalued markets in over twenty years.That's according to Paul Dietrich, the chief investment strategist of B.