Why the stock market sold off Tuesday and how investors can decide when to buy

A trader works on the floor of the New York Stock Exchange during the opening bell on April 2, 2024.
Timothy A. Clary | AFP | Getty Images

We knew Tuesday's selloff was coming. Not because we're fortune tellers but because that's what always happens after a period of strength. We didn't know exactly when it would happen. Nobody ever does. But we knew that as the strength continued to build in the market, we had to be ready.