Need to Know: Here are the times when buy-the-dip works — and Wednesday fits the criteria

The thirst to buy stocks tied to the artificial intelligence revolution has driven half the gains in the stock market this year, a trend that looks set to continue Wednesday with OpenAI investor Microsoft flying higher in the premarket.

There’s another trend that might repeat itself. Analysts at Bespoke Investment Group studied buy-the-dip behavior and found an incredible pattern. Since 1993, when the SPY exchange-traded fund SPY tracking the S&P 500 SPX was created, owning that security the day after down days produces a…