US stocks bounce back from a weak open; banks and healthcare gain

What happened

The S&P 500 Index rose and erased its early-session losses as big banks and healthcare companies climbed, Bloomberg reported. The tech-heavy Nasdaq 100 rebounded to a slight gain after South Korean neocloud company Elice Inc. tanked in its trading debut, which Bloomberg said spurred concern about the sustainability of the global AI boom. SpaceX results are still to come.

Why it matters

If you invest through an index fund that tracks the S&P 500, days like this are normal: the market can start badly and turn around within hours. When a new company falls hard on its first day, investors often doubt the whole theme it represents, here AI, and that mood can spread to the big tech names that weigh heavily in the index. Over several years, a single session says little about your money.