These AI investing apps can supplement your stock research, back-test strategies, analyze your portfolio and more.

Upstart stock has plummeted so far in 2026, but investors might be too pessimistic.

There’s an iconic scene at the end of the 1985 film “Back to the Future” when Doc Brown returns from 2015 to warn Marty McFly and his future wife, Jennifer, that their future children have “problems.” ...