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.” ...

This has been a roller coaster year for the S&P 500, Nasdaq Composite, and Dow Jones Industrial Average, with all three enduring a mini-crash and a rip-roaring rally to new highs. A new ...