Tesla (TSLA) took a brutal hit this past week, plunging 15% in a single day, one of its worst performances since going public ...

Here's a glimpse at what's behind the market's wild moves and what experts are advising ... With decades to go until retirement, they can afford to ride the waves and let their stock portfolios ...

Volatile markets fell, then really plunged, and rebounded some in wild trading to close off their lows for the day — but still in the red. Tariffs appeared to balloon then subside in another ...