Two renowned contemporary art enthusiasts share their collection with a South Florida museumโ€”and gear up for Art Basel Miami Beach. Thereโ€™s a large portrait by artist Mickalene Thomas, titled โ€œPortrait of Mama Bush I,โ€ that greets visitors when they walk into the โ€œBelief + Doubtโ€ exhibit...

I sold 90% of my original position in the disruptive video giant way too soon. When you find a growth stock early in its cycle of redefining the market, you hold on. It's been a year and a half since I shared with you my bittersweet tale about...