Carvana posts record second-quarter results with surging profits and unit sales, but its lofty valuation raises concern.

Carvana (NYSE: CVNA) shares surged on Thursday, climbing 17% in early hour trading to a new all-time high above $390.

eBay and Carvana delivered solid beats and bullish outlooks, while Ford warned that tariffs could shave $2 billion off annual ...