Tesla Inc. shares jumped in premarket trading after the electric-vehicle maker posted its highest quarterly profit to date.
The stock rose 7.1% before the opening bell Thursday, trading at $1,046.81 a share. Trading was brisk with shares changing hands more than 166,000 times, according to FactSet . That was almost twice as many times as American Airlines Group , the next most traded stock on the S&P 500.
