Tesla Inc. shares fell in early trading after Twitter users directed Chief Executive Elon Musk to sell a 10th of his stock in an online poll.
The electric-vehicle maker’s stock lost 6% in brisk trading after the opening bell Monday. Earlier, Tesla shares had changed hands more than 700,000 times, according to FactSet, more than any other stock on the S&P 500. “I was prepared to accept either outcome,” Mr. Musk said in a tweet Sunday after participants in the poll backed a sale by 58% to 42%. Neither Mr. Musk nor Tesla has said when a share sale would take place.