Tesla Motors investors turn bearish as stock slumps

Some investors are souring on Tesla Motors, long one of the favorite stocks on Wall Street. Shares of the Palo Alto, Calif., electric car company have dropped 22 percent from their three-month high of $282.26 on July 20 to close Friday at $222.69. In trading Monday morning, Telsa shares slipped another 1 percent to $218.50. Three…