Viacom CEO rails against 'naysayers' as sales miss estimates, shares tumble

Viacom Inc CEO Philippe Dauman railed at critics of his leadership after a fifth straight quarter missing Wall Street's sales estimates on Tuesday, unnerving investors and sending the media company's shares down more than 15 percent to a four-year low. “I could not be more focussed on getting Viacom’s stock price back to the much higher level enjoyed under my leadership just a short time ago," he said. The future of Viacom and to a lesser extent CBS, both majority-owned by Redstone,