Charles Biderman, Portfolio Manager & Chairman for TrimTabs - #PreMarket Prep for August 11, 2015

Listen to the daily broadcast live: http://premarket.benzinga.com/pre-market-show/ Charles Biderman began his career as Alan Abelson's assistant at Barron's after earning an MBA from Harvard Business School. He founded TrimTabs in 1990. TrimTabs developed into the only independent research firm providing detailed daily coverage of U.S. stock market liquidity. The premise behind TrimTabs' approach is that stock prices are a function of supply and demand of shares of stock and money rather than fundamental value. TrimTabs launched its first exchange-traded fund in 2011. Biderman is a regular on CNBC's Santelli Exchange and Fox Business' Opening Bell with Maria Bartiromo.