 Corporate America became a heavy net buyer of stock in late 1994, and inflows into stock mutual funds from individuals began to accelerate in 1995.By that time, Biderman realized that TrimTabs’ specialty of short selling was not working well because of the sheer volume of cash flooding into the U.S. stock market from corporate America and individual investors.In August 1995, he began to analyze U.S. stock market liquidity in what would later become "TrimTabs Weekly Liquidity Review".