4 U.S. Stocks Underperforming The S&P 500 by 30%+ By: Benzinga via Benzinga August 21, 2015 at 11:15 AM EDT The S&P 500 is a benchmark commonly used to measure a fund manager's success or failure. And despite the fact that the S&P 500 has seen ... Read More >> Related Stocks: Hewlett-Packard Keurig Green Mountain Ralph Lauren Corp SanDisk Corp