Oppenheimer Upgrades U.S. Silica Holdings To Outperform

Analysts at Oppenheimer upgraded

from Perform to Outperform. U.S. Silica Holdings shares have dropped 33.37 percent over the past 52 weeks, while the S&P 500 index has surged 9.07 percent in the same period. U.S. Silica Holdings' shares rose 1.00 percent to $33.30 in after-hours trading.