$SLCA is one of biggest winner #stocks today. read more:

U.S. Silica Holdings, Inc. Comm (symbol: SLCA) was one of the biggest
winners of the trading day today (2015-07-29), gaining 15.82%. The number
of shares that changed hands was 8,124,598, or about 4.4 times the average
daily volume in the stock.
The closing price was $25.11, amounting to a market cap of $1,340,000,000,
about -65.8% off the highest price in the last 12 months. The stock has
been trading at a range between $19.35 and $73.43.
SLCA is in the Mining & Quarrying of Nonmetallic Minerals (No Fuels)
industry, part of the Basic Industries sector. It first went public in 2012.
Looking at its valuation, the stock is now trading at 11.62 times earnings.