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

U.S. Silica Holdings, Inc. (symbol: SLCA) was one of the biggest winners of
the trading day today (2015-10-28), gaining 22.34%. The number of shares
that changed hands was 8,231,531, or about 3.8 times the average daily
volume in the stock.
The closing price was $17.91, amounting to a market cap of $956,180,000,
about -64.85% off the highest price in the last 12 months. The stock has
been trading at a range between $13.48 and $50.95.
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 9.82 times earnings.