$FMSA is one of biggest losers #stocks today. read more:

Fairmount Santrol Holdings Inc. (symbol: FMSA) was one of the worst losers
of the trading day today (2016-06-13), losing -10.98%. The number of shares
that changed hands was 2,639,717, or about 3 times the average daily volume
in the stock.
The closing price was $6.65, amounting to a market cap of $1,070,000,000,
about -28.34% off the highest price in the last 12 months. The stock has
been trading at a range between $1.0 and $9.28.
FMSA is in the Mining & Quarrying of Nonmetallic Minerals (No Fuels)
industry, part of the Basic Industries sector. It first went public in 2014.