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

CONSOL Energy Inc. Common Stock (symbol: CNX) was one of the worst losers
of the trading day today (2015-10-27), losing -21.22%. The number of shares
that changed hands was 24,697,768, or about 3 times the average daily
volume in the stock.
The closing price was $6.98, amounting to a market cap of $1,600,000,000,
about -83.48% off the highest price in the last 12 months. The stock has
been trading at a range between $6.9 and $42.26.
CNX is in the Coal Mining industry, part of the Energy sector. It first
went public in 1999.