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

SM Energy Company Common Stock (symbol: SM) was one of the worst losers of
the trading day today (2016-01-18), losing -15.2%. The number of shares
that changed hands was 7,505,390, or about 3 times the average daily volume
in the stock.
The closing price was $11.6, amounting to a market cap of $788,500,000,
about -80.76% off the highest price in the last 12 months. The stock has
been trading at a range between $11.27 and $60.28.
SM is in the Oil & Gas Production industry, part of the Energy sector.
Looking at its valuation, the stock is now trading at 3.5 times earnings.