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

Clayton Williams Energy, Inc. C (symbol: CWEI) was one of the worst losers
of the trading day today (2015-09-08), losing -8.92%. The number of shares
that changed hands was 418,520, or about 2 times the average daily volume
in the stock.
The closing price was $46.34, amounting to a market cap of $563,910,000,
about -57.02% off the highest price in the last 12 months. The stock has
been trading at a range between $33.06 and $107.82.
CWEI is in the Oil & Gas Production industry, part of the Energy sector. It
first went public in 1993.