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

Denbury Resources Inc. Common S (symbol: DNR) was one of the worst losers
of the trading day today (2015-10-07), losing -9.95%. The number of shares
that changed hands was 26,266,529, or about 2 times the average daily
volume in the stock.
The closing price was $3.44, amounting to a market cap of $1,200,000,000,
about -75.0% off the highest price in the last 12 months. The stock has
been trading at a range between $2.37 and $13.76.
DNR is in the Oil & Gas Production industry, part of the Energy sector.