$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 (2015-09-01), losing -15.9%. The number of shares
that changed hands was 15,001,742, or about 1 times the average daily
volume in the stock.
The closing price was $3.65, amounting to a market cap of $1,280,000,000,
about -78.72% off the highest price in the last 12 months. The stock has
been trading at a range between $3.04 and $17.15.
DNR is in the Oil & Gas Production industry, part of the Energy sector.