$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 (2016-07-13), losing -8.72%. The number of shares
that changed hands was 9,285,828, or about 1 times the average daily volume
in the stock.
The closing price was $3.35, amounting to a market cap of $1,160,000,000,
about -37.73% off the highest price in the last 12 months. The stock has
been trading at a range between $0.86 and $5.38.
DNR is in the Oil & Gas Production industry, part of the Energy sector.