$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 (2015-12-30), losing -8.8%. The number of shares
that changed hands was 9,748,815, or about 1 times the average daily volume
in the stock.
The closing price was $1.97, amounting to a market cap of $689,600,000,
about -79.33% off the highest price in the last 12 months. The stock has
been trading at a range between $1.72 and $9.53.
DNR is in the Oil & Gas Production industry, part of the Energy sector.