$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 (2016-03-08), losing -39.34%. The number of shares
that changed hands was 28,571,052, or about 2 times the average daily
volume in the stock.
The closing price was $2.22, amounting to a market cap of $767,840,000,
about -76.71% off the highest price in the last 12 months. The stock has
been trading at a range between $0.86 and $9.53.
DNR is in the Oil & Gas Production industry, part of the Energy sector.