$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 (2016-06-30), losing -5.53%. The number of shares
that changed hands was 14,618,012, or about 1 times the average daily
volume in the stock.
The closing price was $3.59, amounting to a market cap of $1,250,000,000,
about -41.05% off the highest price in the last 12 months. The stock has
been trading at a range between $0.86 and $6.09.
DNR is in the Oil & Gas Production industry, part of the Energy sector.