$VNRBP is one of biggest losers #stocks today. read more:

Vanguard Natural Resources LLC (symbol: VNRBP) was one of the worst losers
of the trading day today (2015-12-07), losing -42.89%. The number of shares
that changed hands was 397,332, or about 7 times the average daily volume
in the stock.
The closing price was $6.75, amounting to a market cap of $587,360,000,
about -71.59% off the highest price in the last 12 months. The stock has
been trading at a range between $6.54 and $23.76.
VNRBP is in the Oil & Gas Production industry, part of the Energy sector.