$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 (2015-12-28), losing -11.9%. The number of shares
that changed hands was 136,204, or about 2 times the average daily volume
in the stock.
The closing price was $9.33, amounting to a market cap of $811,870,000,
about -60.73% off the highest price in the last 12 months. The stock has
been trading at a range between $4.67 and $23.76.
VNRBP is in the Oil & Gas Production industry, part of the Energy sector.