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

Newpark Resources, Inc. Common (symbol: NR) was one of the worst losers of
the trading day today (2016-11-29), losing -12.67%. The number of shares
that changed hands was 4,635,304, or about 9 times the average daily volume
in the stock.
The closing price was $6.55, amounting to a market cap of $554,480,000,
about -18.12% off the highest price in the last 12 months. The stock has
been trading at a range between $3.35 and $8.0.
NR is in the Metal Fabrications industry, part of the Energy sector.