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

Joy Global Inc. Common Stock (symbol: JOY) was one of the worst losers of
the trading day today (2015-09-03), losing -14.6%. The number of shares
that changed hands was 25,500,982, or about 10 times the average daily
volume in the stock.
The closing price was $18.9, amounting to a market cap of $1,840,000,000,
about -69.88% off the highest price in the last 12 months. The stock has
been trading at a range between $17.7 and $62.74.
JOY is in the Industrial Machinery/Components industry, part of the Energy
sector.
Looking at its valuation, the stock is now trading at 6.89 times earnings.