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

Metaldyne Performance Group Inc (symbol: MPG) was one of the worst losers
of the trading day today (2015-12-01), losing -9.86%. The number of shares
that changed hands was 661,841, or about 5 times the average daily volume
in the stock.
The closing price was $20.3, amounting to a market cap of $1,370,000,000,
about -17.55% off the highest price in the last 12 months. The stock has
been trading at a range between $14.57 and $24.62.
MPG is in the Auto Parts:O.E.M. industry, part of the Capital Goods sector.
It first went public in 2014.
Looking at its valuation, the stock is now trading at 12.24 times earnings.