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

Mistras Group Inc Common Stock (symbol: MG) was one of the worst losers of
the trading day today (2016-04-07), losing -8.67%. The number of shares
that changed hands was 517,854, or about 3 times the average daily volume
in the stock.
The closing price was $23.29, amounting to a market cap of $672,850,000,
about -12.02% off the highest price in the last 12 months. The stock has
been trading at a range between $12.65 and $26.47.
MG is in the Military/Government/Technical industry, part of the Consumer
Services sector. It first went public in 2009.
Looking at its valuation, the stock is now trading at 31.05 times earnings.