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

AAR Corp. Common Stock (symbol: AIR) was one of the worst losers of the
trading day today (2016-07-13), losing -9.23%. The number of shares that
changed hands was 1,510,259, or about 10 times the average daily volume in
the stock.
The closing price was $22.73, amounting to a market cap of $777,370,000,
about -29.91% off the highest price in the last 12 months. The stock has
been trading at a range between $18.36 and $32.43.
AIR is in the Aerospace industry, part of the Capital Goods sector.
Looking at its valuation, the stock is now trading at 16.2 times earnings.