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

Allegheny Technologies Incorpor (symbol: ATI) was one of the worst losers
of the trading day today (2015-10-20), losing -11.66%. The number of shares
that changed hands was 6,333,603, or about 4 times the average daily volume
in the stock.
The closing price was $15.0, amounting to a market cap of $1,640,000,000,
about -60.28% off the highest price in the last 12 months. The stock has
been trading at a range between $13.66 and $37.76.
ATI is in the Steel/Iron Ore industry, part of the Basic Industries sector.
Looking at its valuation, the stock is now trading at 112.78 times earnings.