$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 (2016-09-09), losing -9.97%. The number of shares
that changed hands was 4,880,225, or about 2 times the average daily volume
in the stock.
The closing price was $16.16, amounting to a market cap of $1,760,000,000,
about -15.39% off the highest price in the last 12 months. The stock has
been trading at a range between $7.08 and $19.1.
ATI is in the Steel/Iron Ore industry, part of the Basic Industries sector.