$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 (2016-10-25), losing -15.06%. The number of shares
that changed hands was 8,849,695, or about 4 times the average daily volume
in the stock.
The closing price was $15.12, amounting to a market cap of $1,650,000,000,
about -19.01% off the highest price in the last 12 months. The stock has
been trading at a range between $7.08 and $18.67.
ATI is in the Steel/Iron Ore industry, part of the Basic Industries sector.