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

Allegheny Technologies Incorporated (symbol: ATI) was one of the biggest
winners of the trading day today (2016-02-04), gaining 15.21%. The number
of shares that changed hands was 5,261,660, or about 1.9 times the average
daily volume in the stock.
The closing price was $10.38, amounting to a market cap of $1,130,000,000,
about -72.51% off the highest price in the last 12 months. The stock has
been trading at a range between $7.08 and $37.76.
ATI is in the Steel/Iron Ore industry, part of the Basic Industries sector.