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

National Steel Company (symbol: SID) was one of the biggest winners of the
trading day today (2016-02-01), gaining 41.56%. The number of shares that
changed hands was 3,949,534, or about 2.6 times the average daily volume in
the stock.
The closing price was $1.09, amounting to a market cap of $1,480,000,000,
about -63.42% off the highest price in the last 12 months. The stock has
been trading at a range between $0.73 and $2.98.
SID is in the Steel/Iron Ore industry, part of the Capital Goods sector.