$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 (2016-03-03), gaining 19.86%. The number of shares that
changed hands was 6,620,078, or about 5.3 times the average daily volume in
the stock.
The closing price was $1.69, amounting to a market cap of $2,290,000,000,
about -43.29% 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.