$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 (2016-04-08), gaining 12.14%. The number of shares that
changed hands was 3,653,475, or about 1.9 times the average daily volume in
the stock.
The closing price was $2.31, amounting to a market cap of $3,130,000,000,
about -22.48% 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.