$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 (2016-04-05), gaining 8.76%. The number of shares that
changed hands was 6,770,809, or about 3.8 times the average daily volume in
the stock.
The closing price was $2.11, amounting to a market cap of $2,860,000,000,
about -29.19% 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.