$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 (2015-11-18), gaining 16.0%. The number of shares that
changed hands was 3,562,277, or about 2.3 times the average daily volume in
the stock.
The closing price was $1.45, amounting to a market cap of $1,970,000,000,
about -51.34% 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.