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

Companhia Siderurgica Nacional (symbol: SID) was one of the worst losers of
the trading day today (2015-12-01), losing -11.97%. The number of shares
that changed hands was 4,767,963, or about 3 times the average daily volume
in the stock.
The closing price was $1.25, amounting to a market cap of $1,700,000,000,
about -58.05% 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.