$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 (2016-03-29), losing -5.5%. The number of shares that
changed hands was 2,036,679, or about 1 times the average daily volume in
the stock.
The closing price was $2.06, amounting to a market cap of $2,800,000,000,
about -30.87% 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.