$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 (2016-08-22), losing -7.07%. The number of shares
that changed hands was 3,502,099, or about 2 times the average daily volume
in the stock.
The closing price was $2.89, amounting to a market cap of $3,920,000,000,
about -26.28% off the highest price in the last 12 months. The stock has
been trading at a range between $0.73 and $3.92.
SID is in the Steel/Iron Ore industry, part of the Capital Goods sector.
Looking at its valuation, the stock is now trading at 21.41 times earnings.