$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 (2016-08-16), losing -6.03%. The number of shares
that changed hands was 2,396,293, or about 1 times the average daily volume
in the stock.
The closing price was $3.27, amounting to a market cap of $4,440,000,000,
about -16.58% 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 467.14 times earnings.