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

Cliffs Natural Resources Inc Co (symbol: CLF) was one of the worst losers
of the trading day today (2016-10-27), losing -18.23%. The number of shares
that changed hands was 36,033,921, or about 3 times the average daily
volume in the stock.
The closing price was $5.07, amounting to a market cap of $932,220,000,
about -40.0% off the highest price in the last 12 months. The stock has
been trading at a range between $1.2 and $8.45.
CLF is in the Precious Metals industry, part of the Basic Industries sector.
Looking at its valuation, the stock is now trading at 25.22 times earnings.