$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 (2016-05-30), losing -7.53%. The number of shares
that changed hands was 9,731,929, or about 1 times the average daily volume
in the stock.
The closing price was $3.07, amounting to a market cap of $558,500,000,
about -47.34% off the highest price in the last 12 months. The stock has
been trading at a range between $1.2 and $5.83.
CLF is in the Precious Metals industry, part of the Basic Industries sector.
Looking at its valuation, the stock is now trading at 6.12 times earnings.