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

Cliffs Natural Resources Inc. (symbol: CLF) was one of the biggest winners
of the trading day today (2015-10-06), gaining 19.39%. The number of shares
that changed hands was 9,673,085, or about 1.6 times the average daily
volume in the stock.
The closing price was $3.51, amounting to a market cap of $538,450,000,
about -70.0% off the highest price in the last 12 months. The stock has
been trading at a range between $2.28 and $11.7.
CLF is in the Precious Metals industry, part of the Basic Industries sector.