$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 (2016-03-07), gaining 18.69%. The number of shares
that changed hands was 24,982,937, or about 6.2 times the average daily
volume in the stock.
The closing price was $3.43, amounting to a market cap of $525,740,000,
about -50.07% off the highest price in the last 12 months. The stock has
been trading at a range between $1.2 and $6.87.
CLF is in the Precious Metals industry, part of the Basic Industries sector.