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

Gold Fields Limited (symbol: GFI) was one of the biggest winners of the
trading day today (2015-08-20), gaining 16.39%. The number of shares that
changed hands was 11,914,955, or about 2.7 times the average daily volume
in the stock.
The closing price was $3.55, amounting to a market cap of $2,750,000,000,
about -40.93% off the highest price in the last 12 months. The stock has
been trading at a range between $2.42 and $6.01.
GFI is in the Precious Metals industry, part of the Basic Industries sector.