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

AngloGold Ashanti Limited (symbol: AU) was one of the biggest winners of
the trading day today (2015-08-20), gaining 10.98%. The number of shares
that changed hands was 8,355,928, or about 2.6 times the average daily
volume in the stock.
The closing price was $8.29, amounting to a market cap of $3,350,000,000,
about -51.83% off the highest price in the last 12 months. The stock has
been trading at a range between $5.64 and $17.21.
AU is in the Precious Metals industry, part of the Basic Industries sector.