$FCX is one of biggest losers #stocks today. read more:

Freeport-McMoRan, Inc. Common S (symbol: FCX) was one of the worst losers
of the trading day today (2016-01-11), losing -20.33%. The number of shares
that changed hands was 117,497,699, or about 3 times the average daily
volume in the stock.
The closing price was $4.31, amounting to a market cap of $4,980,000,000,
about -82.02% off the highest price in the last 12 months. The stock has
been trading at a range between $4.23 and $23.97.
FCX is in the Precious Metals industry, part of the Basic Industries sector.