$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 (2015-12-28), losing -9.51%. The number of shares
that changed hands was 42,549,472, or about 1 times the average daily
volume in the stock.
The closing price was $6.85, amounting to a market cap of $7,920,000,000,
about -71.42% off the highest price in the last 12 months. The stock has
been trading at a range between $6.08 and $23.97.
FCX is in the Precious Metals industry, part of the Basic Industries sector.