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

First Majestic Silver Corp. Ord (symbol: AG) was one of the worst losers of
the trading day today (2016-12-30), losing -6.95%. The number of shares
that changed hands was 8,040,232, or about 1 times the average daily volume
in the stock.
The closing price was $7.63, amounting to a market cap of $1,250,000,000,
about -60.16% off the highest price in the last 12 months. The stock has
been trading at a range between $2.4 and $19.15.
AG is in the Precious Metals industry, part of the Basic Industries sector.