$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 (2016-04-22), losing -7.48%. The number of shares
that changed hands was 7,982,532, or about 2 times the average daily volume
in the stock.
The closing price was $8.9, amounting to a market cap of $1,380,000,000,
about -13.84% off the highest price in the last 12 months. The stock has
been trading at a range between $2.4 and $10.33.
AG is in the Precious Metals industry, part of the Basic Industries sector.