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

McEwen Mining Inc. Common Stock (symbol: MUX) was one of the worst losers
of the trading day today (2016-05-27), losing -7.53%. The number of shares
that changed hands was 2,199,418, or about 1 times the average daily volume
in the stock.
The closing price was $2.21, amounting to a market cap of $658,750,000,
about -20.5% off the highest price in the last 12 months. The stock has
been trading at a range between $0.65 and $2.78.
MUX is in the Precious Metals industry, part of the Basic Industries sector.