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

Buenaventura Mining Company Inc (symbol: BVN) was one of the worst losers
of the trading day today (2016-02-16), losing -13.84%. The number of shares
that changed hands was 2,822,426, or about 2 times the average daily volume
in the stock.
The closing price was $4.73, amounting to a market cap of $1,220,000,000,
about -62.19% off the highest price in the last 12 months. The stock has
been trading at a range between $3.3 and $12.51.
BVN is in the Precious Metals industry, part of the Basic Industries
sector. It first went public in 1996.