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

Natl Bk Greece American Deposit (symbol: NBG) was one of the worst losers
of the trading day today (2015-11-27), losing -13.5875%. The number of
shares that changed hands was 15,560,941, or about 1 times the average
daily volume in the stock.
The closing price was $0.1609, amounting to a market cap of $568,430,000,
about -93.5382% off the highest price in the last 12 months. The stock has
been trading at a range between $0.1551 and $2.49.
NBG is in the Commercial Banks industry, part of the Finance sector.