$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 (2015-10-26), losing -11.86%. The number of shares
that changed hands was 14,403,356, or about 2 times the average daily
volume in the stock.
The closing price was $0.78, amounting to a market cap of $2,760,000,000,
about -71.84% off the highest price in the last 12 months. The stock has
been trading at a range between $0.43 and $2.77.
NBG is in the Commercial Banks industry, part of the Finance sector.