$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 (2015-08-28), losing -5.7%. The number of shares
that changed hands was 13,709,077, or about 1 times the average daily
volume in the stock.
The closing price was $0.675, amounting to a market cap of $2,380,000,000,
about -81.092% off the highest price in the last 12 months. The stock has
been trading at a range between $0.56 and $3.57.
NBG is in the Commercial Banks industry, part of the Finance sector.