$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 (2015-09-30), losing -11.686%. The number of
shares that changed hands was 19,696,444, or about 1 times the average
daily volume in the stock.
The closing price was $0.461, amounting to a market cap of $1,630,000,000,
about -84.735% off the highest price in the last 12 months. The stock has
been trading at a range between $0.432 and $3.02.
NBG is in the Commercial Banks industry, part of the Finance sector.