NEW YORK (TheStreet) -- Shares of National Bank of Greece fell more than 5% to a 52-week low of $1.50 in morning trading Thursday as shares sold off following a spike on Wednesday. Newly released data on Wednesday showed Eurozone deflation materialized at the end of 2014. Consumer prices in the Eurozone declined 0.2% year-over-year in December, according to the first official estimate, CNBC ...