National Bank of Greece S.A. (OTCMKTS:NBGIF – Get Rating) shares were down 0.8% on Friday . The stock traded as low as $6.12 and last traded at $6.35. Approximately 1,574 shares traded hands during trading, a decline of 88% from the average daily volume of 12,693 shares. The stock had previously closed at $6.40. National […]