The Athens Stock Exchange Index slipped 4.4 percent on Friday and shares in Greek banks fell as much as 8.8 percent. Returns on Greek bonds crept upward to 25.439 percent.
Europe’s main stock markets were also down on Friday. Germany’s Dax 30 index lost 1.38 percent to 11,176.72 points. London’s benchmark FTSE 100 index lost 0.67 percent and was at 6,800.81 points in afternoon trading. In Paris, the CAC 40 sank 2.05 percent to 4,869.68 points.
Anxiety over a potential Greek debt default also darkened the mood among traders on Wall Street. Five minutes into trade, the Dow Jones Industrial Average fell 0.33 percent to 17,980.09 points, the S&P 500 fell 0.35 percent to 2,101.45 points and the Nasdaq Composite Index lost 0.34 percent to 5,065.34 points.