European Stocks Slide Most Since January Amid Greek Debt Concern

European stocks slid, posting the biggest retreat since they began rallying in January, as concern over Greek debt was exacerbated by declines in the U.S. and Asia.

The Stoxx Europe 600 Index lost 1.8 percent to 403.69 at the close of trading, completing the worst week of the year. The Greek ASE Index slid 3 percent, with the National Bank of Greece SA and Alpha Bank AE tumbling more than 7 percent, as the country struggles to win more aid to avoid a default. Germany’s DAX Index plunged 5.5 percent this week, the most since 2011.