The one-month implied volatility rose to around 14 percent , its highest since late 2011, with investors buying options that were skewed towards more euro weakness.
Greek Prime Minister Alexis Tsipras shocked European officials by calling for a referendum to be held on July 5 to ask voters to decide whether to accept the bailout terms that his government opposes. Athens also closed banks and imposed capital controls to prevent a collapse of its banks as anxious investors pulled out their cash.
More about:
-1735029322.jpg&h=120&w=187&zc=1&q=70')
