Jefferies Bears in Retreat After Firm Boosts Disclosure

Jefferies Bears in Retreat After Firm Boosts Disclosure

Tim Boyle/Bloomberg

The VIX, as the Chicago Board Options Exchange Volatility Index is known, jumped 23 percent last week to 30.16 as Greece’s reluctance to accept another bailout and a disagreement over boosting the International Monetary Fund’s resources threatened Europe’s efforts to halt its debt crisis.