Business Recorder | Options Volatility Rises as Oil Slips on Greek Debt Talks Businessweek Crude oil options volatility rose as futures retreated on talks by European finance ministers over aid to Greece. Implied volatility for at-the-money options expiring in January, a measure of expected price swings in futures and a gauge of options ... Oil Fluctuates After Weekly Gain on China, U.S. Demand Outlook Brent oil snaps 2-day gain as Europeans seek Greek deal Crude dips on Greek financial woes, US fiscal concerns |