Remember the VIX? Probably not. Wall Street's measure of volatility has been pretty forgettable in 2012.
Not on Friday. The CBOE Volatility Index (VIX) spiked by as much as 10%. The index itself was particularly volatile Friday, closing up just 1%.
Congress and its inability to come together over the fiscal cliff wasn't the sole trigger of the heightened volatility. Friday was also quadruple witching day -- one of four trading days MORE