CBOE NASDAQ-100 VOLATILITY INDEX AND CBOE RUSSELL 2000 VOLATILITY INDEX

New Options Join Successful VIX Options, Expanding CBOE's Suite Of Volatility Products CHICAGO, September 26, 2007 - The Chicago Board Options Exchange (CBOE) will begin trading options on the CBOE Nasdaq-100 Volatility Index (ticker symbol VXN) and the CBOE Russell 2000 Volatility Index (ticker symbol RVX) tomorrow, Thursday, September 27, 2007, under licensing agreements with The Nasdaq Stock Market, Inc. and The Russell Investment Group. These two new contracts expand the suite of volatility products offered exclusively at CBOE and the CBOE Futures Exchange (CFE). CBOE will now offer options on three of CBOE's volatility benchmarks, as VXN and RVX options will join the popular CBOE Volatility Index (VIX) options. Since their launch in February 2006, VIX options have already traded over twenty million contracts, making VIX options the most successful new product launch in CBOE history.