Ritchie left the Chicago Board Options Exchange (CBOE) in 1976, and returned to trading futures at the Chicago Board of Trade (CBOT).
Following that, in 1998 Waller moved to Chicago and became a CBOE (Chicago Board Options Exchange) Options Market Maker and a partner in a trading firm LLC.
William J. Brodsky is the current Executive Chairman, and former Chairman & CEO, of the Chicago Board Options Exchange and Chairman of the World Federation of Exchanges.
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They found a modest correlation of 0.62 between the 10-year equity premium and a measure of implied volatility (in this case VIX, the Chicago Board Options Exchange Volatility Index).
Fear Index - common name for the Chicago Board Options Exchange Market Volatility Index, ticker symbol VIX, measuring the implied volatility of S&P 500 index options