tokens: The most common program - trading vehicles are futures contracts on Standard & poor 's 500 - stock index -LRB- traded on the Chicago Mercantile Exchange -RRB- ; the Major Market Index , a 20 - stock index that mimics the Dow Jones Industrial Average -LRB- traded on the chicago Board of Trade -RRB- ; and the S&P 100 options -LRB- traded on the Chicago Board Options Exchange , and based on 100 stocks selected from the S&P 500 -RRB- .