About CME Nikkei 225 Dollar - Based Options

Contract Size
The size of one dollar-denominated CME Nikkei 225™ options contract is one dollar-denominated CME Nikkei 225 futures contract. The contract moves in ticks of 5.00 index points, or $25 per contract.

CME Nikkei 225™ options use American-style option expiration and are listed four months in the March quarterly cycle, with additional months listed on demand. The contracts trade in ticks of 5.00 index points or $25 per contract, with minimum strike price intervals of 0.05 index points.

Underlying Index
The Nikkei 225 Stock Average™ Index is one of the oldest Japanese market barometers, first calculated in 1949. It is structured to reflect the Japanese stock market using the 225 top-rated, blue-chip Japanese companies listed in the First Section of the Tokyo Stock Exchange (TSE), featuring such familiar company names as Sony, Honda, and more. The Nikkei 225 Index is price-weighted, so that higher-priced stocks have a greater percentage impact on the Index than lower-priced stocks.

For more details on the Nikkei Stock Average and its construction, visit the Nikkei Web site.