About CME E-mini S&P 500 Futures

Contract Size
The size of one CME E-mini^® S&P 500^® futures contract equals $50 (the contract’s multiplier) times the current CME E-mini S&P 500 futures level. The contract moves in ticks of 0.25 index points valued at $12.50 (exception: futures calendar spreads move in increments of 0.05 index points = $2.50 contract).

These futures expire on a quarterly basis and are listed two months out in the March quarterly cycle. These contracts trade electronically only on the CME Globex^® platform nearly 24 hours a day around the clock, around the world.

Underlying Index
The S&P 500 Index is a perhaps the most widely followed benchmark of stock market performance in the world. It is capitalization-weighted and float-adjusted index of 500 large-capitalization stocks traded on the NYSE, ASE and the Nasdaq National Market System. The Index represents the market value of all outstanding common shares of the 500 firms listed (share price x shares outstanding). A change in the price of any one stock influences the Index in proportion to the relative market value of that firm's outstanding shares.

For more about the underlying Index, including a complete list of stocks represented by the Index, visit Standard & Poor’s Web site.