The value of the S&P 500 futures contract can be calculated by multiplying the futures price by $500. For example, if the S&P's are trading at 1089.50, the value would then be $500 X 1089.50, or $544,750. The minimum price fluctuation (tick) for the S&P's are .10, so a tick up or down is worth $25 per contract. A full point has 10 ticks in it, which is worth $250 per contract (.10 X $25 = $250). The E-Mini S&P 500 is on the same price scale as the regular (full) S&P 500, the difference lies in the tick and point values. The E-Mini S&P trades in .25 ticks and is worth $12.50 per tick; and a point is worth $50
($12.50 X 4 = $50). As you can see the E-Mini's are one fifth the size of the full S&P 500 contract.