VIX FUTURES - CBOE FUTURES EXCHANGE                                  Code-1170E1
OPTION AND FUTURES COMBINED POSITIONS AS OF 08/05/08          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
($1000 X INDEX)                                      OPEN INTEREST:       47,192
COMMITMENTS
   8,173   10,622    6,425   23,404   24,815   38,002   41,862    9,190    5,330

CHANGES FROM 07/29/08 (CHANGE IN OPEN INTEREST:      3,630)
     683       59      -72      745    2,251    1,356    2,238    2,274    1,392

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    17.3     22.5     13.6     49.6     52.6     80.5     88.7     19.5     11.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       25)
      10        6        6        9        6       22       15
 

Updated August 8, 2008