VIX FUTURES - CBOE FUTURES EXCHANGE                                  Code-1170E1
OPTION AND FUTURES COMBINED POSITIONS AS OF 08/19/08          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
($1000 X INDEX)                                      OPEN INTEREST:       50,691
COMMITMENTS
   7,358   12,739    7,571   20,727   25,655   35,656   45,965   15,035    4,726

CHANGES FROM 08/12/08 (CHANGE IN OPEN INTEREST:      3,675)
    -747    5,157   -3,044    1,728    1,886   -2,063    3,999    5,738     -324

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    14.5     25.1     14.9     40.9     50.6     70.3     90.7     29.7      9.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       28)
      12        7        9        9        4       25       16
 

Updated August 22, 2008