VIX FUTURES - CBOE FUTURES EXCHANGE                                  Code-1170E1
OPTION AND FUTURES COMBINED POSITIONS AS OF 08/17/10          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
($1000 X INDEX)                                      OPEN INTEREST:      105,469
COMMITMENTS
     811   17,908    3,788   86,708   65,373   91,307   87,069   14,162   18,400

CHANGES FROM 08/10/10 (CHANGE IN OPEN INTEREST:      5,099)
     171    2,033      312    4,736      766    5,219    3,111     -120    1,988

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     0.8     17.0      3.6     82.2     62.0     86.6     82.6     13.4     17.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       52)
       4       20       13       24       25       40       46
 

Updated August 20, 2010