VIX FUTURES - CBOE FUTURES EXCHANGE                                  Code-1170E1
OPTION AND FUTURES COMBINED POSITIONS AS OF 07/19/11          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
($1000 X INDEX)                                      OPEN INTEREST:      227,572
COMMITMENTS
  24,064   40,606   47,870  122,960  110,669  194,894  199,145   32,677   28,427

CHANGES FROM 07/12/11 (CHANGE IN OPEN INTEREST:     -2,582)
  -4,719   -8,949    2,520   -3,239    2,814   -5,438   -3,615    2,856    1,033

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    10.6     17.8     21.0     54.0     48.6     85.6     87.5     14.4     12.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      125)
      43       30       61       28       27      107      103
 

Updated July 22, 2011