VIX FUTURES - CBOE FUTURES EXCHANGE                                  Code-1170E1
OPTION AND FUTURES COMBINED POSITIONS AS OF 06/28/11          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
($1000 X INDEX)                                      OPEN INTEREST:      212,227
COMMITMENTS
  20,344   43,244   50,015  118,764   98,898  189,123  192,157   23,104   20,071

CHANGES FROM 06/21/11 (CHANGE IN OPEN INTEREST:     -3,344)
    -132      170    2,862   -3,950   -3,587   -1,220     -555   -2,124   -2,789

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     9.6     20.4     23.6     56.0     46.6     89.1     90.5     10.9      9.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      124)
      32       38       60       28       28      106      103
 

Updated July 1, 2011