VIX FUTURES - CBOE FUTURES EXCHANGE                                  Code-1170E1
OPTION AND FUTURES COMBINED POSITIONS AS OF 08/20/13          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
($1000 X INDEX)                                      OPEN INTEREST:      444,632
COMMITMENTS
 105,400  221,717   81,894  232,444  114,177  419,738  417,788   24,894   26,844

CHANGES FROM 08/13/13 (CHANGE IN OPEN INTEREST:      3,046)
    -959    2,214    3,855    2,744   -2,139    5,640    3,930   -2,594     -884

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    23.7     49.9     18.4     52.3     25.7     94.4     94.0      5.6      6.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      182)
      52       79       76       37       39      134      156



Updated August 23, 2013