VIX FUTURES - CBOE FUTURES EXCHANGE                                  Code-1170E1
OPTION AND FUTURES COMBINED POSITIONS AS OF 08/21/12          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
($1000 X INDEX)                                      OPEN INTEREST:      403,608
COMMITMENTS
  82,924  140,962   68,035  220,049  163,499  371,008  372,496   32,600   31,112

CHANGES FROM 08/14/12 (CHANGE IN OPEN INTEREST:     38,779)
   7,056    2,012   14,075   18,504   17,487   39,635   33,574     -856    5,205

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    20.5     34.9     16.9     54.5     40.5     91.9     92.3      8.1      7.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      158)
      46       66       66       33       39      122      134
 

Updated August 24, 2012