VIX FUTURES - CBOE FUTURES EXCHANGE                                  Code-1170E1
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/24/11          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
($1000 X INDEX)                                      OPEN INTEREST:      235,640
COMMITMENTS
  25,608   45,959   46,329  141,437  124,811  213,374  217,099   22,266   18,541

CHANGES FROM 05/17/11 (CHANGE IN OPEN INTEREST:     -8,541)
  -4,748    8,369    1,160    1,224  -16,715   -2,364   -7,185   -6,177   -1,355

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    10.9     19.5     19.7     60.0     53.0     90.6     92.1      9.4      7.9

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      124)
      43       34       56       25       25      108       96
 

Updated May 27, 2011