VIX FUTURES - CBOE FUTURES EXCHANGE
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/31/05          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
($100 X VBI)                                         OPEN INTEREST:       10,969
COMMITMENTS
   6,659    1,554      218    1,915    8,858    8,792   10,630    2,177      339

CHANGES FROM 05/24/05 (CHANGE IN OPEN INTEREST:       -124)
     443      462      -25      -15       37      403      474     -527     -598

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    60.7     14.2      2.0     17.5     80.8     80.2     96.9     19.8      3.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       36)
      23        2        4        7        5       34        9
 

Updated June 3, 2005