VIX FUTURES - CBOE FUTURES EXCHANGE
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/10/05          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
($100 X VBI)                                         OPEN INTEREST:       12,652
COMMITMENTS
   7,761      895      540      561    9,603    8,862   11,038    3,790    1,614

CHANGES FROM 05/03/05 (CHANGE IN OPEN INTEREST:        390)
     194     -184      -60        0      568      134      324      256       66

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    61.3      7.1      4.3      4.4     75.9     70.0     87.2     30.0     12.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       39)
      23        4        8        6        5       35       15
 

Updated May 13, 2005