VIX FUTURES - CBOE FUTURES EXCHANGE                                  Code-1170E1
OPTION AND FUTURES COMBINED POSITIONS AS OF 01/31/06          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
($100 X VBI)                                         OPEN INTEREST:       19,476
COMMITMENTS
   3,055    3,691      428   10,323   13,001   13,806   17,120    5,670    2,356

CHANGES FROM 01/24/06 (CHANGE IN OPEN INTEREST:      4,684)
    -271       96      -33    1,723    3,331    1,419    3,394    3,265    1,290

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    15.7     19.0      2.2     53.0     66.8     70.9     87.9     29.1     12.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       28)
      14        3        9        5        4       25       14
 

Updated February 3, 2006