VIX FUTURES - CBOE FUTURES EXCHANGE                                  Code-1170E1
FUTURES ONLY POSITIONS AS OF 09/12/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
($100 X VBI)                                         OPEN INTEREST:       46,956
COMMITMENTS
   3,126    9,153    1,090   37,763   35,305   41,979   45,548    4,977    1,408

CHANGES FROM 09/05/06 (CHANGE IN OPEN INTEREST:      1,254)
     -50     -372      126    1,536      885    1,612      639     -358      615

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     6.7     19.5      2.3     80.4     75.2     89.4     97.0     10.6      3.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       21)
       6        4        3        9        4       17       10
 

Updated September 15, 2006