SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 10/02/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 25 U.S. EPA SO2 EMMISSION              OPEN INTEREST:       24,772
COMMITMENTS
   4,217    2,533    3,118   17,313   19,002   24,647   24,653      125      119

CHANGES FROM 09/25/07 (CHANGE IN OPEN INTEREST:        181)
    -461      197      -94      833      180      278      282      -97     -102

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    17.0     10.2     12.6     69.9     76.7     99.5     99.5      0.5      0.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       34)
      11       11       12       11       12       27       30


Updated October 5, 2007