SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 09/25/07          |
--------------------------------------------------------------| 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:       24,591
COMMITMENTS
   4,678    2,337    3,212   16,480   18,822   24,369   24,371      222      221

CHANGES FROM 09/18/07 (CHANGE IN OPEN INTEREST:      1,676)
     751      -40      295      807    1,569    1,853    1,824     -176     -148

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    19.0      9.5     13.1     67.0     76.5     99.1     99.1      0.9      0.9

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       34)
      11       11       11       12       12       28       29


Updated September 28, 2007