SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 07/10/07          |
--------------------------------------------------------------| 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:       19,460
COMMITMENTS
   3,522    2,025      354   14,710   16,197   18,585   18,576      875      884

CHANGES FROM 07/03/07 (CHANGE IN OPEN INTEREST:        120)
     -71     -272       11     -133      120     -194     -140      314      260

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    18.1     10.4      1.8     75.6     83.2     95.5     95.5      4.5      4.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       28)
      10        7        5        9       11       20       22


Updated July 13, 2007