SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 07/17/07          |
--------------------------------------------------------------| 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:       19,280
COMMITMENTS
   3,891    1,523      642   14,126   16,365   18,660   18,531      620      749

CHANGES FROM 07/10/07 (CHANGE IN OPEN INTEREST:       -180)
     369     -502      289     -583      168       74      -45     -255     -135

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    20.2      7.9      3.3     73.3     84.9     96.8     96.1      3.2      3.9

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       30)
      11        8        6       10       11       22       24


Updated July 20, 2007