SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 10/09/07                         |
--------------------------------------------------------------| 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:       18,391
COMMITMENTS
   6,587    2,940      868   10,905   14,546   18,360   18,354       31       37

CHANGES FROM 10/02/07 (CHANGE IN OPEN INTEREST:        584)
     440      473      204       -3      -54      641      623      -57      -39

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    35.8     16.0      4.7     59.3     79.1     99.8     99.8      0.2      0.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       34)
      10       11        8       10       11       24       27
 

Updated October 12, 2007