SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY 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:       18,414
COMMITMENTS
   6,219    2,826      707   11,266   14,672   18,192   18,205      222      209

CHANGES FROM 09/18/07 (CHANGE IN OPEN INTEREST:      1,482)
     881      121       64      400    1,166    1,345    1,351      137      131

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    33.8     15.3      3.8     61.2     79.7     98.8     98.9      1.2      1.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       33)
      11       11        8       10       10       24       26
 

Updated September 28, 2007