SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 10/16/07          |
--------------------------------------------------------------| 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:       21,884
COMMITMENTS
   5,856    2,902    1,359   14,560   17,411   21,774   21,672      110      213

CHANGES FROM 10/09/07 (CHANGE IN OPEN INTEREST:     -3,852)
     883     -860   -1,558   -3,089   -1,438   -3,763   -3,856      -89        3

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    26.8     13.3      6.2     66.5     79.6     99.5     99.0      0.5      1.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       34)
      11       10       14       11       12       29       30


Updated October 19, 2007