SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 12/31/07          |
--------------------------------------------------------------| 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:       13,347
COMMITMENTS
   3,919    1,475    1,895    6,884    9,352   12,698   12,722      649      625

CHANGES FROM 12/24/07 (CHANGE IN OPEN INTEREST:       -214)
     215     -864      518   -1,478     -389     -746     -736      532      522

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    29.4     11.0     14.2     51.6     70.1     95.1     95.3      4.9      4.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       31)
      11        9       13       10       11       26       28


Updated January 4, 2008