SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 12/04/07                         |
--------------------------------------------------------------| 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:       18,443
COMMITMENTS
   7,840    4,999      602    9,987   12,794   18,429   18,395       14       48

CHANGES FROM 11/27/07 (CHANGE IN OPEN INTEREST:     -2,240)
  -1,007    1,828   -1,268       35   -2,822   -2,240   -2,262        0       22

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    42.5     27.1      3.3     54.2     69.4     99.9     99.7      0.1      0.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       33)
      11       10        8        7       10       21       25
 

Updated December 7, 2007