SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 10/23/07                         |
--------------------------------------------------------------| 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:       20,553
COMMITMENTS
   7,591    3,484      920   11,990   16,103   20,501   20,507       52       46

CHANGES FROM 10/16/07 (CHANGE IN OPEN INTEREST:      1,073)
   1,357      538      208     -437      488    1,128    1,234      -55     -161

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    36.9     17.0      4.5     58.3     78.3     99.7     99.8      0.3      0.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       37)
      12       12       10        9       11       25       30
 

Updated October 26, 2007