SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 07/10/07                         |
--------------------------------------------------------------| 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:       16,498
COMMITMENTS
   3,666    1,368      208   11,839   14,126   15,713   15,702      785      796

CHANGES FROM 07/03/07 (CHANGE IN OPEN INTEREST:          4)
     -55     -404       -4     -245       82     -304     -326      308      330

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    22.2      8.3      1.3     71.8     85.6     95.2     95.2      4.8      4.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       27)
      10        7        4        8       10       19       20
 

Updated July 13, 2007