SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 06/05/07          |
--------------------------------------------------------------| 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:       17,967
COMMITMENTS
   3,176    1,271      707   13,648   15,744   17,531   17,722      436      245

CHANGES FROM 05/29/07 (CHANGE IN OPEN INTEREST:        201)
    -108      217       16      303      151      210      384       -9     -183

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    17.7      7.1      3.9     76.0     87.6     97.6     98.6      2.4      1.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       27)
      11        5        4       11       11       24       18
 

Updated June 8, 2007