SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 07/03/07                         |
--------------------------------------------------------------| 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:       16,494
COMMITMENTS
   3,721    1,772      212   12,084   14,044   16,017   16,028      477      466

CHANGES FROM 06/26/07 (CHANGE IN OPEN INTEREST:       -396)
     499       -9       25   -1,122     -509     -598     -493      202       97

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    22.6     10.7      1.3     73.3     85.1     97.1     97.2      2.9      2.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       26)
      11        5        4        9       10       21       18
 

Updated July 9, 2007