SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY 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:       14,636
COMMITMENTS
   3,208      499      562   10,468   13,355   14,238   14,416      398      220

CHANGES FROM 05/29/07 (CHANGE IN OPEN INTEREST:       -417)
    -321     -210      200     -522     -461     -643     -471      226       54

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    21.9      3.4      3.8     71.5     91.2     97.3     98.5      2.7      1.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       27)
      12        4        4       10       11       23       18
 

Updated June 8, 2007