SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 07/29/08                         |
--------------------------------------------------------------| 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:       29,723
COMMITMENTS
  14,852    3,834    6,339    8,265   19,477   29,456   29,650      267       73

CHANGES FROM 07/22/08 (CHANGE IN OPEN INTEREST:      1,157)
     115      473      951      111     -327    1,177    1,097      -20       60

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    50.0     12.9     21.3     27.8     65.5     99.1     99.8      0.9      0.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       36)
      14        9        9       10       13       29       26
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
FUTURES ONLY POSITIONS AS OF 07/29/08                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 METRIC TONS CCX C02)             OPEN INTEREST:        4,739
COMMITMENTS
   2,979    2,619    1,231        0      754    4,210    4,604      529      135

CHANGES FROM 07/22/08 (CHANGE IN OPEN INTEREST:         62)
     -17       -9       56        0        1       39       48       23       14

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    62.9     55.3     26.0      0.0     15.9     88.8     97.2     11.2      2.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       21)
      13        4        9        0        3       17       13
 

Updated August 1, 2008