SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED 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:       35,737
COMMITMENTS
  14,977    5,111    7,584   12,752   22,804   35,314   35,499      423      237

CHANGES FROM 07/22/08 (CHANGE IN OPEN INTEREST:      1,088)
     173      428    1,000      -39     -377    1,134    1,051      -47       36

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    41.9     14.3     21.2     35.7     63.8     98.8     99.3      1.2      0.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       39)
      15       10       14       13       13       34       31
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
OPTION AND FUTURES COMBINED 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:        6,496
COMMITMENTS
   3,607    3,304    2,257        0      754    5,864    6,315      632      181

CHANGES FROM 07/22/08 (CHANGE IN OPEN INTEREST:        665)
     443      459      212        0        1      655      672       10       -7

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    55.5     50.9     34.8      0.0     11.6     90.3     97.2      9.7      2.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       23)
      13        6       12        0        3       19       16


Updated August 1, 2008