```
 
 
SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/04/10          |
--------------------------------------------------------------| 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:       18,695
COMMITMENTS
  12,353      340       27    6,309   18,328   18,689   18,695        6        0

CHANGES FROM 04/27/10 (CHANGE IN OPEN INTEREST:       -108)
     -21       27        2      -87     -138     -106     -108       -2        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    66.1      1.8      0.1     33.7     98.0    100.0    100.0      0.0      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       26)
       5        2        1        9       14       14       17
 
 
SULFUR FINANCIAL INSTR 2009 - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006265
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/04/10          |
--------------------------------------------------------------| 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:       31,779
COMMITMENTS
  22,821    7,206      187    8,679   24,361   31,688   31,755       91       24

CHANGES FROM 04/27/10 (CHANGE IN OPEN INTEREST:     -1,915)
    -146     -120     -226   -1,544   -1,560   -1,915   -1,906        0       -9

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    71.8     22.7      0.6     27.3     76.7     99.7     99.9      0.3      0.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       29)
       9        2        2       15       14       25       17
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/04/10          |
--------------------------------------------------------------| 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:        3,971
COMMITMENTS
   2,671      447      998       54    2,446    3,724    3,891      248       81

CHANGES FROM 04/27/10 (CHANGE IN OPEN INTEREST:        -15)
     -25       -3        1       -0      -24      -25      -26       10       11

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    67.3     11.2     25.1      1.4     61.6     93.8     98.0      6.2      2.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       24)
      20        2        7        2        2       24        9
```

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Updated May 7, 2010