```
 
 
SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/11/10          |
--------------------------------------------------------------| 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:       18,207
COMMITMENTS
  12,386      348        0    5,792   17,854   18,178   18,202       29        5

CHANGES FROM 05/04/10 (CHANGE IN OPEN INTEREST:       -488)
      33        8      -27     -517     -474     -511     -493       23        5

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    68.0      1.9      0.0     31.8     98.1     99.8    100.0      0.2      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       26)
       4        2        0       10       15       14       17
 
 
SULFUR FINANCIAL INSTR 2009 - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006265
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/11/10          |
--------------------------------------------------------------| 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:       30,126
COMMITMENTS
  22,191    7,064       62    7,792   22,992   30,046   30,119       80        7

CHANGES FROM 05/04/10 (CHANGE IN OPEN INTEREST:     -1,653)
    -630     -142     -125     -887   -1,369   -1,642   -1,636      -11      -17

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    73.7     23.4      0.2     25.9     76.3     99.7    100.0      0.3      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       30)
       9        2        2       16       15       26       18
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/11/10          |
--------------------------------------------------------------| 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:        3,916
COMMITMENTS
   2,663      450    1,000       35    2,406    3,698    3,856      218       60

CHANGES FROM 05/04/10 (CHANGE IN OPEN INTEREST:        -55)
      -8        3        2      -19      -40      -26      -35      -30      -20

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    68.0     11.5     25.5      0.9     61.4     94.4     98.5      5.6      1.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       24)
      20        2        7        2        2       24        9
```

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Updated May 14, 2010