```
 
 
SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/18/10          |
--------------------------------------------------------------| 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:       16,859
COMMITMENTS
  12,388      351        0    4,456   16,503   16,843   16,854       16        5

CHANGES FROM 05/11/10 (CHANGE IN OPEN INTEREST:     -1,348)
       2        3        0   -1,337   -1,351   -1,335   -1,348      -13        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    73.5      2.1      0.0     26.4     97.9     99.9    100.0      0.1      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       26)
       4        2        0        9       16       13       18
 
 
SULFUR FINANCIAL INSTR 2009 - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006265
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/18/10          |
--------------------------------------------------------------| 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:       31,301
COMMITMENTS
  22,192    7,067       65    8,968   24,154   31,224   31,285       77       16

CHANGES FROM 05/11/10 (CHANGE IN OPEN INTEREST:      1,176)
       0        2        3    1,176    1,162    1,179    1,167       -3        9

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    70.9     22.6      0.2     28.7     77.2     99.8     99.9      0.2      0.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       31)
       9        2        3       17       15       27       19
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/18/10          |
--------------------------------------------------------------| 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:        3,857
COMMITMENTS
   2,605      444    1,002       34    2,349    3,642    3,796      216       61

CHANGES FROM 05/11/10 (CHANGE IN OPEN INTEREST:        -59)
     -58       -6        3       -1      -56      -56      -60       -2        1

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    67.5     11.5     26.0      0.9     60.9     94.4     98.4      5.6      1.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       24)
      20        2        7        2        2       24        9
```

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Updated May 27, 2010