```
 
 
SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 04/28/09          |
--------------------------------------------------------------| 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:       27,239
COMMITMENTS
  17,769      263      755    8,664   26,186   27,187   27,204       52       35

CHANGES FROM 04/21/09 (CHANGE IN OPEN INTEREST:        492)
      80     -105      -23      443      594      500      466       -8       26

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    65.2      1.0      2.8     31.8     96.1     99.8     99.9      0.2      0.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       32)
       8        3        5       15       17       25       23
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
OPTION AND FUTURES COMBINED POSITIONS AS OF 04/28/09          |
--------------------------------------------------------------| 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:        6,232
COMMITMENTS
   3,450    2,238    2,203      114    1,654    5,767    6,095      465      137

CHANGES FROM 04/21/09 (CHANGE IN OPEN INTEREST:       -715)
    -732      -67      -19      -15     -658     -766     -744       52       30

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    55.4     35.9     35.3      1.8     26.5     92.5     97.8      7.5      2.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       30)
      21        5       11        2        4       27       16
 
 
NITROGEN FIN INS ANNUAL 2009 - CHICAGO CLIMATE FUTURES EXCHANGE      Code-00626F
OPTION AND FUTURES COMBINED POSITIONS AS OF 04/28/09          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1 U.S. EPA CAIR ANNUAL EMM             OPEN INTEREST:       26,425
COMMITMENTS
   2,449      513        0   23,920   25,856   26,369   26,369       56       56

CHANGES FROM 04/21/09 (CHANGE IN OPEN INTEREST:      1,034)
     -50      364        0    1,038      613      988      978       46       56

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     9.3      1.9      0.0     90.5     97.8     99.8     99.8      0.2      0.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       23)
       1        2        0       17       12       18       14
 
 
RGGI CO2 ALLOWANCE - CHICAGO CLIMATE FUTURES EXCHANGE                Code-00626U
OPTION AND FUTURES COMBINED POSITIONS AS OF 04/28/09          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1000 RGGI CO2 ALLOWANCES)              OPEN INTEREST:       15,978
COMMITMENTS
     922    4,930    1,554   13,456    9,428   15,931   15,912       47       67

CHANGES FROM 04/21/09 (CHANGE IN OPEN INTEREST:        584)
    -433      526       80    1,011       24      658      630      -74      -46

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     5.8     30.9      9.7     84.2     59.0     99.7     99.6      0.3      0.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       28)
       4        5        7       18       13       27       20
```

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Updated May 1, 2009