```
 
 
SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 03/30/10          |
--------------------------------------------------------------| 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:       14,781
COMMITMENTS
  10,721      327       38    3,934   14,330   14,693   14,695       88       86

CHANGES FROM 03/23/10 (CHANGE IN OPEN INTEREST:       -290)
     215        0        6     -485     -278     -265     -272      -25      -18

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    72.5      2.2      0.3     26.6     97.0     99.4     99.4      0.6      0.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       31)
       8        3        2        9       14       17       19
 
 
SULFUR FINANCIAL INSTR 2009 - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006265
OPTION AND FUTURES COMBINED POSITIONS AS OF 03/30/10          |
--------------------------------------------------------------| 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:       26,183
COMMITMENTS
  18,288    5,387    1,962    5,549   18,482   25,798   25,831      385      352

CHANGES FROM 03/23/10 (CHANGE IN OPEN INTEREST:      1,002)
       6     -126      -92      769      882      682      663      320      339

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    69.8     20.6      7.5     21.2     70.6     98.5     98.7      1.5      1.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       27)
       6        4        3       13       12       21       17
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
OPTION AND FUTURES COMBINED POSITIONS AS OF 03/30/10          |
--------------------------------------------------------------| 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:        3,954
COMMITMENTS
   2,664      435      994       54    2,468    3,712    3,897      242       57

CHANGES FROM 03/23/10 (CHANGE IN OPEN INTEREST:         13)
      32       -3        1       -1       16       32       13      -19       -1

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    67.4     11.0     25.1      1.4     62.4     93.9     98.6      6.1      1.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       24)
      20        2        7        2        2       24        9
 
 
RGGI CO2 ALLOWANCE 2009 - CHICAGO CLIMATE FUTURES EXCHANGE           Code-00626U
OPTION AND FUTURES COMBINED POSITIONS AS OF 03/30/10          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1000 RGGI CO2 ALLOWANCES)              OPEN INTEREST:       10,309
COMMITMENTS
     819        0        5    9,200   10,243   10,024   10,248      285       61

CHANGES FROM 03/23/10 (CHANGE IN OPEN INTEREST:        806)
     115      -31      -39      670      848      746      778       60       28

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     7.9      0.0      0.0     89.2     99.4     97.2     99.4      2.8      0.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       20)
       3        0        1       10       10       13       11
 
 
RGGI CO2 ALLOWANCE 2010 - CHICAGO CLIMATE FUTURES EXCHANGE           Code-00626V
OPTION AND FUTURES COMBINED POSITIONS AS OF 03/30/10          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1000 RGGI CO2 ALLOWANCES)              OPEN INTEREST:        8,808
COMMITMENTS
     502      144        0    8,301    8,664    8,803    8,808        5        0

CHANGES FROM 03/23/10 (CHANGE IN OPEN INTEREST:       -577)
       0       53      -59     -518     -571     -577     -577        0        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     5.7      1.6      0.0     94.2     98.4     99.9    100.0      0.1      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       20)
       2        1        0       13       10       15       11
```

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Updated April 2, 2010