```
 
 
SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 08/31/10          |
--------------------------------------------------------------| 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:       17,645
COMMITMENTS
  12,341       81       47    5,235   17,509   17,623   17,637       22        8

CHANGES FROM 08/24/10 (CHANGE IN OPEN INTEREST:       -136)
      -0       81       -0     -131     -207     -131     -126       -5      -10

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    69.9      0.5      0.3     29.7     99.2     99.9    100.0      0.1      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       23)
       4        1        1        7       13       11       15
 
 
SULFUR FINANCIAL INSTR 2009 - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006265
OPTION AND FUTURES COMBINED POSITIONS AS OF 08/31/10          |
--------------------------------------------------------------| 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:       22,174
COMMITMENTS
  14,796       35       25    7,276   22,090   22,097   22,149       77       25

CHANGES FROM 08/24/10 (CHANGE IN OPEN INTEREST:     -1,061)
    -241        4      -25     -822   -1,035   -1,089   -1,056       28       -5

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    66.7      0.2      0.1     32.8     99.6     99.7     99.9      0.3      0.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       33)
      11        1        1       18       13       30       14
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
OPTION AND FUTURES COMBINED POSITIONS AS OF 08/31/10          |
--------------------------------------------------------------| 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:        4,100
COMMITMENTS
   3,002      572      879        0    2,602    3,881    4,052      219       48

CHANGES FROM 08/24/10 (CHANGE IN OPEN INTEREST:        -47)
     -41      -14        3        0      -30      -38      -41       -9       -6

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    73.2     14.0     21.4      0.0     63.5     94.7     98.8      5.3      1.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       23)
      19        2        7        0        2       21        9
 
 
RGGI CO2 ALLOWANCE 2009 - CHICAGO CLIMATE FUTURES EXCHANGE           Code-00626U
OPTION AND FUTURES COMBINED POSITIONS AS OF 08/31/10          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1000 RGGI CO2 ALLOWANCES)              OPEN INTEREST:       11,897
COMMITMENTS
     528      100       89   11,270   11,701   11,887   11,890       10        7

CHANGES FROM 08/24/10 (CHANGE IN OPEN INTEREST:         68)
      42        0       -6       55       69       91       63      -23        5

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     4.4      0.8      0.7     94.7     98.4     99.9     99.9      0.1      0.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       22)
       6        1        3       11        8       17       12
```

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Updated September 3, 2010