```
 
 
SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY 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:       16,754
COMMITMENTS
  12,294       81        0    4,447   16,665   16,741   16,746       13        8

CHANGES FROM 08/24/10 (CHANGE IN OPEN INTEREST:       -134)
       0       81        0     -129     -205     -129     -124       -5      -10

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    73.4      0.5      0.0     26.5     99.5     99.9    100.0      0.1      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       23)
       4        1        0        6       13       10       14
 
 
SULFUR FINANCIAL INSTR 2009 - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006265
FUTURES ONLY 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:       20,285
COMMITMENTS
  14,498       56        0    5,710   20,204   20,208   20,260       77       25

CHANGES FROM 08/24/10 (CHANGE IN OPEN INTEREST:       -197)
     -92      -15       -2     -131     -175     -225     -192       28       -5

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    71.5      0.3      0.0     28.1     99.6     99.6     99.9      0.4      0.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       30)
       9        1        0       14       10       23       11
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
FUTURES ONLY 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:        2,398
COMMITMENTS
   2,266      441        0        0    1,956    2,266    2,397      132        1

CHANGES FROM 08/24/10 (CHANGE IN OPEN INTEREST:         -7)
       0        0        0        0        0        0        0       -7       -7

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    94.5     18.4      0.0      0.0     81.6     94.5    100.0      5.5      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       22)
      18        2        0        0        2       18        4
 
 
RGGI CO2 ALLOWANCE 2009 - CHICAGO CLIMATE FUTURES EXCHANGE           Code-00626U
FUTURES ONLY 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:       11,849
COMMITMENTS
     482      100       87   11,270   11,655   11,839   11,842       10        7

CHANGES FROM 08/24/10 (CHANGE IN OPEN INTEREST:         66)
      40        0       -6       55       67       89       61      -23        5

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     4.1      0.8      0.7     95.1     98.4     99.9     99.9      0.1      0.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       21)
       5        1        2       11        8       16       11
```

----

Updated September 3, 2010