```
 
 
SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 04/27/10                         |
--------------------------------------------------------------| 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:       18,232
COMMITMENTS
  12,338      313        0    5,886   17,919   18,224   18,232        8        0

CHANGES FROM 04/20/10 (CHANGE IN OPEN INTEREST:         -7)
     -90      -98        0       98      136        8       38      -15      -45

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    67.7      1.7      0.0     32.3     98.3    100.0    100.0      0.0      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       28)
       5        2        0        9       15       14       17
 
 
SULFUR FINANCIAL INSTR 2009 - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006265
FUTURES ONLY POSITIONS AS OF 04/27/10                         |
--------------------------------------------------------------| 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:       25,665
COMMITMENTS
  20,347    7,129       58    5,169   18,445   25,574   25,632       91       33

CHANGES FROM 04/20/10 (CHANGE IN OPEN INTEREST:        -17)
    -331      113      -95      436      -28       10      -10      -27       -7

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    79.3     27.8      0.2     20.1     71.9     99.6     99.9      0.4      0.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       25)
       6        2        2       12       12       19       15
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
FUTURES ONLY POSITIONS AS OF 04/27/10                         |
--------------------------------------------------------------| 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:        2,547
COMMITMENTS
   2,325      583        0       51    1,953    2,376    2,536      171       11

CHANGES FROM 04/20/10 (CHANGE IN OPEN INTEREST:          0)
       0      -10        0        0        0        0      -10        0       10

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    91.3     22.9      0.0      2.0     76.7     93.3     99.6      6.7      0.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       23)
      19        2        0        1        2       20        4
```

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Updated April 30, 2010