```
 
 
SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 04/20/10                         |
--------------------------------------------------------------| 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:       18,239
COMMITMENTS
  12,428      411        0    5,788   17,783   18,216   18,194       23       45

CHANGES FROM 04/13/10 (CHANGE IN OPEN INTEREST:        769)
      55      -20        0      718      798      773      778       -4       -9

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    68.1      2.3      0.0     31.7     97.5     99.9     99.8      0.1      0.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       27)
       6        3        0        8       13       14       16
 
 
SULFUR FINANCIAL INSTR 2009 - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006265
FUTURES ONLY POSITIONS AS OF 04/20/10                         |
--------------------------------------------------------------| 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:       25,682
COMMITMENTS
  20,678    7,016      153    4,733   18,473   25,564   25,642      118       40

CHANGES FROM 04/13/10 (CHANGE IN OPEN INTEREST:        827)
     167      156        7      617      647      791      810       36       17

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    80.5     27.3      0.6     18.4     71.9     99.5     99.8      0.5      0.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       28)
       7        3        2       13       13       22       16
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
FUTURES ONLY POSITIONS AS OF 04/20/10                         |
--------------------------------------------------------------| 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      593        0       51    1,953    2,376    2,546      171        1

CHANGES FROM 04/13/10 (CHANGE IN OPEN INTEREST:         60)
      70        0        0        0       60       70       60      -10        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    91.3     23.3      0.0      2.0     76.7     93.3    100.0      6.7      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       23)
      19        2        0        1        2       20        4
```

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Updated April 28, 2010