```
 
 
SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY 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:       14,340
COMMITMENTS
  10,712      327        0    3,540   13,908   14,252   14,235       88      105

CHANGES FROM 03/23/10 (CHANGE IN OPEN INTEREST:       -362)
     213        0        0     -550     -347     -337     -347      -25      -15

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    74.7      2.3      0.0     24.7     97.0     99.4     99.3      0.6      0.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       30)
       7        3        0        8       14       15       17
 
 
SULFUR FINANCIAL INSTR 2009 - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006265
FUTURES ONLY 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:       24,802
COMMITMENTS
  17,880    5,537    1,552    4,985   17,361   24,417   24,450      385      352

CHANGES FROM 03/23/10 (CHANGE IN OPEN INTEREST:      1,754)
     120     -128       86    1,228    1,457    1,434    1,415      320      339

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    72.1     22.3      6.3     20.1     70.0     98.4     98.6      1.6      1.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       24)
       5        3        1       12       10       18       13
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
FUTURES ONLY 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:        2,428
COMMITMENTS
   2,205      563        1       51    1,864    2,257    2,428      171        0

CHANGES FROM 03/23/10 (CHANGE IN OPEN INTEREST:         20)
      38        1        0        0       20       38       21      -18       -1

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    90.8     23.2      0.0      2.1     76.8     93.0    100.0      7.0      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       23)
      19        2        1        1        2       21        4
 
 
RGGI CO2 ALLOWANCE 2009 - CHICAGO CLIMATE FUTURES EXCHANGE           Code-00626U
FUTURES ONLY 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 TRADERS
     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
```

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Updated April 2, 2010