```
 
 
SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
OPTION AND FUTURES COMBINED POSITIONS AS OF 03/23/10          |
--------------------------------------------------------------| 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:       15,071
COMMITMENTS
  10,507      327       31    4,419   14,608   14,958   14,966      113      104

CHANGES FROM 03/16/10 (CHANGE IN OPEN INTEREST:       -232)
     -82       48       15      -36     -151     -103      -89     -129     -143

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    69.7      2.2      0.2     29.3     96.9     99.3     99.3      0.7      0.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       31)
       8        3        2       10       15       18       20
 
 
SULFUR FINANCIAL INSTR 2009 - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006265
OPTION AND FUTURES COMBINED POSITIONS AS OF 03/23/10          |
--------------------------------------------------------------| 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:       25,181
COMMITMENTS
  18,282    5,514    2,054    4,780   17,600   25,116   25,168       65       13

CHANGES FROM 03/16/10 (CHANGE IN OPEN INTEREST:         -8)
    -320       20      205      462      111      348      337     -356     -345

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    72.6     21.9      8.2     19.0     69.9     99.7     99.9      0.3      0.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       28)
       6        4        3       14       14       22       19
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
OPTION AND FUTURES COMBINED POSITIONS AS OF 03/23/10          |
--------------------------------------------------------------| 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:        3,941
COMMITMENTS
   2,632      439      993       55    2,452    3,681    3,884      261       57

CHANGES FROM 03/16/10 (CHANGE IN OPEN INTEREST:          2)
       1        0        0        0        1        2        2       -0       -0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    66.8     11.1     25.2      1.4     62.2     93.4     98.5      6.6      1.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       23)
      19        2        7        2        2       23        9
 
 
RGGI CO2 ALLOWANCE 2009 - CHICAGO CLIMATE FUTURES EXCHANGE           Code-00626U
OPTION AND FUTURES COMBINED POSITIONS AS OF 03/23/10          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1000 RGGI CO2 ALLOWANCES)              OPEN INTEREST:        9,503
COMMITMENTS
     704       31       44    8,530    9,395    9,278    9,470      225       33

CHANGES FROM 03/16/10 (CHANGE IN OPEN INTEREST:          1)
       0        0        0        0        0        0        0        1        1

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     7.4      0.3      0.5     89.8     98.9     97.6     99.7      2.4      0.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       21)
       2        2        2       11       11       15       13
 
 
RGGI CO2 ALLOWANCE 2010 - CHICAGO CLIMATE FUTURES EXCHANGE           Code-00626V
OPTION AND FUTURES COMBINED POSITIONS AS OF 03/23/10          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1000 RGGI CO2 ALLOWANCES)              OPEN INTEREST:        9,385
COMMITMENTS
     502       91       59    8,819    9,235    9,380    9,385        5        0

CHANGES FROM 03/16/10 (CHANGE IN OPEN INTEREST:        -81)
       0        7      -11      -70      -78      -81      -81        0        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     5.3      1.0      0.6     94.0     98.4     99.9    100.0      0.1      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       20)
       2        1        1       13       11       16       12
```

----

Updated March 26, 2010