SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 04/07/09                         |
--------------------------------------------------------------| 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:       22,468
COMMITMENTS
  16,293      357      672    5,345   21,317   22,310   22,346      158      122

CHANGES FROM 03/31/09 (CHANGE IN OPEN INTEREST:     -1,530)
      57     -125        1   -1,525   -1,368   -1,467   -1,492      -63      -38

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    72.5      1.6      3.0     23.8     94.9     99.3     99.5      0.7      0.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       34)
       8        5        4       13       15       23       22
 
 
CARBON FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006268
FUTURES ONLY POSITIONS AS OF 04/07/09                         |
--------------------------------------------------------------| 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:        3,660
COMMITMENTS
   2,271    2,524    1,011      129      108    3,411    3,643      249       17

CHANGES FROM 03/31/09 (CHANGE IN OPEN INTEREST:     -3,216)
  -2,103    1,104   -1,096        0   -3,223   -3,199   -3,215      -17       -1

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    62.0     69.0     27.6      3.5      3.0     93.2     99.5      6.8      0.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       28)
      19        6        3        2        2       24        9
 
 
RGGI CO2 ALLOWANCE - CHICAGO CLIMATE FUTURES EXCHANGE                Code-00626U
FUTURES ONLY POSITIONS AS OF 04/07/09                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 1000 RGGI CO2 ALLOWANCES)              OPEN INTEREST:        9,743
COMMITMENTS
   1,466    4,330      221    7,169    4,300    8,856    8,851      887      892

CHANGES FROM 03/31/09 (CHANGE IN OPEN INTEREST:        611)
     533      873     -720      -32     -393     -219     -240      830      851

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    15.0     44.4      2.3     73.6     44.1     90.9     90.8      9.1      9.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       25)
       4        4        2       11       10       17       14
 

Updated April 10, 2009