SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 03/11/08                         |
--------------------------------------------------------------| 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:       24,291
COMMITMENTS
   9,526    2,717      860   13,764   20,571   24,150   24,148      141      143

CHANGES FROM 03/04/08 (CHANGE IN OPEN INTEREST:      3,471)
      33     -132      202    3,174    3,279    3,409    3,349       62      122

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    39.2     11.2      3.5     56.7     84.7     99.4     99.4      0.6      0.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       29)
      10        7        5       11       11       22       22
 

Updated March 14, 2008