SULFUR FINANCIAL INSTRUMENT - CHICAGO CLIMATE FUTURES EXCHANGE       Code-006261
FUTURES ONLY POSITIONS AS OF 10/02/07                         |
--------------------------------------------------------------| 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:       17,807
COMMITMENTS
   6,147    2,467      664   10,908   14,600   17,719   17,731       88       76

CHANGES FROM 09/25/07 (CHANGE IN OPEN INTEREST:       -607)
     -72     -359      -43     -358      -72     -473     -474     -134     -133

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    34.5     13.9      3.7     61.3     82.0     99.5     99.6      0.5      0.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       33)
      10       11        6        9       11       21       26
 

Updated October 5, 2007