GULF # 6 FUEL 3.0% SULFUR SWAP - NEW YORK MERCANTILE EXCHANGE        Code-02165A
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 BARRELS)                         OPEN INTEREST:        7,664
COMMITMENTS
   1,175        0      325    4,964    7,289    6,464    7,614    1,200       50

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:       -165)
     425        0      100     -690     -265     -165     -165        0        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    15.3      0.0      4.2     64.8     95.1     84.3     99.3     15.7      0.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       22)
       2        0        2       16       13       18       15
 
 
NY RES FUEL 1.0% SULFUR SWAP - NEW YORK MERCANTILE EXCHANGE          Code-02165B
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 BARRELS)                         OPEN INTEREST:       14,607
COMMITMENTS
      75    6,354       21   14,071    6,657   14,167   13,032      440    1,575

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:     -1,722)
       0   -1,124        0   -1,697     -559   -1,697   -1,683      -25      -39

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     0.5     43.5      0.1     96.3     45.6     97.0     89.2      3.0     10.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       35)
       1        2        1       28       26       30       28
 
 
EUR 3.5% FUEL OIL RTD CAL SWAP - NEW YORK MERCANTILE EXCHANGE        Code-02165E
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 METRIC TONS)                     OPEN INTEREST:        2,041
COMMITMENTS
       0       22        7    1,752    1,580    1,759    1,609      282      432

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:          .)
       .        .        .        .        .        .        .        .        .

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     0.0      1.1      0.3     85.8     77.4     86.2     78.8     13.8     21.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       22)
       0        1        1       20       18       21       19
 
 
SING FUEL OIL 180 CAL SWAP - NEW YORK MERCANTILE EXCHANGE            Code-02165G
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 METRIC TONS)                     OPEN INTEREST:        3,400
COMMITMENTS
       0       90       30    2,691    2,531    2,721    2,651      679      749

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:        306)
       0       -5       10      463      300      473      305     -167        1

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     0.0      2.6      0.9     79.1     74.4     80.0     78.0     20.0     22.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       33)
       0        1        1       26       28       27       29
 
 
NO. 2 HEATING OIL, N.Y. HARBOR - NEW YORK MERCANTILE EXCHANGE        Code-022651
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 42,000 U.S. GALLONS)                   OPEN INTEREST:      226,418
COMMITMENTS
  31,281   23,073   36,666  127,602  140,784  195,549  200,523   30,869   25,895

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:     -6,717)
   5,306    1,566     -766   -8,679   -3,115   -4,139   -2,315   -2,578   -4,401

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    13.8     10.2     16.2     56.4     62.2     86.4     88.6     13.6     11.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      139)
      31       35       32       59       67      111      115
 
 
NATURAL GAS - NEW YORK MERCANTILE EXCHANGE                           Code-023651
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(10,000 MMBTU'S)                                     OPEN INTEREST:    1,258,965
COMMITMENTS
  68,862  144,439  491,609  626,365  583,795  1186836  1219843   72,129   39,122

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:    -21,568)
  -1,914   -2,824  -12,121   -2,748   -3,416  -16,783  -18,361   -4,785   -3,207

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     5.5     11.5     39.0     49.8     46.4     94.3     96.9      5.7      3.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      215)
      59       68       84       83       78      189      186
 
 
MICHCON BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-02365A
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       88,068
COMMITMENTS
   1,846   14,184    3,024   73,951   64,185   78,821   81,393    9,247    6,675

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:     -4,407)
    -975     -700       29   -3,029   -3,152   -3,975   -3,823     -432     -584

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     2.1     16.1      3.4     84.0     72.9     89.5     92.4     10.5      7.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       27)
       2        2        2       19       19       21       23
 
 
PERMIAN BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-02365B
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       56,044
COMMITMENTS
   1,948    1,366    2,663   40,044   41,386   44,655   45,415   11,389   10,629

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:     -6,642)
     962     -184   -1,955   -5,667   -4,930   -6,660   -7,069       18      427

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     3.5      2.4      4.8     71.5     73.8     79.7     81.0     20.3     19.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       27)
       1        1        2       21       17       23       19
 
 
M-3 BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                        Code-02365C
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      123,858
COMMITMENTS
  11,318    1,566    7,400   94,582  106,402  113,300  115,368   10,558    8,490

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:     -4,603)
     327     -874      452   -5,407   -4,444   -4,628   -4,866       25      263

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     9.1      1.3      6.0     76.4     85.9     91.5     93.1      8.5      6.9

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       35)
       3        1        4       21       27       25       31
 
 
TCO BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                        Code-02365D
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       90,976
COMMITMENTS
  24,607   14,715    3,053   53,343   62,442   81,003   80,210    9,973   10,766

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:      1,839)
  -1,824   -1,377      392    3,976    1,617    2,544      632     -705    1,207

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    27.0     16.2      3.4     58.6     68.6     89.0     88.2     11.0     11.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       30)
       2        3        2       21       19       25       22
 
 
MALIN BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                      Code-02365E
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       76,972
COMMITMENTS
   2,955    1,119    7,254   62,640   62,917   72,849   71,290    4,123    5,682

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:     -4,563)
    -492      403     -329   -3,987   -3,220   -4,808   -3,146      245   -1,417

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     3.8      1.5      9.4     81.4     81.7     94.6     92.6      5.4      7.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       30)
       3        1        4       18       20       22       24
 
 
PG&E CITYGATE BASIS SWAP - NEW YORK MERCANTILE EXCHANGE              Code-02365F
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       62,458
COMMITMENTS
   8,257        0    1,885   47,671   53,958   57,813   55,843    4,645    6,615

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:     -6,719)
   1,522        0   -1,083   -6,383   -5,173   -5,944   -6,256     -775     -463

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    13.2      0.0      3.0     76.3     86.4     92.6     89.4      7.4     10.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       30)
       2        0        2       19       20       21       22
 
 
NGPL TEXOK BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                 Code-02365G
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       96,740
COMMITMENTS
   2,725      774    6,713   77,710   78,512   87,148   85,999    9,592   10,741

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:      1,469)
     149   -2,544      865     -159    2,352      855      673      614      796

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     2.8      0.8      6.9     80.3     81.2     90.1     88.9      9.9     11.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       37)
       2        2        3       25       28       29       31
 
 
NGPL MID-CON BASIS SWAP - NEW YORK MERCANTILE EXCHANGE               Code-02365K
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       88,724
COMMITMENTS
       0    7,147    3,096   74,014   69,235   77,110   79,478   11,614    9,246

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:      1,632)
       0      865     -452    2,084      913    1,632    1,326        0      306

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     0.0      8.1      3.5     83.4     78.0     86.9     89.6     13.1     10.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       31)
       0        2        2       22       21       24       23
 
 
DOMINION BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                   Code-02365N
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       67,887
COMMITMENTS
  10,994      355    4,494   45,696   55,712   61,184   60,561    6,703    7,326

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:     -1,461)
  -1,538   -1,513    2,168   -1,464    1,012     -834    1,667     -627   -3,128

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    16.2      0.5      6.6     67.3     82.1     90.1     89.2      9.9     10.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       30)
       3        1        3       24       21       28       24
 
 
WAHA BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                       Code-02365O
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      122,540
COMMITMENTS
   5,468   13,389    6,326  101,180   88,254  112,974  107,969    9,566   14,571

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:       -689)
  -2,763       90      530    2,025      981     -208    1,601     -481   -2,290

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     4.5     10.9      5.2     82.6     72.0     92.2     88.1      7.8     11.9

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       42)
       3        3        3       26       26       30       31
 
 
CIG BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                        Code-02365P
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       64,364
COMMITMENTS
       0    8,332    1,382   48,807   43,911   50,189   53,625   14,175   10,739

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:      2,063)
       0      995     -278    3,325    1,924    3,047    2,641     -984     -578

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     0.0     12.9      2.1     75.8     68.2     78.0     83.3     22.0     16.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       26)
       0        2        2       18       17       20       19
 
 
ALBERTA BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-035650
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      159,225
COMMITMENTS
   4,398   22,522   11,234  131,941  120,124  147,573  153,880   11,652    5,345

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:    -12,750)
    -662   -2,376   -1,227  -10,334   -8,678  -12,223  -12,281     -527     -469

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     2.8     14.1      7.1     82.9     75.4     92.7     96.6      7.3      3.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       48)
       3        6        8       37       35       45       44
 
 
CHICAGO BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-035651
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       88,619
COMMITMENTS
   1,961    8,625    3,562   76,501   64,444   82,024   76,631    6,595   11,988

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:     -8,783)
    -117   -3,508     -356   -8,425   -5,788   -8,898   -9,652      115      869

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     2.2      9.7      4.0     86.3     72.7     92.6     86.5      7.4     13.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       30)
       3        2        4       19       18       23       23
 
 
HOUSTON SHIP CH BASIS SWAP - NEW YORK MERCANTILE EXCHANGE            Code-035653
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      273,428
COMMITMENTS
  14,048      593    7,941  238,286  253,991  260,275  262,525   13,153   10,903

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:    -14,036)
  -1,211     -768     -888  -12,036  -11,918  -14,135  -13,574       99     -462

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     5.1      0.2      2.9     87.1     92.9     95.2     96.0      4.8      4.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       55)
       6        2        6       38       41       45       48
 
 
NW PIPE ROCKIES BASIS SWAP - NEW YORK MERCANTILE EXCHANGE            Code-035654
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      170,370
COMMITMENTS
   7,995    6,279   15,503  132,545  142,623  156,043  164,405   14,327    5,965

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:     -8,501)
     839   -1,020   -1,381   -6,822   -6,520   -7,364   -8,921   -1,137      420

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     4.7      3.7      9.1     77.8     83.7     91.6     96.5      8.4      3.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       46)
       2        3        4       36       34       40       39
 
 
PANHANDLE BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                  Code-035655
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      167,333
COMMITMENTS
  11,304    3,962    9,050  124,818  138,919  145,172  151,931   22,161   15,402

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:    -10,026)
   2,038      582   -2,063  -10,373   -9,927  -10,398  -11,408      372    1,382

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     6.8      2.4      5.4     74.6     83.0     86.8     90.8     13.2      9.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       40)
       3        2        4       28       30       33       34
 
 
SAN JUAN BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                   Code-035656
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       48,284
COMMITMENTS
       0    3,651    2,131   33,934   29,758   36,065   35,540   12,219   12,744

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:     -1,560)
       0     -417       89   -2,934     -908   -2,845   -1,236    1,285     -324

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     0.0      7.6      4.4     70.3     61.6     74.7     73.6     25.3     26.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       21)
       0        1        1       16       15       17       16
 
 
SOCAL BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                      Code-035657
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      245,071
COMMITMENTS
  27,487    7,252   22,028  180,815  199,324  230,330  228,604   14,741   16,467

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:    -10,794)
  -1,419    3,280   -1,084   -6,903  -12,541   -9,406  -10,345   -1,388     -449

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    11.2      3.0      9.0     73.8     81.3     94.0     93.3      6.0      6.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       53)
       7        4        8       37       37       48       45
 
 
TRANSCO ZONE 6 BASIS SWAP - NEW YORK MERCANTILE EXCHANGE             Code-035658
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       62,536
COMMITMENTS
   1,372    6,402    2,998   51,700   42,315   56,070   51,715    6,466   10,821

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:     -3,700)
     -91      484     -375   -3,472   -3,188   -3,938   -3,079      238     -621

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     2.2     10.2      4.8     82.7     67.7     89.7     82.7     10.3     17.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       29)
       1        2        3       23       21       26       24
 
 
HENRY HUB GAS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-03565B
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:    2,492,100
COMMITMENTS
 191,577   47,184  811,893  1457057  1619283  2460527  2478360   31,573   13,740

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:   -100,441)
  -1,801  -29,215  -18,796  -81,870  -52,734 -102,467 -100,745    2,026      304

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     7.7      1.9     32.6     58.5     65.0     98.7     99.4      1.3      0.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      152)
      31       18       42       99       88      145      133
 
 
HENRY HUB PENULTIMATE GAS SWAP - NEW YORK MERCANTILE EXCHANGE        Code-03565C
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:    1,033,948
COMMITMENTS
 131,441  305,883  163,097  733,978  561,320  1028516  1030300    5,432    3,648

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:    -37,867)
 -27,816  -18,203   -6,299   -3,681  -13,522  -37,796  -38,024      -71      157

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    12.7     29.6     15.8     71.0     54.3     99.5     99.6      0.5      0.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       73)
      20       16       29       37       36       68       70
 
 
PJM ELECTRICITY MONTHLY - NEW YORK MERCANTILE EXCHANGE               Code-064657
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(40 MEGAWATT HOURS PER PEAK DAY)                     OPEN INTEREST:       86,379
COMMITMENTS
   2,050    1,142    3,390   80,512   81,343   85,953   85,876      426      503

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:     -1,919)
       0       -1     -210   -1,789   -1,870   -1,999   -2,082       80      163

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     2.4      1.3      3.9     93.2     94.2     99.5     99.4      0.5      0.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       57)
       5        7        9       40       37       51       47
 
 
NYISO ZONE A LBMP SWAP - NEW YORK MERCANTILE EXCHANGE                Code-06465A
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS 0F 400 MEGAWATT HOURS)                    OPEN INTEREST:       18,428
COMMITMENTS
     726       42      810   16,827   17,345   18,363   18,197       65      231

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:          0)
       0        0        0        0        0        0        0        0        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     3.9      0.2      4.4     91.3     94.1     99.6     98.7      0.4      1.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       27)
       1        1        1       14       19       15       21
 
 
ISO NEW ENGLAND LMP SWAP - NEW YORK MERCANTILE EXCHANGE              Code-06465H
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(40 MEGAWATT HOURS PER PEAK DAY)                     OPEN INTEREST:       19,181
COMMITMENTS
   1,758        0      245   16,804   18,062   18,806   18,307      375      875

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:        -17)
     105        0     -101      -67       32      -63      -69       47       52

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     9.2      0.0      1.3     87.6     94.2     98.0     95.4      2.0      4.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       27)
       2        0        2       18       19       20       21
 
 
NORTH ILL CAL MONTH LMP SWAP - NEW YORK MERCANTILE EXCHANGE          Code-06465I
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(40 MEGAWATT HOURS PER PEAK DAY)                     OPEN INTEREST:       13,609
COMMITMENTS
     960       60      110   11,769   12,933   12,839   13,103      770      506

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:       -811)
    -127        0      -10     -224     -705     -361     -715     -450      -96

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     7.1      0.4      0.8     86.5     95.0     94.3     96.3      5.7      3.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       22)
       1        1        1       16       13       17       15
 
 
PJM CAL MONTH OFF PK LMP SWAP - NEW YORK MERCANTILE EXCHANGE         Code-06465M
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2.5 MEGAWATTS PER OFF PEAK HRS)                     OPEN INTEREST:       28,409
COMMITMENTS
     963        0      513   26,263   27,614   27,739   28,127      670      282

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:     -1,329)
      85        0     -109   -1,287   -1,170   -1,311   -1,279      -18      -50

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     3.4      0.0      1.8     92.4     97.2     97.6     99.0      2.4      1.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       34)
       3        0        2       24       22       27       24
 
 
NORTH ILL OFF PK LMP SWAP - NEW YORK MERCANTILE EXCHANGE             Code-06465N
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2.5 MEGAWATTS PER OFF PEAK HRS)                     OPEN INTEREST:       27,162
COMMITMENTS
     360      664    1,520   24,786   24,594   26,666   26,778      496      384

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:       -982)
     120      -56     -140     -938     -756     -958     -952      -24      -30

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     1.3      2.4      5.6     91.3     90.5     98.2     98.6      1.8      1.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       25)
       2        1        1       19       17       21       19
 
 
ISO NEW ENG OFF PK LMP SWAP - NEW YORK MERCANTILE EXCHANGE           Code-06465S
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(2.5 MEGAWATTS PER OFF PEAK HRS)                     OPEN INTEREST:       10,422
COMMITMENTS
       0      280      520    9,138    8,946    9,658    9,746      764      676

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:       -418)
       0     -180      -40     -746     -672     -786     -892      368      474

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     0.0      2.7      5.0     87.7     85.8     92.7     93.5      7.3      6.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       20)
       0        1        1       14       14       15       15
 
 
CRUDE OIL, LIGHT SWEET - NEW YORK MERCANTILE EXCHANGE                Code-067651
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 BARRELS)                         OPEN INTEREST:    2,344,579
COMMITMENTS
 196,326  116,435  631,045  1436495  1511924  2263866  2259403   80,713   85,175

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:     47,069)
  -1,049   -7,901   10,603   37,642   41,986   47,196   44,688     -127    2,381

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     8.4      5.0     26.9     61.3     64.5     96.6     96.4      3.4      3.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      352)
     109      118      173       93      101      298      314
 
 
DUBAI CRUDE OIL CALENDAR SWAP - NEW YORK MERCANTILE EXCHANGE         Code-06765G
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 BARRELS)                         OPEN INTEREST:       17,245
COMMITMENTS
       0        0        0   17,245   17,245   17,245   17,245        0        0

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:     -4,590)
       0        0        0   -4,590   -4,540   -4,590   -4,540        0      -50

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     0.0      0.0      0.0    100.0    100.0    100.0    100.0      0.0      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       23)
       0        0        0       18       18       18       18
 
 
WTI CRUDE OIL FINANCIAL - NEW YORK MERCANTILE EXCHANGE               Code-06765I
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 BARRELS)                         OPEN INTEREST:       70,382
COMMITMENTS
   2,347   11,039   23,635   39,071   30,891   65,053   65,565    5,329    4,817

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:      4,209)
    -178      980    1,901    2,299    2,047    4,022    4,928      187     -719

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
     3.3     15.7     33.6     55.5     43.9     92.4     93.2      7.6      6.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       32)
       8        7       14       17       17       31       32
 
 
PALLADIUM - NEW YORK MERCANTILE EXCHANGE                             Code-075651
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 100 TROY OUNCES)                       OPEN INTEREST:       20,105
COMMITMENTS
  13,710    2,234      317    3,427   17,545   17,454   20,096    2,651        9

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:        224)
     484     -171      317     -178      414      623      560     -399     -336

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    68.2     11.1      1.6     17.0     87.3     86.8    100.0     13.2      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      139)
      86        9        5       15       29      106       42
 
 
PLATINUM - NEW YORK MERCANTILE EXCHANGE                              Code-076651
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 50 TROY OUNCES)                        OPEN INTEREST:       14,652
COMMITMENTS
   9,662    1,104      183    1,871   12,881   11,716   14,168    2,936      484

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:       -115)
     -91     -386      183     -139      322      -47      119      -68     -234

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    65.9      7.5      1.2     12.8     87.9     80.0     96.7     20.0      3.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       86)
      43        7        2        7       27       52       36
 
 
GASOLINE BLENDSTOCK (RBOB) - NEW YORK MERCANTILE EXCHANGE            Code-111659
OPTION AND FUTURES COMBINED POSITIONS AS OF 05/01/07          |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  Long  | Short  |Spreads |  Long  | Short  |  Long  | Short  |  Long  | Short
--------------------------------------------------------------------------------
(CONTRACTS OF 42,000 U.S. GALLONS)                   OPEN INTEREST:      221,515
COMMITMENTS
  46,264   11,025   37,896  105,151  145,678  189,310  194,599   32,205   26,916

CHANGES FROM 04/24/07 (CHANGE IN OPEN INTEREST:     -9,933)
   5,421     -931    1,707  -18,461   -8,663  -11,333   -7,887    1,400   -2,045

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADER
    20.9      5.0     17.1     47.5     65.8     85.5     87.8     14.5     12.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      199)
      69       29       44       73       90      162      147
 

Updated April 27, 2007