NY RES FUEL 1.0% SULFUR SWAP - NEW YORK MERCANTILE EXCHANGE          Code-02165B
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 BARRELS)                         OPEN INTEREST:        6,063
COMMITMENTS
   1,080    1,490       25    4,668    4,239    5,773    5,754      290      309

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:        140)
       0      240     -100      240       57      140      197        0      -57

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    17.8     24.6      0.4     77.0     69.9     95.2     94.9      4.8      5.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       29)
       1        4        1       17       17       19       21
 
 
NO. 2 HEATING OIL, N.Y. HARBOR - NEW YORK MERCANTILE EXCHANGE        Code-022651
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 42,000 U.S. GALLONS)                   OPEN INTEREST:      174,402
COMMITMENTS
  29,780   17,050   29,901   87,182  103,297  146,863  150,248   27,539   24,154

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:      8,228)
   2,349    2,885    5,663     -154    2,466    7,858   11,014      370   -2,786

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    17.1      9.8     17.1     50.0     59.2     84.2     86.2     15.8     13.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      135)
      33       32       34       61       59      116      105
 
 
NATURAL GAS - NEW YORK MERCANTILE EXCHANGE                           Code-023651
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(10,000 MMBTU'S)                                     OPEN INTEREST:      710,064
COMMITMENTS
  58,825   87,791  292,475  278,654  301,282  629,954  681,548   80,110   28,516

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:     22,151)
     242   -4,006   12,970    9,268   19,591   22,480   28,555     -329   -6,404

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     8.3     12.4     41.2     39.2     42.4     88.7     96.0     11.3      4.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      224)
      69       55       84       92       70      207      170
 
 
MICHCON BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-02365A
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       54,072
COMMITMENTS
     170        0    2,361   45,973   45,511   48,504   47,872    5,568    6,200

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:        166)
     170     -189      101     -136     -602      135     -690       31      856

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     0.3      0.0      4.4     85.0     84.2     89.7     88.5     10.3     11.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       23)
       1        0        1       18       19       19       20
 
 
PERMIAN BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-02365B
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       66,647
COMMITMENTS
   7,021    2,500    2,526   49,536   54,723   59,083   59,749    7,564    6,898

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:      3,333)
    -188        0      653    3,451    2,618    3,916    3,271     -583       62

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    10.5      3.8      3.8     74.3     82.1     88.7     89.6     11.3     10.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       29)
       3        1        3       21       18       25       21
 
 
M-3 BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                        Code-02365C
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      123,192
COMMITMENTS
   1,984      439      920  108,297  111,634  111,201  112,993   11,991   10,199

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:      5,086)
       0        0        0    4,900    5,300    4,900    5,300      186     -214

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     1.6      0.4      0.7     87.9     90.6     90.3     91.7      9.7      8.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       32)
       1        1        1       25       21       27       22
 
 
TCO BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                        Code-02365D
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       63,955
COMMITMENTS
   2,568    1,658        0   52,701   53,447   55,269   55,105    8,686    8,850

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:      1,988)
   2,568        0        0     -580    1,706    1,988    1,706        0      282

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     4.0      2.6      0.0     82.4     83.6     86.4     86.2     13.6     13.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       27)
       1        1        0       17       21       18       22
 
 
MALIN BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                      Code-02365E
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       78,972
COMMITMENTS
       0   13,159      332   75,716   58,842   76,048   72,333    2,924    6,639

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:      1,218)
       0   -3,524       30    1,432    4,160    1,462      666     -244      552

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     0.0     16.7      0.4     95.9     74.5     96.3     91.6      3.7      8.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       24)
       0        3        2       20       17       22       20
 
 
PG&E CITYGATE BASIS SWAP - NEW YORK MERCANTILE EXCHANGE              Code-02365F
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       68,420
COMMITMENTS
  12,880    9,751    2,075   44,664   50,817   59,619   62,643    8,801    5,777

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:      1,090)
    -686       64     -146    1,736      986      904      904      186      186

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    18.8     14.3      3.0     65.3     74.3     87.1     91.6     12.9      8.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       29)
       3        3        3       19       21       24       25
 
 
NGPL TEXOK BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                 Code-02365G
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      107,483
COMMITMENTS
     374        0    3,345   92,222   95,307   95,941   98,652   11,542    8,831

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:     -2,011)
     374   -5,532    1,735   -5,332    1,473   -3,223   -2,324    1,212      313

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     0.3      0.0      3.1     85.8     88.7     89.3     91.8     10.7      8.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       34)
       1        0        1       24       24       25       25
 
 
SUMAS BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                      Code-02365J
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       40,268
COMMITMENTS
   3,669    1,171      870   27,830   32,370   32,369   34,411    7,899    5,857

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:          .)
       .        .        .        .        .        .        .        .        .

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     9.1      2.9      2.2     69.1     80.4     80.4     85.5     19.6     14.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       20)
       1        1        1       14       14       16       15
 
 
DOMINION BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                   Code-02365N
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       87,328
COMMITMENTS
   6,286        0    1,364   69,659   77,607   77,309   78,971   10,019    8,357

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:      1,712)
       0        0        0      796    2,080      796    2,080      916     -368

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     7.2      0.0      1.6     79.8     88.9     88.5     90.4     11.5      9.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       24)
       1        0        1       20       21       21       22
 
 
WAHA BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                       Code-02365O
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       68,498
COMMITMENTS
       0    7,262    2,098   57,461   48,023   59,559   57,383    8,939   11,115

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:      2,249)
       0      495       18    1,375    1,149    1,393    1,662      856      587

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     0.0     10.6      3.1     83.9     70.1     86.9     83.8     13.1     16.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       29)
       0        2        2       23       17       25       19
 
 
HENRY HUB INDEX SWAP - NEW YORK MERCANTILE EXCHANGE                  Code-023A09
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       57,372
COMMITMENTS
     496    9,784        0   56,140   47,340   56,636   57,124      736      248

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:          .)
       .        .        .        .        .        .        .        .        .

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     0.9     17.1      0.0     97.9     82.5     98.7     99.6      1.3      0.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       24)
       1        2        0       13       13       14       15
 
 
ALBERTA BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-035650
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      169,859
COMMITMENTS
     588   21,761    3,399  156,157  139,484  160,144  164,644    9,715    5,215

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:      3,465)
       0    3,804   -1,245    4,100      720    2,855    3,279      610      186

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     0.3     12.8      2.0     91.9     82.1     94.3     96.9      5.7      3.1

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       43)
       1        3        3       36       32       39       36
 
 
CHICAGO BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-035651
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       84,840
COMMITMENTS
   4,377        0    2,808   65,591   66,390   72,776   69,198   12,064   15,642

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:      2,314)
     857      -60     -654    2,262    3,028    2,465    2,314     -151        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     5.2      0.0      3.3     77.3     78.3     85.8     81.6     14.2     18.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       27)
       2        0        1       17       18       19       19
 
 
HENRY HUB BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                  Code-035652
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       81,318
COMMITMENTS
     496   13,596        0   76,896   65,740   77,392   79,336    3,926    1,982

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:     10,004)
       0    7,360        0   10,128    2,644   10,128   10,004     -124        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     0.6     16.7      0.0     94.6     80.8     95.2     97.6      4.8      2.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       26)
       1        2        0       16       14       17       16
 
 
HOUSTON SHIP CH BASIS SWAP - NEW YORK MERCANTILE EXCHANGE            Code-035653
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      235,915
COMMITMENTS
  13,966      482    2,325  211,911  225,639  228,202  228,446    7,713    7,469

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:     13,949)
       9        0      -64   13,103   13,557   13,048   13,493      901      456

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     5.9      0.2      1.0     89.8     95.6     96.7     96.8      3.3      3.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       48)
       4        1        4       37       39       42       44
 
 
NW PIPE ROCKIES BASIS SWAP - NEW YORK MERCANTILE EXCHANGE            Code-035654
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      152,729
COMMITMENTS
   6,606    3,681    9,228  128,609  131,704  144,443  144,613    8,286    8,116

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:     -1,033)
     296      922      151   -1,723   -2,293   -1,276   -1,220      243      187

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     4.3      2.4      6.0     84.2     86.2     94.6     94.7      5.4      5.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       43)
       2        4        5       34       30       39       36
 
 
PANHANDLE BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                  Code-035655
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      148,910
COMMITMENTS
       0   10,054    2,747  135,196  124,760  137,943  137,561   10,967   11,349

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:        216)
       0    4,677   -2,083      850   -4,163   -1,233   -1,569    1,449    1,785

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     0.0      6.8      1.8     90.8     83.8     92.6     92.4      7.4      7.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       41)
       0        3        2       33       32       35       35
 
 
SOCAL BASIS SWAP - NEW YORK MERCANTILE EXCHANGE                      Code-035657
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      192,954
COMMITMENTS
   9,096   32,863   22,597  156,349  131,322  188,042  186,782    4,912    6,172

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:      2,355)
   1,932    3,687     -333      161   -2,927    1,760      427      595    1,928

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     4.7     17.0     11.7     81.0     68.1     97.5     96.8      2.5      3.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       46)
       5        4        8       29       33       38       41
 
 
TRANSCO ZONE 6 BASIS SWAP - NEW YORK MERCANTILE EXCHANGE             Code-035658
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:       56,270
COMMITMENTS
       0        0        0   50,286   44,108   50,286   44,108    5,984   12,162

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:      1,140)
       0        0        0      344    1,016      344    1,016      796      124

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     0.0      0.0      0.0     89.4     78.4     89.4     78.4     10.6     21.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       20)
       0        0        0       14       15       14       15
 
 
HENRY HUB GAS SWAP - NEW YORK MERCANTILE EXCHANGE                    Code-03565B
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:    1,699,510
COMMITMENTS
 248,033   33,447  451,900  975,792  1201878  1675725  1687225   23,785   12,285

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:     42,478)
  -7,768   -5,547   15,518   29,014   30,164   36,764   40,135    5,714    2,343

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    14.6      2.0     26.6     57.4     70.7     98.6     99.3      1.4      0.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      142)
      26       16       39       96       81      139      121
 
 
HENRY HUB PENULTIMATE GAS SWAP - NEW YORK MERCANTILE EXCHANGE        Code-03565C
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2,500 MMBTU'S)                                      OPEN INTEREST:      436,121
COMMITMENTS
 103,791   13,464  100,591  226,914  317,658  431,296  431,713    4,825    4,408

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:     26,181)
  14,028   -3,999      565   10,756   28,399   25,349   24,965      832    1,216

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    23.8      3.1     23.1     52.0     72.8     98.9     99.0      1.1      1.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       60)
      16       10       21       31       31       55       54
 
 
PJM ELECTRICITY MONTHLY - NEW YORK MERCANTILE EXCHANGE               Code-064657
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(40 MEGAWATT HOURS PER PEAK DAY)                     OPEN INTEREST:       59,636
COMMITMENTS
   9,962    2,680    7,622   40,784   48,225   58,368   58,527    1,268    1,109

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:        -16)
  -1,240      -20      330       66   -1,028     -844     -718      828      702

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    16.7      4.5     12.8     68.4     80.9     97.9     98.1      2.1      1.9

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       53)
       5        4        8       42       39       50       48
 
 
NYISO ZONE A LBMP SWAP - NEW YORK MERCANTILE EXCHANGE                Code-06465A
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS 0F 400 MEGAWATT HOURS)                    OPEN INTEREST:       24,323
COMMITMENTS
   1,163    4,086      776   21,672   18,770   23,611   23,632      712      691

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:        408)
      11     -109       33      278      484      322      408       86        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     4.8     16.8      3.2     89.1     77.2     97.1     97.2      2.9      2.8

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       37)
       4        3        3       25       22       30       27
 
 
NYISO ZONE G LBMP SWAP - NEW YORK MERCANTILE EXCHANGE                Code-06465B
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS 0F 400 MEGAWATT HOURS)                    OPEN INTEREST:       15,281
COMMITMENTS
   2,614    1,024        0   12,532   14,257   15,146   15,281      135        0

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:        807)
       0       44        0      862      763      862      807      -55        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    17.1      6.7      0.0     82.0     93.3     99.1    100.0      0.9      0.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       31)
       2        4        0       18       18       20       22
 
 
NYISO ZONE J LBMP SWAP - NEW YORK MERCANTILE EXCHANGE                Code-06465C
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS 0F 400 MEGAWATT HOURS)                    OPEN INTEREST:       12,063
COMMITMENTS
   1,146    2,552        0   10,223    9,468   11,369   12,020      694       43

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:         86)
       0        0        0        0       86        0       86       86        0

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     9.5     21.2      0.0     84.7     78.5     94.2     99.6      5.8      0.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       20)
       1        2        0       11       11       12       13
 
 
ISO NEW ENGLAND LMP SWAP - NEW YORK MERCANTILE EXCHANGE              Code-06465H
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(40 MEGAWATT HOURS PER PEAK DAY)                     OPEN INTEREST:       25,720
COMMITMENTS
   3,820    4,714      302   19,972   19,298   24,094   24,314    1,626    1,406

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:        148)
     -20      -20        0      170      130      150      110       -2       38

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    14.9     18.3      1.2     77.7     75.0     93.7     94.5      6.3      5.5

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       29)
       2        3        3       21       20       25       24
 
 
PJM CAL MONTH OFF PK LMP SWAP - NEW YORK MERCANTILE EXCHANGE         Code-06465M
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2.5 MEGAWATTS PER OFF PEAK HRS)                     OPEN INTEREST:       25,574
COMMITMENTS
   4,890      160      580   19,237   24,648   24,707   25,388      867      186

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:        486)
     160        0      -40      494      678      614      638     -128     -152

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    19.1      0.6      2.3     75.2     96.4     96.6     99.3      3.4      0.7

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       36)
       2        2        3       28       27       31       31
 
 
ISO NEW ENG OFF PK LMP SWAP - NEW YORK MERCANTILE EXCHANGE           Code-06465S
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(2.5 MEGAWATTS PER OFF PEAK HRS)                     OPEN INTEREST:       13,408
COMMITMENTS
     540      248    1,132   10,436   11,368   12,108   12,748    1,300      660

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:         50)
       0        0      240     -250     -230      -10       10       60       40

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
     4.0      1.8      8.4     77.8     84.8     90.3     95.1      9.7      4.9

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       20)
       1        1        1       13       15       15       16
 
 
CRUDE OIL, LIGHT SWEET - NEW YORK MERCANTILE EXCHANGE                Code-067651
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 1,000 BARRELS)                         OPEN INTEREST:    1,002,719
COMMITMENTS
 183,102  116,353  196,340  557,424  616,604  936,866  929,297   65,853   73,422

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:     15,140)
  25,534  -12,966    5,062  -18,361   17,783   12,235    9,879    2,905    5,261

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    18.3     11.6     19.6     55.6     61.5     93.4     92.7      6.6      7.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      294)
      87       81      112       81      100      236      246
 
 
E-MINY CRUDE OIL, LIGHT SWEET - NEW YORK MERCANTILE EXCHANGE         Code-067655
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 500 BARRELS)                           OPEN INTEREST:       27,202
COMMITMENTS
  19,276   14,463      492      493    2,180   20,261   17,135    6,941   10,067

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:      3,604)
   3,010    1,686     -192        0    1,474    2,818    2,968      786      636

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    70.9     53.2      1.8      1.8      8.0     74.5     63.0     25.5     37.0

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       24)
      14        8        5        1        1       17       12
 
 
PALLADIUM - NEW YORK MERCANTILE EXCHANGE                             Code-075651
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 100 TROY OUNCES)                       OPEN INTEREST:       17,850
COMMITMENTS
  11,125    2,718    1,014    2,041   13,549   14,180   17,281    3,670      569

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:       -411)
    -253      100      -39     -263     -496     -555     -435      144       24

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    62.3     15.2      5.7     11.4     75.9     79.4     96.8     20.6      3.2

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      142)
      88        9        7       14       29      109       42
 
 
PLATINUM - NEW YORK MERCANTILE EXCHANGE                              Code-076651
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 50 TROY OUNCES)                        OPEN INTEREST:        9,559
COMMITMENTS
   5,176      959        0    1,729    7,330    6,905    8,289    2,654    1,270

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:        269)
     214     -100        0       28      332      242      232       27       37

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    54.1     10.0      0.0     18.1     76.7     72.2     86.7     27.8     13.3

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       64)
      30        6        0       13       21       43       27
 
 
UNLEADED GASOLINE, N.Y. HARBOR - NEW YORK MERCANTILE EXCHANGE        Code-111652
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 42,000 U.S. GALLONS)                   OPEN INTEREST:      129,593
COMMITMENTS
  28,198    9,024    9,751   73,353  100,959  111,302  119,734   18,291    9,859

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:      3,942)
   4,273     -643     -383   -1,105    4,654    2,785    3,628    1,157      314

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    21.8      7.0      7.5     56.6     77.9     85.9     92.4     14.1      7.6

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:      154)
      46       25       34       60       68      127      109
 
 
GASOLINE BLENDSTOCK (RBOB) - NEW YORK MERCANTILE EXCHANGE            Code-111659
FUTURES ONLY POSITIONS AS OF 04/18/06                         |
--------------------------------------------------------------| NONREPORTABLE
      NON-COMMERCIAL      |   COMMERCIAL    |      TOTAL      |   POSITIONS
--------------------------|-----------------|-----------------|-----------------
  LONG  | SHORT  |SPREADS |  LONG  | SHORT  |  LONG  | SHORT  |  LONG  | SHORT
--------------------------------------------------------------------------------
(CONTRACTS OF 42,000 U.S. GALLONS)                   OPEN INTEREST:       42,893
COMMITMENTS
   6,630       79    1,290   32,206   38,769   40,126   40,138    2,767    2,755

CHANGES FROM 04/11/06 (CHANGE IN OPEN INTEREST:      4,161)
     381     -185     -312    4,097    4,536    4,166    4,039       -5      122

PERCENT OF OPEN INTEREST FOR EACH CATEGORY OF TRADERS
    15.5      0.2      3.0     75.1     90.4     93.5     93.6      6.5      6.4

NUMBER OF TRADERS IN EACH CATEGORY (TOTAL TRADERS:       41)
       4        2        4       24       26       31       30
 

Updated April 21, 2006