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  • Portfolio sorts in STATA

    Good morning everyone,

    i am basically a beginner in STATA and need it for my master thesis. I would be so thankful for any help. I have annual data from the CRSP/Compustat Merged Database fundamentals annual and monthly data from the same database but monthly security.

    I now need to prepare my data and merge it m:1, , the goal is to achieve that to every monthly stock data from for exampe July 1988 to June 1989 the accounting annual data from 1988 will be assigned, to avoid look ahead bias. If this is achieved the next thing is to sort Portfolios by the likelyhood of employee stock options: the procedure according to my master thesis advisor should be: Portfolios are sorted once a year and then held for one year. This results in a return time series over 12 months. Then it is sorted again. And so on. So you have a portfolio that always contains, for example, the shares with the highest value of employee shares. So you would have several portfolios sorted on the variable of interest (employee shares).

    The returns of the portfolio need to be value weighted and equal weighted portfolio returns.

    So concluding, can someone help me with the code the described parts:

    - preparing and merging data as described (to avoid look ahead bias)
    - prepare data for portfolio sorts
    - portfolio sorts and value weighted and equal weighted returns


    i would appreciate any kind of help.

    Yours sincerly
    Stefan Maurer

    if it helps this is a over view of my variables

    annual accounting data
    Code:
    * Example generated by -dataex-. For more info, type help dataex
    clear
    input double(LPERMNO LPERMCO) long datadate double fyear str8 tic str70 conm double(act at csho ceq cshrso cshrt dcpstk epsfi epsfx epspi epspx esopct prcc_f prch_f prcl_f)
    25881 23369  4017 1970 "AE.2"   "A & E PLASTIK PAK INC"      21.351    33.45  2.446  10.544    .  .456       0   .17   .56   .17   .56 .          10       10.875             7.5
    25881 23369  4382 1971 "AE.2"   "A & E PLASTIK PAK INC"      19.688    29.33  2.995   8.381    .  .963       7  -.65   .04  -.65   .04 .        5.75       12.875           3.625
    25881 23369  4748 1972 "AE.2"   "A & E PLASTIK PAK INC"      11.326   19.907  2.902   7.021    . 1.066       7   .69    .5   .72    .5 .       5.125         8.75           4.625
    25881 23369  5113 1973 "AE.2"   "A & E PLASTIK PAK INC"      12.969   21.771   2.84   8.567    . 1.162       7   .62   .62   .64   .64 .        1.75          5.5           1.125
    25881 23369  5478 1974 "AE.2"   "A & E PLASTIK PAK INC"      19.473   25.638   2.15   9.843    . 1.178       7   .81   .59   .87    .6 .       2.125        3.375           1.875
    25881 23369  5843 1975 "AE.2"   "A & E PLASTIK PAK INC"      16.366   23.905  2.098   10.24    .  .916     2.5   .91   .91  1.02  1.02 .       4.375          4.5               2
    25881 23369  6209 1976 "AE.2"   "A & E PLASTIK PAK INC"      21.647   38.586  2.207  14.106    .  .824    2.25  1.38  1.38  1.47  1.47 .        5.75          8.5               4
    25881 23369  6574 1977 "AE.2"   "A & E PLASTIK PAK INC"      23.548   44.025  2.226  15.876    .  .505       0   .79   .79    .8    .8 .        9.25          9.5           5.625
    10015  6398  8765 1983 "AMFD."  "A & M FOOD SERVICES INC"     4.807    14.08  3.568   7.823    .  .345       0    .4    .4    .4    .4 .        7.25            8               6
    10015  6398  9131 1984 "AMFD."  "A & M FOOD SERVICES INC"     2.789   16.267  3.568   8.962 .445  .445       0   .32   .32   .32   .32 .        3.75         8.75             3.5
    10015  6398  9496 1985 "AMFD."  "A & M FOOD SERVICES INC"     3.852   39.495  3.988  13.014 .445  .445       0   .68   .68   .68   .68 .      10.125           11            3.75
    10023 22159  4748 1972 "AAIC.1" "AAI CORP"                   12.865   15.676   .877   8.591    .   .04       0  1.02  1.02     .  1.02 .         5.5          9.5             5.5
    10031  6672  8765 1983 "ANTQ"   "A.A. IMPORTING CO INC"       8.273    8.529  2.683   6.095    .    .1       0   .49   .49   .49   .49 .        5.25         5.25            5.25
    10031  6672  9131 1984 "ANTQ"   "A.A. IMPORTING CO INC"       7.817    8.241  2.683   6.482   .1    .1       0   .14   .14   .14   .14 .        2.75            6            2.25
    10031  6672  9527 1985 "ANTQ"   "A.A. IMPORTING CO INC"      12.458    13.99  2.683   6.665 .143  .143       0   .09   .09   .09   .09 .         4.5         5.25           2.875
    10031  6672  9892 1986 "ANTQ"   "A.A. IMPORTING CO INC"       13.09   14.586  2.683   7.458 .154  .154       0    .3    .3    .3    .3 .         4.5            5               4
    10031  6672 10257 1987 "ANTQ"   "A.A. IMPORTING CO INC"      14.199   16.042  2.683   7.643 .154  .154       0   .07   -.2   .07   -.2 .        2.75         5.25            2.75
    10031  6672 10623 1988 "ANTQ"   "A.A. IMPORTING CO INC"      14.656    16.28  2.683   -.194 .154  .454       0 -2.92 -2.92 -2.92 -2.92 .        1.75         3.75            1.75
    54594 20000  4534 1971 "AIR"    "AAR CORP"                    12.62   16.501  1.034   6.975    .  .071       0    .8    .8   .82   .82 . 32.99993761  36.74995001     11.49999192
    54594 20000  4899 1972 "AIR"    "AAR CORP"                    18.49   24.068  1.255  12.483    .  .044       0   1.3   1.3   1.3   1.3 . 14.24999179  34.24994912     12.49998785
    54594 20000  5264 1973 "AIR"    "AAR CORP"                   24.602   31.584  1.257  14.521    .  .291       3  1.67  1.67  1.67  1.67 .  10.3749882  18.62498228      8.87498877
    54594 20000  5629 1974 "AIR"    "AAR CORP"                   35.925   43.353  1.239  14.299    .   .29       3     .  1.34   .08  1.48 .  7.24999262  11.49998639      4.74999277
    54594 20000  5995 1975 "AIR"    "AAR CORP"                   35.507   43.539  1.224  15.782    .    .3       3  1.34  1.34   1.5   1.5 .    9.499989  10.49999046      6.24998563
    54594 20000  6360 1976 "AIR"    "AAR CORP"                   37.068    45.55  1.233  17.252    .  .312       3  1.29  1.29  1.46  1.46 .  10.8749917  14.49998524      8.99999103
    54594 20000  6725 1977 "AIR"    "AAR CORP"                   45.721   56.502  1.339  18.665    .   .32       3  1.32  1.32   1.5   1.5 . 10.62499266  11.24998927   6.24999540227
    54594 20000  7090 1978 "AIR"    "AAR CORP"                   50.103   64.194  1.684  21.084    .  .393       3  1.53  1.53  1.79  1.79 . 10.37499502 13.699990064     8.499994128
    54594 20000  7456 1979 "AIR"    "AAR CORP"                   52.722   73.758  2.357  25.682    .  .288    1.25  1.49  1.49  1.68  1.68 .  10.2499963  15.62499511     7.699994448
    54594 20000  7821 1980 "AIR"    "AAR CORP"                   59.334   83.075  2.566  29.721    .   .12       0  1.41  1.41  1.45  1.45 . 10.87499392  14.74999201      9.12499416
    54594 20000  8186 1981 "AIR"    "AAR CORP"                   73.908  113.653  3.942  42.423    .  .199       0   .33   .33   .33   .33 .  6.99999583  12.37499464      5.99999321
    54594 20000  8551 1982 "AIR"    "AAR CORP"                   69.656  111.288  3.932  43.225    .  .141       0    .7    .7   .71   .71 . 14.74999201  15.74999464      5.74999416
    54594 20000  8917 1983 "AIR"    "AAR CORP"                   92.526  137.228  6.007  81.085    .   .19       0   .96   .96   .97   .97 . 19.49999321  20.37499309     13.24999452
    54594 20000  9282 1984 "AIR"    "AAR CORP"                  102.454  155.405  6.036  87.385 .142  .196       0   1.5   1.5  1.51  1.51 . 18.74999285  23.49999404              16
    54594 20000  9647 1985 "AIR"    "AAR CORP"                  140.741  198.287  9.099  95.381 .342  .429       0  1.27  1.27  1.27  1.27 . 23.62499571  23.99999642 11.999994993333
    54594 20000 10012 1986 "AIR"    "AAR CORP"                   168.95  235.091 10.536  134.31 .302  .393       0   1.5   1.5   1.5   1.5 . 30.37497425  33.62498116     20.12499619
    54594 20000 10378 1987 "AIR"    "AAR CORP"                  208.395  284.948  15.87 150.497 .374   .51       0  1.34  1.34  1.34  1.34 . 25.12497711  25.99999237     13.99999809
    54594 20000 10743 1988 "AIR"    "AAR CORP"                  257.048  356.391 16.009  171.58 .638  .774       0  1.56  1.56  1.56  1.56 . 31.24999237  31.49997711     21.74999857
    54594 20000 11108 1989 "AIR"    "AAR CORP"                  275.576  388.521 16.082 189.548 .706  .815       0   1.6   1.6   1.6   1.6 0 21.24999762  37.49997711     20.24999857
    54594 20000 11473 1990 "AIR"    "AAR CORP"                  268.399  379.958 15.891 193.778 .833   .95       0   .93   .93   .93   .93 0 14.12499905  24.24998474      9.12499809
    54594 20000 11839 1991 "AIR"    "AAR CORP"                  289.537  395.351 15.899 196.737 .971 1.064       0   .63   .63   .63   .63 0 12.87499809  16.87499857     10.62499809
    54594 20000 12204 1992 "AIR"    "AAR CORP"                  265.036  365.151 15.901 189.216 .644 1.843       0   .02   .02   .02   .02 0 13.49999857  14.62499857     10.74999905
    54594 20000 12569 1993 "AIR"    "AAR CORP"                  307.723  417.626 15.906 189.488 .732 1.896       0    .6    .6    .6    .6 0 14.37499809  17.37499809     12.62499905
    54594 20000 12934 1994 "AIR"    "AAR CORP"                  321.632  425.814 15.961 197.119 .933 2.359       0   .66   .66   .66   .66 0 15.24999905  15.24999905     11.87499905
    54594 20000 13300 1995 "AIR"    "AAR CORP"                  338.012  437.846 15.998 204.635    .     .       0     1     1     1     1 0 22.12499857  23.74999809     14.87499905
    54594 20000 13665 1996 "AIR"    "AAR CORP"                    414.1  529.584 18.204 269.259    .     .       0  1.38  1.38  1.38  1.38 0 30.99998474  31.99999237     17.74999809
    54594 20000 14030 1997 "AIR"    "AAR CORP"                    468.4  670.559 27.704  300.85    .     .       0  1.27  1.27  1.29  1.29 0     26.4375  32.41699219     20.49998474
    54594 20000 14395 1998 "AIR"    "AAR CORP"                  508.186   726.63 27.381 326.035    .     .       0  1.49  1.49  1.51  1.51 0       19.75        30.25          14.625
    54594 20000 14761 1999 "AIR"    "AAR CORP"                  511.267  740.998 26.865 339.515    .     .       0  1.28  1.28   1.3   1.3 0      13.875         28.5          13.625
    54594 20000 15126 2000 "AIR"    "AAR CORP"                  485.856  701.854 26.937 340.212    .     .       0   .69   .69   .69   .69 0          14         15.7            9.75
    54594 20000 15491 2001 "AIR"    "AAR CORP"                  436.656  710.199  31.87 310.235    .     .       0 -2.08 -2.08 -2.08 -2.08 0       11.44        17.45            6.96
    54594 20000 15856 2002 "AIR"    "AAR CORP"                  396.412  686.621 31.851 294.988    .     .       0  -.39  -.39  -.39  -.39 0         4.5        11.44            2.92
    54594 20000 16222 2003 "AIR"    "AAR CORP"                  432.204  709.292 32.245 301.684    .     .      75   .11   .11   .11   .11 0        9.58        16.87            4.59
    54594 20000 16587 2004 "AIR"    "AAR CORP"                  474.542   732.23 32.586 314.744    .     .      67   .46   .55   .48   .58 0       16.04        16.13            8.86
    54594 20000 16952 2005 "AIR"    "AAR CORP"                  624.454  978.819 36.654 422.717    .     . 166.355   .94   .94  1.05  1.05 0       24.08        29.32            14.8
    54594 20000 17317 2006 "AIR"    "AAR CORP"                  645.721 1067.633 37.729 494.243    .     . 166.355   1.4  1.42  1.61  1.63 0        32.5        33.75            19.4
    54594 20000 17683 2007 "AIR"    "AAR CORP"                  783.431  1362.01 38.773 585.255    .     .     400  1.76  1.77  2.02  2.04 0       19.28        39.42           18.75
    54594 20000 18048 2008 "AIR"    "AAR CORP"                  851.312 1377.511 38.884 656.895    .     .  289.49  1.87  1.92  2.07  2.12 0        14.7        19.84            9.69
    54594 20000 18413 2009 "AIR"    "AAR CORP"                  863.429 1501.042 39.484 746.906    .     . 224.437  1.16  1.16  1.17  1.17 0        19.7        26.08           14.31
    54594 20000 18778 2010 "AIR"    "AAR CORP"                  913.985 1703.727 39.781 835.845    .     . 232.147  1.73  1.81  1.76  1.85 0       26.39        29.05           14.91
    54594 20000 19144 2011 "AIR"    "AAR CORP"                 1063.272 2195.653 40.273 864.649    .     . 209.525  1.65  1.65  1.68  1.68 0       12.05        31.66           12.02
    54594 20000 19509 2012 "AIR"    "AAR CORP"                   1033.7   2136.9 39.382   918.6    .     .   138.8  1.38  1.38  1.38  1.38 0       20.06        20.87              10
    54594 20000 19874 2013 "AIR"    "AAR CORP"                   1116.9   2199.5  39.56   999.5    .     .    75.5  1.83  1.83  1.85  1.85 0        24.3        31.55           19.98
    54594 20000 20239 2014 "AIR"    "AAR CORP"                    954.1     1515 35.423   845.1    .     .      48   .24  -1.4   .26  -1.4 0       29.54        34.24           22.37
    54594 20000 20605 2015 "AIR"    "AAR CORP"                    873.1   1442.1 34.515   865.8    .     .       0  1.37  1.16  1.37  1.16 0       24.41        32.87           18.36
    54594 20000 20970 2016 "AIR"    "AAR CORP"                    888.5   1504.1 34.354   914.2    .     .       0  1.64  1.45  1.66  1.47 0       34.94        38.75           21.78
    54594 20000 21335 2017 "AIR"    "AAR CORP"                    942.7   1524.7 34.716   936.3    .     .       0   .41  2.11   .44  2.14 0       44.69        47.97           33.92
    54594 20000 21700 2018 "AIR"    "AAR CORP"                    952.5   1517.2 34.788   905.9    .     .       0   .21   2.4    .2  2.42 0       30.09        51.52           29.84
    54594 20000 22066 2019 "AIR"    "AAR CORP"                   1438.7     2079 35.097   902.6    .     .       0   .13   .71   .12   .71 0       20.17        52.78            8.56
    54594 20000 22431 2020 "AIR"    "AAR CORP"                      937   1539.7 35.375   974.4    .     .       0     1   1.3  1.01  1.31 0       41.75        45.49           16.53
    54594 20000 22796 2021 "AIR"    "AAR CORP"                   1007.2   1573.9 35.391  1034.5    .     .       0  2.17  2.16   2.2  2.19 0       48.22           52            30.9
    61903    11  5052 1973 "ABA.2"  "A.B.A. INDUSTRIES INC"           .        .      .       .    .     .       .     .     .     .     . .  1.99999958   4.49999571      1.99999958
    61903    11  5417 1974 "ABA.2"  "A.B.A. INDUSTRIES INC"       2.049    3.269   .292   1.942    .  .001       0  -.06  -.06  -.06  -.06 .  2.49999966   3.49999666      1.62499957
    61903    11  5782 1975 "ABA.2"  "A.B.A. INDUSTRIES INC"       2.916    4.266   .287   2.183    .     0       0  1.01  1.01  1.01  1.01 .  4.74999845   4.99999523      1.49999969
    61903    11  6148 1976 "ABA.2"  "A.B.A. INDUSTRIES INC"       3.269    4.705   .286    2.54    .     0       0  1.35  1.35  1.35  1.35 .  5.24999797   5.49999774      3.99999619
    61903    11  6513 1977 "ABA.2"  "A.B.A. INDUSTRIES INC"        3.29    4.843   .286   2.744    .     0       0   .81     1   .81     1 .  4.99999523   6.24999702      4.74999845
    61903    11  6878 1978 "ABA.2"  "A.B.A. INDUSTRIES INC"        4.82    7.164   .285   2.935    .     0       0    .7    .7    .7    .7 .  5.99999726   6.49999678      4.74999845
    61903    11  7243 1979 "ABA.2"  "A.B.A. INDUSTRIES INC"       6.241    9.251   .295   3.509    .     0       0  1.59  1.59  1.59  1.59 .  8.49999785   8.74999464      5.12499511
    61903    11  7609 1980 "ABA.2"  "A.B.A. INDUSTRIES INC"      10.275   15.504   .896   6.874    .  .075       0  1.29  1.29  1.29  1.29 . 16.12499654  18.24999601     3.999999165
    61903    11  7974 1981 "ABA.2"  "A.B.A. INDUSTRIES INC"      17.223    24.48  1.139   8.602    .  .098       0  1.29  1.29  1.29  1.29 . 11.74999833  22.79996872      9.12499905
    10058    20  5386 1974 "4135B"  "ABKCO INDUSTRIES INC"        7.507   14.358   1.47   4.727    .   .11       0  -.32  -.32  -.32  -.32 .           .            .               .
    10058    20  5751 1975 "4135B"  "ABKCO INDUSTRIES INC"        6.393   11.898  1.442   4.718    .  .132       0   .03   .03   .03   .03 .           .            .               .
    10058    20  6117 1976 "4135B"  "ABKCO INDUSTRIES INC"        5.366   11.223  1.438   4.082    .  .089       0  -.44  -.44  -.44  -.44 .           .            .               .
    10058    20  6482 1977 "4135B"  "ABKCO INDUSTRIES INC"       10.313   12.094  1.385   3.552    .  .132       0  -.33  -.33  -.33  -.33 .           .            .               .
    10058    20  6847 1978 "4135B"  "ABKCO INDUSTRIES INC"        6.166    9.042  1.382    3.58    .  .132       0   .03   .03   .03   .03 .           .            .               .
    10058    20  7212 1979 "4135B"  "ABKCO INDUSTRIES INC"        4.973    7.554  1.251   3.155    .     0       0  -.07  -.07  -.07  -.07 .        1.75            2            1.25
    10058    20  7578 1980 "4135B"  "ABKCO INDUSTRIES INC"        5.296    7.199  1.164   2.973    .     0       0   .02   .02   .02   .02 .        1.75            2             1.5
    10058    20  7943 1981 "4135B"  "ABKCO INDUSTRIES INC"        3.091    5.271  1.138   1.891    .     0       0   -.9   -.9   -.9   -.9 .         .75         1.75             .75
    10058    20  8308 1982 "4135B"  "ABKCO INDUSTRIES INC"        2.832    4.877   1.13   1.896    .     0       0   .25   .11   .25   .11 .          .5          .75              .5
    10058    20  8673 1983 "4135B"  "ABKCO INDUSTRIES INC"        2.075    3.974  1.121    .833    .     0       0  -.94  -.93  -.94  -.93 .          .5           .5              .5
    10066  6331  8917 1983 "ABMC."  "ABM COMPUTER SYSTEMS INC"    1.267     1.54  2.459    .778    .  .431       0  -.46  -.46  -.46  -.46 .       2.125        2.375           1.125
    10066  6331  9282 1984 "ABMC."  "ABM COMPUTER SYSTEMS INC"      .75     .973  3.234    .384   .4    .4       0  -.22  -.22  -.22  -.22 .   .53099996         2.75              .5
    10066  6331  9647 1985 "ABMC."  "ABM COMPUTER SYSTEMS INC"     .821     .965  11.41    .636 .362  .362       0  -.14  -.14  -.14  -.14 .       1.375   2.68699932            .375
    10074  5271  8339 1982 "ABSI.1" "ABS INDUSTRIES INC"          9.282   25.689   .876    .385    .    .1       0 -7.23 -7.09 -7.23 -7.09 .  2.49999619   4.99998665      2.49999619
    10074  5271  8704 1983 "ABSI.1" "ABS INDUSTRIES INC"          4.049     8.08   .876  -2.615    .  .094       0  -3.4  1.41  -3.4  1.41 .  4.99998665   6.49998665       .99999833
    10074  5271  9070 1984 "ABSI.1" "ABS INDUSTRIES INC"          4.076    8.869   .876   -.541 .091  .091       0  2.52  1.53  2.52  1.53 .   5.4999876   6.74998283      4.49998856
    10074  5271  9435 1985 "ABSI.1" "ABS INDUSTRIES INC"          3.139   10.549   .876    2.12 .088  .088       0  3.32  1.91  3.33  1.92 . 11.49997902  13.49997711      4.99998665
    10074  5271  9800 1986 "ABSI.1" "ABS INDUSTRIES INC"          3.396    14.16   .862   2.835    .     .       0  2.79  1.83   2.8  1.84 .  17.4999733  22.74996758     11.24997711
    10074  5271 10165 1987 "ABSI.1" "ABS INDUSTRIES INC"          3.982   17.344   .842   2.947    0     0       0  1.37     1  1.37     1 . 11.99997711   19.9999752     11.99997711
    10074  5271 10531 1988 "ABSI.1" "ABS INDUSTRIES INC"          6.692   16.217   .842   3.779    0     0       0  1.79   1.5  1.79   1.5 . 13.99998093   15.9999733      9.49998093
    10074  5271 10896 1989 "ABSI.1" "ABS INDUSTRIES INC"          7.555   26.089  2.526   4.935    0     0       0   .78   .52   .78   .52 0  6.99999809   8.99999809      4.66666031
    10074  5271 11261 1990 "ABSI.1" "ABS INDUSTRIES INC"         10.047   32.335  2.526   6.262    0     0       0   .85   .57   .85   .57 0  5.99999809   8.49999809      5.74999809
    end
    format %td datadate
    monthly stock data

    Code:
    * Example generated by -dataex-. For more info, type help dataex
    clear
    input str6 GVKEY str2 LINKPRIM str4 LIID str2 LINKTYPE double(LPERMNO LPERMCO) long(LINKDT LINKENDDT) str4 iid long datadate str8 tic str70 conm double(dvrate navm prccm prchm prclm trfm trt1m cshoq) long ccmbegdt
    "013007" "P" "01" "LU" 10000 7952 9503 10042 "01"  9527 "OMFGA" "OPTIMUM MANUFACTURING  -CL A"         . .       4.25      4.375      2.375                  1                   .  3.68  9163
    "013007" "P" "01" "LU" 10000 7952 9503 10042 "01"  9555 "OMFGA" "OPTIMUM MANUFACTURING  -CL A"         . .      3.125       4.25      3.125                  1 -26.470588235294112     .  9191
    "013007" "P" "01" "LU" 10000 7952 9503 10042 "01"  9586 "OMFGA" "OPTIMUM MANUFACTURING  -CL A"         . .      4.375      4.375      3.125                  1   39.99999999999999     .  9222
    "013007" "P" "01" "LU" 10000 7952 9503 10042 "01"  9616 "OMFGA" "OPTIMUM MANUFACTURING  -CL A"         . .      3.875       4.25      3.875                  1 -11.428571428571432 3.793  9252
    "013007" "P" "01" "LU" 10000 7952 9503 10042 "01"  9647 "OMFGA" "OPTIMUM MANUFACTURING  -CL A"         . . 3.06199932 4.06199932          3                  1  -20.98066270967742     .  9283
    "013007" "P" "01" "LU" 10000 7952 9503 10042 "01"  9677 "OMFGA" "OPTIMUM MANUFACTURING  -CL A"         . . 3.06199932      3.125 2.81199932                  1                   0     .  9313
    "013007" "P" "01" "LU" 10000 7952 9503 10042 "01"  9708 "OMFGA" "OPTIMUM MANUFACTURING  -CL A"         . . 2.81199932      3.375 2.53099918                  1   -8.16460011493405 3.793  9344
    "013007" "P" "01" "LU" 10000 7952 9503 10042 "01"  9739 "OMFGA" "OPTIMUM MANUFACTURING  -CL A"         . . 1.06199932        2.5          1                  1  -62.23330096680109     .  9375
    "013007" "P" "01" "LU" 10000 7952 9503 10042 "01"  9769 "OMFGA" "OPTIMUM MANUFACTURING  -CL A"         . .          1       1.25  .93699998                  1  -5.837981139196957     .  9405
    "013007" "P" "01" "LU" 10000 7952 9503 10042 "01"  9800 "OMFGA" "OPTIMUM MANUFACTURING  -CL A"         . .        .75          1  .68699998                  1                 -25 3.843  9436
    "013007" "P" "01" "LU" 10000 7952 9503 10042 "01"  9830 "OMFGA" "OPTIMUM MANUFACTURING  -CL A"         . .  .78099996  .81199998  .68699998                  1   4.133328000000014     .  9466
    "013007" "P" "01" "LU" 10000 7952 9503 10042 "01"  9861 "OMFGA" "OPTIMUM MANUFACTURING  -CL A"         . .  .46899998  .78099996  .43699998                  1  -39.94878309596841     .  9497
    "013007" "P" "01" "LU" 10000 7952 9503 10042 "01"  9892 "OMFGA" "OPTIMUM MANUFACTURING  -CL A"         . .       .375  .46899998       .375                  1  -20.04264051354544     .  9528
    "013007" "P" "01" "LU" 10000 7952 9503 10042 "01"  9920 "OMFGA" "OPTIMUM MANUFACTURING  -CL A"         . .       .375       .375       .375                  1                   0     .  9556
    "013007" "P" "01" "LU" 10000 7952 9503 10042 "01"  9951 "OMFGA" "OPTIMUM MANUFACTURING  -CL A"         . .  .21899998       .375  .21899998                  1 -41.600005333333336     .  9587
    "013007" "P" "01" "LU" 10000 7952 9503 10042 "01"  9981 "OMFGA" "OPTIMUM MANUFACTURING  -CL A"         . .  .21899998  .21899998  .18699998                  1                   0 3.893  9617
    "013007" "P" "01" "LU" 10000 7952 9503 10042 "01" 10012 "OMFGA" "OPTIMUM MANUFACTURING  -CL A"         . .  .18699998  .21899998  .18699998                  1 -14.611873480536385     .  9648
    "013007" "P" "01" "LU" 10000 7952 9503 10042 "01" 10042 "OMFGA" "OPTIMUM MANUFACTURING  -CL A"         . .  .18699998  .18699998  .18699998                  1                   0     .  9678
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01"  9527 "EGAS"  "GAS NATURAL INC"                      . .          6       6.25      5.625                  1                   .     .  9163
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01"  9555 "EGAS"  "GAS NATURAL INC"                      . .      6.125       6.25          6                  1   2.083333333333326     .  9191
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01"  9586 "EGAS"  "GAS NATURAL INC"                    .38 .       6.25       6.25      6.125       1.0151999952  3.5918362448979613  .985  9222
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01"  9616 "EGAS"  "GAS NATURAL INC"                    .38 .       6.25       6.25       6.25       1.0151999952                   0     .  9252
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01"  9647 "EGAS"  "GAS NATURAL INC"                    .38 .       6.25       6.25       6.25       1.0151999952                   0     .  9283
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01"  9677 "EGAS"  "GAS NATURAL INC"              .41999996 .          6       6.25          6     1.032965988348 -2.3200006399999973  .985  9313
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01"  9708 "EGAS"  "GAS NATURAL INC"              .41999996 .      5.875          6      5.625     1.032965988348  -2.083333333333337     .  9344
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01"  9739 "EGAS"  "GAS NATURAL INC"              .41999996 .      6.375      6.375      5.875     1.032965988348   8.510638297872353     .  9375
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01"  9769 "EGAS"  "GAS NATURAL INC"              .41999996 .      6.375          7       6.25 1.0499795393217883  1.6470581960784436  .991  9405
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01"  9800 "EGAS"  "GAS NATURAL INC"              .41999996 .      6.625          7      6.375   1.04997953932179  3.9215686274509887     .  9436
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01"  9830 "EGAS"  "GAS NATURAL INC"              .41999996 .          7          7        6.5   1.04997953932179   5.660377358490565     .  9466
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01"  9861 "EGAS"  "GAS NATURAL INC"              .41999996 .          7          7        6.5 1.0657292264117337  1.4999994285714413  .991  9497
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01"  9892 "EGAS"  "GAS NATURAL INC"              .41999996 .       6.75          7      6.375   1.06572922641173  -3.571428571428581     .  9528
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01"  9920 "EGAS"  "GAS NATURAL INC"              .41999996 .       6.25       6.75      5.875   1.06572922641173  -7.407407407407396     .  9556
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01"  9951 "EGAS"  "GAS NATURAL INC"              .41999996 .      6.375      6.375      5.875 1.0832824069833475   3.679999359999986  .991  9587
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01"  9981 "EGAS"  "GAS NATURAL INC"              .41999996 .      5.875      6.375      5.875   1.08328240698335  -7.843137254901955     .  9617
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10012 "EGAS"  "GAS NATURAL INC"              .41999996 .      5.875       6.25        5.5   1.08328240698335                   0     .  9648
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10042 "EGAS"  "GAS NATURAL INC"              .41999996 .      5.875          6        5.5 1.1026431915624062   1.787233361702123  .991  9678
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10073 "EGAS"  "GAS NATURAL INC"              .41999996 .          6       6.25        5.5   1.10264319156241  2.1276595744680993     .  9709
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10104 "EGAS"  "GAS NATURAL INC"              .41999996 .        6.5        6.5          6   1.10264319156241   8.333333333333325     .  9740
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10134 "EGAS"  "GAS NATURAL INC"              .41999996 .       6.25        6.5          6 1.1211675901237421  -2.230769846153835  .992  9770
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10165 "EGAS"  "GAS NATURAL INC"              .41999996 .      6.375        6.5      5.875 1.1211675901237401  2.0000000000000018     .  9801
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10195 "EGAS"  "GAS NATURAL INC"              .41999996 .       6.25      6.375      5.875 1.1211675901237401 -1.9607843137254832     .  9831
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10226 "EGAS"  "GAS NATURAL INC"              .41999996 .      5.875      6.375      5.875 1.1412054713350235  -4.320000639999999  .992  9862
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10257 "EGAS"  "GAS NATURAL INC"              .41999996 .       6.25        6.5      5.875   1.14120547133502   6.382978723404276     .  9893
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10286 "EGAS"  "GAS NATURAL INC"              .41999996 .       6.75       6.75       6.25   1.14120547133502   7.999999999999985     .  9921
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10317 "EGAS"  "GAS NATURAL INC"              .43999994 .      6.125       6.75      6.125 1.1617005806879308  -7.629630370370366  .992  9952
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10347 "EGAS"  "GAS NATURAL INC"              .43999994 .      6.125      6.625      6.125   1.16170058068793                   0     .  9982
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10378 "EGAS"  "GAS NATURAL INC"              .43999994 .      6.625      6.625      6.125   1.16170058068793   8.163265306122458     . 10013
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10408 "EGAS"  "GAS NATURAL INC"              .43999994 .       6.25       6.75       6.25 1.1821465016144328  -4.000000754716981  .992 10043
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10439 "EGAS"  "GAS NATURAL INC"              .43999994 .       6.25       6.75       6.25   1.18214650161443                   0     . 10074
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10470 "EGAS"  "GAS NATURAL INC"              .43999994 .      6.625      6.625       6.25   1.18214650161443   6.000000000000005     . 10105
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10500 "EGAS"  "GAS NATURAL INC"              .43999994 .      6.625      6.625      6.125 1.2017745855495638  1.6603766037735834  .998 10135
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10531 "EGAS"  "GAS NATURAL INC"              .43999994 .      6.625      6.625      6.125 1.2017745855495598                   0     . 10166
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10561 "EGAS"  "GAS NATURAL INC"              .43999994 .      6.625      6.625      6.125 1.2017745855495598                   0     . 10196
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10592 "EGAS"  "GAS NATURAL INC"              .43999994 .      6.375      6.625      6.125 1.2225110787764968  -2.113208301886793  .998 10227
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10623 "EGAS"  "GAS NATURAL INC"              .43999994 .        6.5        6.5      6.125    1.2225110787765  1.9607843137254832     . 10258
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10651 "EGAS"  "GAS NATURAL INC"              .43999994 .       6.75       6.75       6.25    1.2225110787765  3.8461538461538547     . 10287
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10682 "EGAS"  "GAS NATURAL INC"               .4799999 .       6.75          7       6.25 1.2442446000102223  1.7777770370370538  .998 10318
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10712 "EGAS"  "GAS NATURAL INC"               .4799999 .       7.25        7.5       6.75 1.2442446000102199   7.407407407407396     . 10348
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10743 "EGAS"  "GAS NATURAL INC"               .4799999 .          7        7.5          7 1.2442446000102199   -3.44827586206895     . 10379
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10773 "EGAS"  "GAS NATURAL INC"               .4799999 .          7       7.25          7  1.265574498551505  1.7142849999999932 1.001 10409
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10804 "EGAS"  "GAS NATURAL INC"               .4799999 .       7.25        7.5          7    1.2655744985515  3.5714285714285587     . 10440
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10835 "EGAS"  "GAS NATURAL INC"               .4799999 .       9.25       9.25       7.25    1.2655744985515  27.586206896551737     . 10471
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10865 "EGAS"  "GAS NATURAL INC"                     .5 .      8.875       9.25       8.75 1.2833994914888451 -2.7027027027027084 1.019 10501
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10896 "EGAS"  "GAS NATURAL INC"                     .5 .        9.5        9.5      8.625   1.28339949148885   7.042253521126751     . 10532
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10926 "EGAS"  "GAS NATURAL INC"                     .5 .      9.875      10.25       9.25   1.28339949148885  3.9473684210526327     . 10562
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10957 "EGAS"  "GAS NATURAL INC"                     .5 .     10.125      10.25      9.875  1.299243929655379     3.7974683544304 1.022 10593
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 10988 "EGAS"  "GAS NATURAL INC"                     .5 .      9.875     10.125      9.875   1.29924392965538 -2.4691358024691468     . 10624
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11016 "EGAS"  "GAS NATURAL INC"                     .5 .         10         10       9.75   1.29924392965538  1.2658227848101333     . 10652
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11047 "EGAS"  "GAS NATURAL INC"                     .5 .     10.125     10.125       9.75  1.315283978169644   2.499999999999991 1.027 10683
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11077 "EGAS"  "GAS NATURAL INC"                     .5 .         10         10       9.75   1.31528397816964 -1.2345679012345623     . 10713
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11108 "EGAS"  "GAS NATURAL INC"                     .5 .       9.75         10       9.75   1.31528397816964  -2.500000000000002     . 10744
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11138 "EGAS"  "GAS NATURAL INC"              .54999995 .       9.75      10.25       9.75 1.3338328453417883  1.4102556923076826 1.031 10774
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11169 "EGAS"  "GAS NATURAL INC"              .54999995 .      10.25      10.25      9.875 1.3338328453417898   5.128205128205132     . 10805
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11200 "EGAS"  "GAS NATURAL INC"              .54999995 .        9.5      10.25        9.5 1.3338328453417898  -7.317073170731703     . 10836
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11230 "EGAS"  "GAS NATURAL INC"              .54999995 .       9.75      9.875        9.5  1.352643298969092    4.07894663157895 1.049 10866
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11261 "EGAS"  "GAS NATURAL INC"              .54999995 .        9.5       9.75        9.5   1.35264329896909 -2.5641025641025883     . 10897
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11291 "EGAS"  "GAS NATURAL INC"              .54999995 .      9.625       9.75       9.25   1.35264329896909  1.3157894736842257     . 10927
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11322 "EGAS"  "GAS NATURAL INC"              .54999995 .        9.5       9.75       9.25 1.3722210209610077  .12986940259740454 1.054 10958
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11353 "EGAS"  "GAS NATURAL INC"              .54999995 .      9.625       9.75       9.25   1.37222102096101  1.3157894736842035     . 10989
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11381 "EGAS"  "GAS NATURAL INC"              .54999995 .       9.75         10       9.25   1.37222102096101   1.298701298701288     . 11017
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11412 "EGAS"  "GAS NATURAL INC"              .54999995 .        9.5         10        9.5 1.3920821045743434 -1.1538468717948613 1.054 11048
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11442 "EGAS"  "GAS NATURAL INC"              .54999995 .         10         10       9.75 1.3920821045743401  5.2631578947368585     . 11078
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11473 "EGAS"  "GAS NATURAL INC"              .54999995 .         10         10       9.75 1.3920821045743401                   0     . 11109
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11503 "EGAS"  "GAS NATURAL INC"               .5999999 .       10.5       10.5       9.75   1.41196898913096   6.499999799999978 1.073 11139
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11534 "EGAS"  "GAS NATURAL INC"               .5999999 .     10.125       10.5         10   1.41196898913096  -3.571428571428581     . 11170
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11565 "EGAS"  "GAS NATURAL INC"               .5999999 .       11.5         12     10.125   1.41196898913096  13.580246913580263     . 11201
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11595 "EGAS"  "GAS NATURAL INC"               .5999999 .       11.5         12       11.5 1.4303859734901134  1.3043476521739095 1.075 11231
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11626 "EGAS"  "GAS NATURAL INC"               .5999999 .         13         13       11.5   1.43038597349011  13.043478260869556     . 11262
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11656 "EGAS"  "GAS NATURAL INC"               .5999999 .      14.75         15      12.25   1.43038597349011  13.461538461538458     . 11292
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11687 "EGAS"  "GAS NATURAL INC"               .5999999 .       14.5      15.25      14.25 1.4451830677946478  -.6779662372881523 1.075 11323
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11718 "EGAS"  "GAS NATURAL INC"               .5999999 .      13.75      15.25      13.75   1.44518306779465 -5.1724137931034475     . 11354
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11747 "EGAS"  "GAS NATURAL INC"               .5999999 .         11       14.5         11   1.44518306779465 -20.000000000000007     . 11382
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11778 "EGAS"  "GAS NATURAL INC"               .5999999 .      11.75      12.25         11 1.4636322108810786   8.181817999999996 1.075 11413
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11808 "EGAS"  "GAS NATURAL INC"               .5999999 .       11.5         12       11.5   1.46363221088108  -2.127659574468077     . 11443
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11839 "EGAS"  "GAS NATURAL INC"               .5999999 .      11.75      12.25       11.5   1.46363221088108  2.1739130434782483     . 11474
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11869 "EGAS"  "GAS NATURAL INC"                    .63 .      11.75       12.5      11.75 1.4832510995182604  1.3404247659574375 1.075 11504
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11900 "EGAS"  "GAS NATURAL INC"                    .63 .       12.5       12.5      11.75 1.4832510995182602   6.382978723404276     . 11535
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11931 "EGAS"  "GAS NATURAL INC"                    .63 .         13         13      11.75 1.4832510995182602  3.9999999999999813     . 11566
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11961 "EGAS"  "GAS NATURAL INC"                    .63 .         15      15.25       12.5 1.4988252271636953   16.59615315384615 1.076 11596
    "012994" "P" "01" "LC" 10001 7953 9505 21062 "01" 11992 "EGAS"  "GAS NATURAL INC"                    .63 .         15         15      14.25 1.4988252271637001                   0     . 11627
    end
    format %td LINKDT
    format %td LINKENDDT
    format %td datadate
    format %td ccmbegdt
    Last edited by Stefan Maurer; 13 Jun 2023, 00:31.

  • #2
    Welcome to Statalist, Stefan!

    Please of through the forum FAQ on how to most effectively post questions. In particular see #12 on how to use CODE delimiters to better format output, and most importantly, how to use the dataex command to provide actual data examples, which are far more useful than just the output of the describe command, which is what I think you have used.

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    • #3
      You are asking for code for much if not most of an entire project. That may be optimistic and possibly even inappropriate, depending on expectations of your thesis.

      But following your being grateful for any kind of help, I advise that you need a monthly date variable to be calculated from your daily date variable.

      As it happens, a concurrent thread pivots on this point. See https://www.statalist.org/forums/for...encies-of-date

      NB an easy comment is that it's Stata, not STATA. Please read through all of the FAQ Advice.

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