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  • Equal Weights

    Hi All,

    I have daily returns data, and I want to generate equal weights on daily and monthly basis for all the companies in my dataset. Can someone please help me with the codes?

    dataex-

    Code:
    * Example generated by -dataex-. For more info, type help dataex
    clear
    input long co_code str66 company_name str10 co_stkdate double bse_firm_level_returns byte date2 float month int cal_year float(f_year ddate)
     80248 "GEEKAY EXIM (INDIA) LTD."                  "02-04-1996"  .98 2 4 1996 1997 13241
    148438 "MOLD-TEK TECHNOLOGIES LTD."                "02-04-1996" 1.06 2 4 1996 1997 13241
    122196 "KONARK SYNTHETIC LTD."                     "02-04-1996"    1 2 4 1996 1997 13241
     23287 "ASSAMBROOK LTD."                           "02-04-1996" 1.06 2 4 1996 1997 13241
      8909 "AJANTA SOYA LTD."                          "02-04-1996"  .96 2 4 1996 1997 13241
    115789 "KANAN STEELS LTD."                         "02-04-1996" 1.08 2 4 1996 1997 13241
     98659 "INDIAN ALUMINIUM CO. LTD. [MERGED]"        "02-04-1996" 1.04 2 4 1996 1997 13241
    246345 "T R F LTD."                                "02-04-1996"    1 2 4 1996 1997 13241
    171629 "UNIPLY DECOR LTD."                         "02-04-1996" 1.14 2 4 1996 1997 13241
    269457 "VITARA CHEMICALS LTD."                     "02-04-1996" 1.06 2 4 1996 1997 13241
    241564 "SUPER TANNERY LTD."                        "02-04-1996"    1 2 4 1996 1997 13241
    265154 "VIBROS ORGANICS LTD."                      "02-04-1996" 1.05 2 4 1996 1997 13241
     98548 "INDIA POLYSPIN LTD."                       "02-04-1996"  .94 2 4 1996 1997 13241
     98171 "I F L PROMOTERS LTD."                      "02-04-1996"    1 2 4 1996 1997 13241
     73013 "FILATEX INDIA LTD."                        "02-04-1996"  1.1 2 4 1996 1997 13241
    126871 "SRIKALAHASTHI PIPES LTD."                  "02-04-1996"  1.1 2 4 1996 1997 13241
    271442 "WELLMAN INCANDESCENT INDIA LTD."           "02-04-1996"    1 2 4 1996 1997 13241
     82775 "GOA FRUIT SPECIALITIES LTD."               "02-04-1996"  .89 2 4 1996 1997 13241
    181142 "PRESIDENCY SHOE INTERNATIONAL LTD."        "02-04-1996"  1.2 2 4 1996 1997 13241
    139221 "INDIA HOME LOAN LTD."                      "02-04-1996" 1.01 2 4 1996 1997 13241
    131746 "M K SECURITIES LTD."                       "02-04-1996" 1.07 2 4 1996 1997 13241
     60085 "DHARANI FINANCE LTD."                      "02-04-1996"  .86 2 4 1996 1997 13241
    183335 "PRUDENTIAL STOCK BROKING SERVICES LTD."    "02-04-1996"  .94 2 4 1996 1997 13241
    206862 "SAFEPACK POLYMERS LTD."                    "02-04-1996"    1 2 4 1996 1997 13241
    146415 "MINAXI TEXTILES LTD."                      "02-04-1996"    1 2 4 1996 1997 13241
    164764 "UNIFRAX INDIA PVT. LTD."                   "02-04-1996"    1 2 4 1996 1997 13241
    269920 "VOLTAS LTD."                               "02-04-1996" 1.06 2 4 1996 1997 13241
     98991 "INDIAN SEAMLESS METAL TUBES LTD. [MERGED]" "02-04-1996"  .98 2 4 1996 1997 13241
    223799 "SHREE VAANI SUGARS & INDS. LTD. [MERGED]"  "02-04-1996"  .89 2 4 1996 1997 13241
     37079 "BLUE STAR LTD."                            "02-04-1996" 1.02 2 4 1996 1997 13241
    275224 "ZENITH FIBRES LTD."                        "02-04-1996"  .91 2 4 1996 1997 13241
    266398 "VIKALP SECURITIES LTD."                    "02-04-1996"  .96 2 4 1996 1997 13241
     68528 "MENA MANI INDS. LTD."                      "02-04-1996"  1.2 2 4 1996 1997 13241
     23482 "A S I INDUSTRIES LTD."                     "02-04-1996"  .98 2 4 1996 1997 13241
     35306 "BHUWALKA STEEL INDS. LTD."                 "02-04-1996"  .96 2 4 1996 1997 13241
    152087 "N I I T LTD."                              "02-04-1996" 1.02 2 4 1996 1997 13241
    167986 "PAAM PHARMACEUTICALS (DELHI) LTD."         "02-04-1996" 1.01 2 4 1996 1997 13241
     41332 "CALCOM VISION LTD."                        "02-04-1996"    1 2 4 1996 1997 13241
    212975 "SARIKA PAINTS LTD."                        "02-04-1996"  .87 2 4 1996 1997 13241
    226600 "SIDDHI VINAYAK METAL CO. LTD."             "02-04-1996" 1.06 2 4 1996 1997 13241
    169725 "PANJON LTD."                               "02-04-1996"    1 2 4 1996 1997 13241
    272875 "PAGARIA ENERGY LTD."                       "02-04-1996" 1.06 2 4 1996 1997 13241
     79489 "GLOBAL OFFSHORE SERVICES LTD."             "02-04-1996"  .87 2 4 1996 1997 13241
    243521 "SURYODAYA PLASTICS LTD."                   "02-04-1996"  .83 2 4 1996 1997 13241
     97057 "I T C CLASSIC FINANCE LTD. [MERGED]"       "02-04-1996" 1.03 2 4 1996 1997 13241
    184916 "QUALITY STEELS & FORGINGS LTD."            "02-04-1996"  .92 2 4 1996 1997 13241
     66728 "ELECTROSTEEL CASTINGS LTD."                "02-04-1996" 1.16 2 4 1996 1997 13241
     66917 "ELGI EQUIPMENTS LTD."                      "02-04-1996"    1 2 4 1996 1997 13241
     25790 "AXTEL INDUSTRIES LTD."                     "02-04-1996"  .92 2 4 1996 1997 13241
    120630 "KIDUJA INDIA LTD."                         "02-04-1996"  .94 2 4 1996 1997 13241
     58783 "CHHUBB'S COMPUTER VAULT LTD."              "02-04-1996"    1 2 4 1996 1997 13241
     32716 "BETA NAPHTHOL LTD."                        "02-04-1996"  .98 2 4 1996 1997 13241
    155424 "NATCO POLYPLAST LTD."                      "02-04-1996"  .96 2 4 1996 1997 13241
    206995 "SAGAR APPARELS LTD."                       "02-04-1996" 1.06 2 4 1996 1997 13241
    183839 "PUNJAB IRON & STEEL CO. LTD."              "02-04-1996"  .86 2 4 1996 1997 13241
     73568 "FIRTH (INDIA) STEEL CO. LTD."              "02-04-1996" 1.05 2 4 1996 1997 13241
     76204 "G E I INDUSTRIAL SYSTEMS LTD."             "02-04-1996"  .98 2 4 1996 1997 13241
    174416 "PERK PHARMACEUTICALS LTD."                 "02-04-1996"    1 2 4 1996 1997 13241
     36081 "BIOFIL CHEMICALS & PHARMACEUTICALS LTD."   "02-04-1996"  .87 2 4 1996 1997 13241
    188393 "RAASI CEMENT LTD."                         "02-04-1996"  .95 2 4 1996 1997 13241
     86189 "GRINDWELL NORTON LTD."                     "02-04-1996" 1.03 2 4 1996 1997 13241
     43774 "CEPHAM MILK SPECIALITIES LTD."             "02-04-1996"    1 2 4 1996 1997 13241
     20138 "ARORA FIBRES LTD."                         "02-04-1996"  1.1 2 4 1996 1997 13241
     25580 "C N I RESEARCH LTD."                       "02-04-1996"  1.2 2 4 1996 1997 13241
     52303 "CREST ANIMATION STUDIOS LTD."              "02-04-1996" 1.06 2 4 1996 1997 13241
    186872 "NARAYAN AGRO FOODS LTD."                   "02-04-1996"  .89 2 4 1996 1997 13241
    121038 "KIRAN PRINT-PACK LTD."                     "02-04-1996"  .98 2 4 1996 1997 13241
    239332 "SUMERU INDUSTRIES LTD."                    "02-04-1996"  .92 2 4 1996 1997 13241
    266042 "DARSHAN HOUSING & INFRASTRUCTURE LTD."     "02-04-1996"  .88 2 4 1996 1997 13241
    133547 "MAC CHARLES (INDIA) LTD."                  "02-04-1996" 1.03 2 4 1996 1997 13241
    241791 "S D F INDUSTRIES LTD."                     "02-04-1996"    1 2 4 1996 1997 13241
     33162 "BHAGWATI GLASS CONTAINERS LTD."            "02-04-1996" 1.12 2 4 1996 1997 13241
    236509 "STEEL STRIPS LTD. [MERGED]"                "02-04-1996"  .93 2 4 1996 1997 13241
     10714 "ALFA TRANSFORMERS LTD."                    "02-04-1996"    1 2 4 1996 1997 13241
    162065 "NU TECH ORGANIC CHEMICALS LTD."            "02-04-1996" 1.06 2 4 1996 1997 13241
    164242 "ONWARD TECHNOLOGIES LTD."                  "02-04-1996"    1 2 4 1996 1997 13241
    127130 "BOSTON BIO SYSTEMS LTD."                   "02-04-1996"  .88 2 4 1996 1997 13241
     73840 "UFLEX LTD."                                "02-04-1996" 1.02 2 4 1996 1997 13241
    252414 "TOURISM FINANCE CORPN. OF INDIA LTD."      "02-04-1996" 1.13 2 4 1996 1997 13241
     96001 "HYDERABAD LAMPS LTD."                      "02-04-1996"    1 2 4 1996 1997 13241
    154181 "NAMTECH ELECTRONIC DEVICES LTD."           "02-04-1996" 1.01 2 4 1996 1997 13241
     42236 "CAPLIN POINT LABORATORIES LTD."            "02-04-1996" 1.09 2 4 1996 1997 13241
     71864 "FAIRFIELD ATLAS LTD."                      "02-04-1996" 1.03 2 4 1996 1997 13241
    133559 "MAC INDUSTRIES LTD. [MERGED]"              "02-04-1996"  1.1 2 4 1996 1997 13241
    238066 "SUDARSHAN CEMENT & MULTIPROJECTS LTD."     "02-04-1996" 1.05 2 4 1996 1997 13241
    155066 "NARMADA CEMENT CO. LTD. [MERGED]"          "02-04-1996"  .92 2 4 1996 1997 13241
    258271 "UNIVERSAL CABLES LTD."                     "02-04-1996"    1 2 4 1996 1997 13241
    223630 "SHREE SHYAM FABRICS LTD."                  "02-04-1996"    1 2 4 1996 1997 13241
     90362 "HARIA EXPORTS LTD."                        "02-04-1996"  .93 2 4 1996 1997 13241
    176337 "PLATINUM FINANCE LTD."                     "02-04-1996"    1 2 4 1996 1997 13241
     66436 "ELCAPS CAPACITORS LTD."                    "02-04-1996"  .92 2 4 1996 1997 13241
    230463 "SOLARSON INDUSTRIES LTD."                  "02-04-1996" 1.04 2 4 1996 1997 13241
    205838 "S V A INDIA LTD."                          "02-04-1996"  .88 2 4 1996 1997 13241
      9167 "AJCON GLOBAL SERVICES LTD."                "02-04-1996"    1 2 4 1996 1997 13241
    208602 "SAKTHI SUGARS LTD."                        "02-04-1996" 1.03 2 4 1996 1997 13241
     89597 "HAMCO MINING & SMELTING LTD."              "02-04-1996" 1.05 2 4 1996 1997 13241
    160251 "NIRLON LTD."                               "02-04-1996"  .97 2 4 1996 1997 13241
     27031 "B M B MUSIC & MAGNETICS LTD."              "02-04-1996"  .99 2 4 1996 1997 13241
    163397 "OLYMPIA INDUSTRIES LTD."                   "02-04-1996"  .83 2 4 1996 1997 13241
    241688 "SUPERHOUSE LTD."                           "02-04-1996"    1 2 4 1996 1997 13241
    end
    format %td ddate
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