f/overrides/event-backup/lcfix-dividend.csv
Greg Pomerantz bb8e39605e Event-history protection: backup dir, empty-download fallback, docs
Yahoo's 2026 event-feed change (capitalGain events dropped for some
funds; no events at all for terminated tickers) can wipe good event
history on re-download. Defense in depth:

- overrides/event-backup/: last-known-good copy of every dividend/
  capitalGain file (8,192 files, 58 MB); refresh with
  scripts/backup_events.py after each dump update
- data.py event_file(): frozen > data-root (while populated) > backup;
  used by panel reads, verify_official, and the double-listing scanner
- README: capital-gain files are mutual-fund-only in this dump; Yahoo
  has no LT/ST split (tax.py taxes capg at lt_rate; the per-fund split
  would come from fund-company annual tax statements or commercial feeds)
- tests: exact Timestamp .loc keys (pandas 3.x string matching returns a
  Series on large DatetimeIndex)
2026-08-31 21:59:25 -04:00

11 KiB

1DateDividends
21996-12-020.014000
31997-07-100.034000
41999-04-010.010000
51996-10-110.034000
61995-10-310.049000
71997-10-010.012000
82001-02-020.041000
92002-10-030.042000
102003-09-300.040000
111994-06-300.051000
122004-10-290.034000
131987-10-300.059000
141996-08-010.017000
152007-04-300.037000
162010-05-280.039000
171992-04-300.052000
181998-08-100.032000
192013-12-310.032000
202015-03-310.030000
212025-12-310.030000
221988-05-310.061000
232006-09-290.035000
242013-09-300.032000
251999-03-090.033000
261995-08-310.049000
271998-12-010.010000
281999-11-040.039000
292014-10-310.031000
302018-03-290.027000
311995-07-310.049000
322011-05-310.039000
331993-05-280.055000
342000-01-030.004000
352015-05-290.030000
362020-01-310.024000
372024-02-290.028000
381991-04-300.057000
392017-10-310.028000
402020-04-300.024000
412006-02-280.035000
422005-06-300.033000
432015-10-300.031000
442021-01-290.022000
451999-01-070.036000
462014-08-290.031000
472017-02-280.030000
482011-10-310.038000
491998-10-010.010000
502004-11-300.036000
512013-03-280.030000
521990-06-290.056000
531998-03-100.032000
541998-06-010.011000
552012-04-300.036000
562024-12-310.028000
571990-11-300.056000
582003-11-280.038000
592004-12-310.035000
602009-04-300.036000
612009-06-300.036000
622019-06-280.027000
631987-07-310.064000
641993-10-290.055000
652004-01-300.040000
662005-10-310.037000
671993-07-300.055000
681993-04-300.053000
691999-06-080.033000
702007-11-300.038000
711990-10-310.059000
722000-12-010.009000
732007-09-280.038000
742021-08-310.021000
752022-06-300.022000
761997-03-110.033000
772002-06-030.042000
782007-03-300.037000
792010-12-310.039000
802016-09-300.028000
812016-10-310.028000
822019-08-300.025000
832023-09-290.027000
841998-05-010.012000
852024-07-310.028000
862023-11-300.028000
871995-03-310.050000
881986-03-310.076000
892016-04-290.031000
902026-02-270.031000
911986-02-280.061000
921997-06-020.014000
932000-11-010.008000
942005-11-300.034000
952007-10-310.036000
962010-10-290.039000
972022-08-310.022000
981986-01-310.066000
992008-01-310.036000
1001998-12-080.034000
1012015-06-300.031000
1022018-09-280.028000
1032013-06-280.031000
1042005-04-290.035000
1052019-01-310.028000
1061987-12-310.060000
1071993-03-310.057000
1081995-04-280.049000
1092013-11-290.032000
1102019-10-310.025000
1112023-07-310.026000
1121987-09-300.059000
1132000-04-040.039000
1142006-11-300.034000
1152009-08-310.040000
1162020-07-310.023000
1171994-08-310.052000
1181990-01-310.056000
1192013-01-310.031000
1201987-02-270.058000
1212000-08-010.004000
1222016-05-310.030000
1232017-07-310.028000
1242018-01-310.027000
1252022-03-310.021000
1261990-02-280.052000
1271989-02-280.054000
1281999-03-010.011000
1292016-02-290.032000
1301986-10-310.062000
1311988-08-310.062000
1321989-08-310.060000
1332008-10-310.038000
1342010-06-300.040000
1352012-08-310.032000
1362017-05-310.028000
1371985-09-300.061000
1382013-08-300.031000
1392021-12-310.020000
1402000-09-010.007000
1411992-11-300.055000
1421999-11-010.004000
1432012-02-290.037000
1442017-06-300.028000
1452021-10-290.021000
1462025-04-300.029000
1472026-01-300.030000
1481988-03-310.060000
1492026-03-310.030000
1501997-02-030.011000
1512006-01-310.038000
1522024-03-280.027000
1531986-04-300.069000
1542001-08-020.043000
1552006-10-310.039000
1562010-03-310.039000
1572012-12-310.031000
1582023-08-310.026000
1592000-07-310.043000
1601990-07-310.059000
1611996-09-110.032000
1622000-12-070.038000
1632001-06-050.043000
1642016-08-310.028000
1652018-07-310.027000
1662018-10-310.028000
1671986-05-300.066000
1682023-06-300.026000
1691996-11-010.013000
1702005-09-300.037000
1711989-04-280.059000
1721997-03-030.015000
1732001-01-020.005000
1742001-03-020.039000
1752014-11-280.031000
1762021-04-300.022000
1772022-02-280.020000
1782025-09-300.030000
1791996-11-110.033000
1801995-09-290.046000
1812005-02-280.034000
1822015-08-310.031000
1831991-10-310.059000
1841992-12-310.057000
1851997-04-010.014000
1862012-07-310.033000
1872019-09-300.025000
1882023-03-310.025000
1891989-07-310.061000
1901998-11-020.009000
1912018-11-300.028000
1921989-03-310.060000
1931997-10-090.035000
1941996-04-300.045000
1952021-11-300.021000
1962003-04-300.040000
1972022-07-290.022000
1982005-05-310.038000
1992000-08-040.037000
2002009-12-310.039000
2012010-08-310.039000
2022014-12-310.031000
2032022-12-300.025000
2041989-09-290.058000
2052026-07-310.030000
2061986-11-280.062000
2071993-12-310.054000
2081995-11-300.048000
2092007-06-290.036000
2102019-02-280.030000
2112020-06-300.024000
2121992-02-280.054000
2132012-10-310.032000
2142004-05-280.037000
2152017-12-290.027000
2162009-11-300.039000
2172013-07-310.031000
2181991-05-310.058000
2192009-05-290.038000
2202022-01-310.020000
2212023-05-310.025000
2221987-04-300.062000
2231989-05-310.060000
2241993-09-300.054000
2251996-08-120.032000
2262008-03-310.041000
2272016-11-300.029000
2282019-05-310.027000
2291988-09-300.058000
2301989-01-310.059000
2311992-08-310.056000
2321997-07-010.014000
2332001-04-030.043000
2342020-05-290.024000
2351985-10-310.070000
2362004-04-300.036000
2372014-09-300.031000
2382023-02-280.025000
2391996-09-030.016000
2401994-10-310.051000
2411992-01-310.059000
2421992-06-300.055000
2432006-08-310.034000
2442016-07-290.030000
2451990-04-300.057000
2461996-01-310.049000
2472001-07-050.043000
2482013-10-310.031000
2492024-04-300.028000
2501992-05-290.056000
2511993-02-260.052000
2522001-09-050.043000
2532023-01-310.024000
2541988-04-290.058000
2552001-10-020.043000
2562003-01-020.042000
2572019-12-310.024000
2581999-12-030.004000
2591999-05-030.010000
2602001-01-040.042000
2612007-08-310.039000
2622011-11-300.038000
2631986-12-310.066000
2641994-07-290.051000
2651998-04-010.012000
2661998-07-010.012000
2672008-12-310.037000
2682009-03-310.041000
2692011-06-300.039000
2702014-05-300.032000
2711991-02-280.052000
2721990-08-310.058000
2732005-12-300.036000
2742008-04-300.036000
2752010-01-290.039000
2761990-03-300.058000
2772004-09-300.037000
2782016-12-300.029000
2791995-12-290.048000
2801999-08-020.009000
2812004-02-270.035000
2822014-06-300.031000
2831992-10-300.056000
2842012-06-290.034000
2852008-07-310.037000
2862009-07-310.040000
2872012-09-280.032000
2882022-11-300.024000
2892006-12-290.035000
2902000-11-070.034000
2912001-12-040.042000
2922003-08-290.042000
2932008-09-300.041000
2942008-11-280.037000
2951988-11-300.056000
2962002-09-030.042000
2972011-02-280.040000
2981998-02-020.009000
2991991-11-290.056000
3001999-12-310.039000
3011991-06-280.056000
3021993-06-300.054000
3032013-02-280.031000
3042021-03-310.022000
3052025-01-310.028000
3062025-03-310.029000
3071993-01-290.056000
3081997-08-010.012000
3092000-03-030.039000
3102012-03-300.037000
3111994-01-310.052000
3122006-03-310.035000
3132007-12-310.039000
3142002-01-030.042000
3151989-06-300.058000
3162001-11-010.043000
3172022-05-310.021000
3181985-12-310.069000
3191998-01-020.011000
3201999-10-050.039000
3212005-01-310.037000
3222019-04-300.028000
3231991-09-300.056000
3242001-02-010.001000
3251997-08-110.033000
3261998-09-090.033000
3271999-10-010.006000
3282010-02-260.039000
3291991-08-300.058000
3301997-09-090.033000
3312005-03-310.035000
3322024-05-310.028000
3331996-07-010.018000
3342024-08-300.028000
3352002-08-020.042000
3361999-07-010.010000
3371998-05-110.032000
3382002-11-040.042000
3392003-02-030.042000
3402011-09-300.038000
3412015-11-300.032000
3421993-11-300.052000
3431986-09-300.063000
3441998-06-090.032000
3451999-01-040.009000
3461986-07-310.066000
3471999-09-010.005000
3481994-04-290.050000
3491996-12-100.034000
3502012-05-310.035000
3512015-01-300.031000
3521986-06-300.063000
3531999-05-100.033000
3542013-04-300.030000
3552018-05-310.027000
3562018-08-310.028000
3572018-12-310.028000
3581990-12-310.058000
3592001-05-030.043000
3602015-09-300.031000
3612016-03-310.031000
3622022-09-300.023000
3632000-01-040.040000
3642014-07-310.031000
3652005-08-310.034000
3662009-01-300.041000
3672011-07-290.042000
3682000-05-010.004000
3691987-06-300.062000
3701988-06-300.058000
3711994-12-300.048000
3722000-10-020.007000
3732007-01-310.035000
3742011-01-310.039000
3752019-03-290.028000
3761987-01-300.061000
3771996-03-290.048000
3782003-03-310.044000
3791996-02-290.046000
3801996-05-310.047000
3811989-10-310.061000
3822008-02-290.037000
3832014-03-310.031000
3842026-05-290.030000
3851995-02-280.046000
3861990-09-280.056000
3871997-05-120.033000
3882000-04-030.004000
3892001-03-010.002000
3902021-02-260.023000
3911985-11-290.066000
3922006-07-310.038000
3932016-01-290.032000
3942025-06-300.029000
3951998-01-080.036000
3961997-02-100.032000
3972004-07-300.037000
3982017-04-280.029000
3991987-11-300.060000
4002025-02-280.029000
4011998-10-080.034000
4022024-01-310.027000
4031997-01-020.012000
4041997-05-010.014000
4051997-06-100.033000
4061997-11-030.011000
4071999-04-080.033000
4082021-05-280.021000
4092022-04-290.023000
4101992-07-310.056000
4112002-02-010.042000
4121993-08-310.055000
4131998-08-030.010000
4142000-06-010.002000
4152002-07-030.042000
4161992-09-300.055000
4172021-09-300.021000
4182024-11-290.028000
4192000-09-060.036000
4202002-03-040.042000
4212002-12-040.042000
4222017-01-310.029000
4232020-10-300.023000
4241987-03-310.068000
4252009-02-270.036000
4262012-01-310.037000
4271999-07-080.034000
4282019-11-290.025000
4292011-12-300.038000
4302017-11-300.028000
4312018-06-290.028000
4322022-10-310.023000
4332024-09-300.028000
4342024-10-310.028000
4352026-04-300.030000
4362009-09-300.036000
4371996-07-150.030000
4382004-06-300.033000
4392005-07-290.036000
4402011-03-310.040000
4412011-04-290.040000
4422014-01-310.032000
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4442000-03-010.003000
4452018-02-280.028000
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4491999-09-070.038000
4502011-08-310.039000
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4541997-04-100.033000
4552007-05-310.036000
4562013-05-310.030000
4572015-07-310.031000
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4601997-09-020.012000
4611997-11-100.033000
4621997-12-010.012000
4631998-07-090.033000
4642017-08-310.026000
4652020-11-300.023000
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4672024-06-280.028000
4682009-10-300.038000
4692020-09-300.023000
4702004-08-310.038000
4711998-02-090.031000
4722015-02-270.031000
4731994-11-300.048000
4742000-02-030.040000
4752023-04-280.025000
4761991-01-310.059000
4772018-04-300.028000
4782026-06-300.030000
4792003-05-300.040000
4802000-05-040.042000
4812003-07-310.039000
4822021-07-300.021000
4832025-05-300.029000
4841998-09-010.011000
4852004-03-310.035000
4862020-08-310.022000
4872020-12-310.022000
4881998-03-020.013000
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4951997-01-090.036000
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4972010-11-300.040000
4982019-07-310.026000
4992025-08-290.030000
5002025-11-280.030000
5011988-01-290.059000
5021999-08-090.038000
5032002-04-030.042000
5042008-05-300.040000
5052008-06-300.041000
5062016-06-300.030000
5071988-10-310.059000
5081994-02-280.047000
5091994-09-300.051000
5101995-01-310.050000
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5142002-05-020.042000
5152006-04-280.034000
5162006-06-300.035000
5172010-07-300.041000
5182015-12-310.031000
5191987-05-290.063000
5202000-10-060.035000
5212015-04-300.031000
5222020-03-310.024000
5232023-10-310.027000
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5262000-06-020.039000
5271992-03-310.056000
5282000-02-010.003000
5291988-02-290.058000
5301999-02-010.007000
5312014-04-300.032000
5322021-06-300.022000
5331996-10-010.016000
5342003-06-300.035000
5352003-12-310.036000
5362008-08-290.039000
5372010-09-300.039000
5382014-02-280.033000
5391999-02-080.032000
5402017-03-310.029000
5412020-02-280.024000
5421988-12-300.061000
5432007-02-280.035000
5442017-09-290.027000
5452023-12-290.027000
5461994-05-310.052000