f/overrides/event-backup/fcotx-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

9.2 KiB

1DateDividends
21996-06-280.043000
31997-12-100.044000
42007-06-110.035000
52025-02-280.029000
62026-07-310.030000
71991-06-280.050000
81993-04-300.050000
91997-03-100.044000
102002-04-100.045000
112022-09-300.021000
121999-09-100.041000
132015-11-300.032000
142013-04-300.033000
152016-08-310.028000
162023-10-310.027000
171988-07-290.054000
181992-03-310.052000
192022-06-300.018000
202002-02-110.042000
212003-01-100.041000
222024-10-310.029000
231988-09-300.053000
242007-12-240.035000
252009-07-310.036000
262019-06-280.027000
271989-05-310.052000
281991-08-300.052000
292000-07-100.042000
302016-11-300.028000
312018-01-310.029000
322000-08-100.042000
332007-02-120.035000
342014-12-050.004000
352025-11-280.030000
362026-03-310.030000
372016-01-290.032000
382017-10-310.029000
391987-08-310.060000
401994-04-290.047000
412011-06-300.036000
422019-09-300.027000
431988-05-310.054000
441998-12-100.043000
452000-06-120.042000
462016-07-290.030000
471987-06-300.058000
482003-03-100.041000
492004-02-100.037000
502019-07-310.027000
511991-02-280.047000
521992-11-300.049000
532011-09-300.036000
542013-06-280.033000
552001-12-100.044000
562004-04-120.037000
571993-01-290.051000
581994-02-280.045000
592004-09-100.034000
602009-10-300.036000
612010-08-310.036000
621991-03-280.052000
632008-10-310.035000
642018-08-310.029000
651990-03-300.052000
661996-09-300.043000
672002-07-100.042000
682018-06-290.029000
692024-06-280.029000
702021-12-310.016000
712025-10-310.030000
721996-05-310.045000
731999-03-100.041000
742000-12-110.042000
752004-05-100.034000
762016-09-300.028000
772018-07-310.029000
782022-12-300.023000
791995-12-290.045000
801998-02-100.044000
812019-05-310.027000
822025-05-300.030000
832011-08-310.036000
842018-11-300.029000
852024-08-300.029000
861988-04-290.053000
871994-06-300.047000
881995-02-280.043000
892002-09-100.042000
902008-11-280.035000
911993-09-300.048000
922006-01-100.035000
931987-07-310.060000
941991-07-310.052000
952013-05-310.033000
962022-04-290.017000
972023-05-310.027000
981990-01-310.052000
991991-11-290.050000
1001998-03-100.044000
1012008-03-310.035000
1022009-04-300.036000
1032003-10-100.039000
1042020-08-310.021000
1051995-03-310.048000
1062006-05-100.035000
1072008-04-300.035000
1082020-02-280.022000
1091995-09-290.046000
1102009-08-310.036000
1112013-10-310.033000
1121989-08-310.052000
1131990-05-310.052000
1141999-04-120.041000
1151999-12-030.026000
1162011-12-300.036000
1171996-03-290.045000
1181998-04-130.044000
1192023-03-310.025000
1201994-07-290.048000
1212000-11-100.042000
1222017-08-310.029000
1232020-07-310.022000
1242022-05-310.018000
1252013-07-310.033000
1262014-05-300.034000
1272002-08-120.042000
1282005-03-100.034000
1292006-06-120.035000
1302006-11-100.035000
1312007-09-100.035000
1321987-12-310.056000
1331990-02-280.047000
1341999-08-090.041000
1352012-11-300.033000
1362018-04-300.029000
1371988-03-310.055000
1382009-06-300.036000
1392017-01-310.028000
1402021-09-300.016000
1412023-12-290.029000
1422001-11-120.044000
1432009-11-300.036000
1442010-05-280.036000
1452014-01-310.034000
1461999-12-200.042000
1472010-10-290.036000
1482016-03-310.032000
1492017-06-300.028000
1502018-05-310.029000
1512003-08-110.039000
1522021-04-300.018000
1532024-03-280.029000
1541989-11-300.050000
1552005-12-120.035000
1562020-06-300.022000
1572023-07-310.027000
1582018-03-290.029000
1592020-10-300.021000
1601987-09-300.056000
1611990-08-310.052000
1621990-11-300.050000
1632002-12-100.041000
1642005-06-100.035000
1651994-12-300.048000
1662009-09-300.036000
1672022-11-300.024000
1681999-01-110.041000
1692007-04-100.035000
1702014-04-300.034000
1712024-01-310.029000
1722024-04-300.029000
1731992-01-310.052000
1741993-02-260.046000
1752009-03-310.036000
1762011-01-310.036000
1772013-08-300.033000
1781992-02-280.049000
1791992-09-300.051000
1802021-11-300.016000
1812026-01-300.030000
1822003-11-100.039000
1832010-06-300.036000
1842010-09-300.036000
1852015-02-270.034000
1861993-06-300.050000
1872001-04-100.043000
1882019-03-290.029000
1892022-02-280.017000
1901987-11-300.054000
1911993-12-310.049000
1922001-07-100.043000
1932015-04-300.034000
1942016-05-310.030000
1952003-05-120.039000
1962003-12-100.039000
1972013-02-280.033000
1981991-10-310.052000
1992005-08-100.035000
2002007-01-100.035000
2012007-07-100.035000
2022012-07-310.036000
2031988-08-310.054000
2042002-10-100.042000
2052014-10-310.034000
2062025-07-310.030000
2072025-09-300.030000
2082005-09-120.035000
2092015-12-310.032000
2102023-06-300.027000
2112026-05-290.030000
2122015-07-310.034000
2132018-02-280.029000
2142021-01-290.019000
2151996-10-310.044000
2161997-10-100.044000
2172009-12-240.036000
2182013-03-280.033000
2192015-01-300.034000
2202007-10-100.035000
2212011-07-290.036000
2222023-11-300.029000
2231995-04-280.046000
2242012-04-300.036000
2252003-07-100.039000
2262016-06-300.030000
2271990-10-310.052000
2281997-06-100.044000
2291999-02-100.041000
2302000-04-100.042000
2312001-06-110.043000
2322011-02-280.036000
2332026-02-270.030000
2341989-12-290.052000
2351995-11-300.045000
2361996-12-310.044000
2372022-07-290.021000
2382025-03-310.029000
2392008-12-240.035000
2402013-09-300.033000
2412020-03-310.022000
2421989-03-310.052000
2431990-07-310.052000
2441996-02-290.042000
2451999-07-120.041000
2462015-10-300.032000
2471987-10-300.057000
2481988-12-300.054000
2491999-10-110.042000
2502001-02-120.043000
2512010-02-260.036000
2521994-10-310.048000
2531996-11-290.043000
2541997-11-100.044000
2552001-08-100.044000
2561995-08-310.048000
2571997-01-310.044000
2582025-12-310.030000
2591990-12-310.052000
2601993-11-300.048000
2612009-05-290.036000
2622022-08-310.021000
2631992-08-310.051000
2642005-07-110.035000
2652009-02-270.036000
2661991-05-310.052000
2672004-10-110.034000
2682023-08-310.027000
2692024-05-310.029000
2701988-11-300.052000
2711990-09-280.050000
2722006-03-100.035000
2732024-02-290.029000
2741993-08-310.051000
2752016-04-290.032000
2762017-07-310.028000
2772025-08-290.030000
2782006-12-110.035000
2792021-02-260.018000
2802000-09-110.042000
2812007-11-290.035000
2821997-04-100.044000
2832003-09-100.039000
2842016-12-300.028000
2852017-11-300.029000
2862019-01-310.029000
2871992-04-300.049000
2881996-04-300.044000
2892003-06-100.039000
2902023-09-290.027000
2912002-05-100.045000
2922006-09-110.035000
2931993-03-310.051000
2941995-01-310.048000
2952007-03-120.035000
2962008-02-290.035000
2971994-09-300.047000
2982008-09-300.035000
2992013-11-290.034000
3001989-04-280.050000
3011992-12-310.051000
3021994-01-310.049000
3032004-06-100.034000
3041992-10-300.051000
3052000-10-100.042000
3062011-04-290.036000
3072012-05-310.036000
3082021-06-300.016000
3092012-08-310.034000
3102015-09-300.032000
3112021-03-310.018000
3122004-07-120.034000
3132014-02-280.034000
3142020-09-300.021000
3152025-06-300.030000
3161995-05-310.048000
3171998-01-120.044000
3181998-08-100.043000
3192000-01-100.042000
3202000-05-100.042000
3211989-09-290.050000
3222003-04-100.041000
3232006-08-100.035000
3242010-12-310.036000
3252020-01-310.025000
3261996-07-310.044000
3272001-05-100.043000
3282005-02-100.034000
3292023-02-280.025000
3302024-07-310.029000
3311998-07-100.043000
3322002-03-110.042000
3332010-01-290.036000
3342015-05-290.034000
3352002-01-100.044000
3362019-04-300.029000
3372024-12-310.029000
3382014-11-280.034000
3392015-06-300.034000
3402014-03-310.034000
3412017-09-290.029000
3421998-09-100.043000
3432001-10-100.044000
3442024-11-290.029000
3451997-07-100.044000
3462012-12-310.033000
3472020-12-310.019000
3482023-01-310.024000
3492021-10-290.016000
3502025-01-310.029000
3512001-01-100.042000
3522004-01-120.039000
3532004-08-100.034000
3542005-10-100.035000
3552015-08-310.032000
3561994-08-310.048000
3571996-08-300.044000
3582012-09-280.034000
3592018-10-310.029000
3602025-04-300.029000
3611993-05-280.051000
3621999-06-100.041000
3632005-04-110.034000
3642013-12-310.034000
3652017-02-280.028000
3662005-01-100.034000
3672022-03-310.017000
3681989-01-310.054000
3691989-06-300.050000
3701991-01-310.052000
3711992-07-310.051000
3722001-03-120.043000
3731999-05-280.041000
3742004-12-100.034000
3752005-05-100.035000
3762005-11-100.035000
3772026-06-300.030000
3781993-10-290.049000
3792021-05-280.016000
3802021-08-310.016000
3811992-06-300.049000
3821994-05-310.049000
3831992-05-290.051000
3841998-06-100.044000
3852000-03-100.042000
3862008-01-310.035000
3872018-09-280.029000
3881989-10-310.052000
3891990-06-290.050000
3901998-11-100.043000
3911997-09-090.044000
3922008-06-300.035000
3932019-02-280.029000
3941994-11-300.046000
3952019-10-310.027000
3962026-04-300.030000
3971997-02-280.044000
3982006-07-100.035000
3991991-09-300.050000
4001996-01-310.045000
4012018-12-310.029000
4022022-01-310.016000
4032023-04-280.025000
4041990-04-300.050000
4051993-07-300.051000
4061988-01-290.056000
4071989-02-280.048000
4082000-02-100.042000
4092001-09-100.044000
4102006-10-100.035000
4112020-04-300.022000
4122012-02-290.036000
4132012-06-290.036000
4142013-01-310.033000
4151997-08-110.044000
4162010-07-300.036000
4172020-11-300.019000
4181995-10-310.047000
4191998-10-120.043000
4202008-07-310.035000
4212004-03-100.037000
4222021-07-300.016000
4232022-10-310.021000
4242006-02-100.035000
4252009-01-300.035000
4262017-12-290.029000
4272024-09-300.029000
4281991-12-310.052000
4292003-02-100.041000
4302014-06-300.034000
4312014-09-300.034000
4322017-04-280.028000
4331997-05-120.044000
4342012-03-300.036000
4352014-12-310.034000
4362017-05-310.028000
4372019-12-310.025000
4381994-03-310.049000
4392002-06-100.042000
4402012-01-310.036000
4412014-08-290.034000
4422017-03-310.028000
4431988-02-290.052000
4442006-04-100.035000
4452008-05-300.035000
4462011-05-310.036000
4472014-07-310.034000
4482015-03-310.034000
4491989-07-310.052000
4502002-11-110.041000
4512007-08-100.035000
4522008-08-290.035000
4532010-03-310.036000
4542019-11-290.025000
4551995-06-300.046000
4562007-05-100.035000
4572020-05-290.022000
4581998-05-110.044000
4591998-12-030.030000
4602012-10-310.034000
4611988-10-310.054000
4622016-02-290.032000
4632016-10-310.028000
4642019-08-300.027000
4651988-06-300.053000
4661991-04-300.050000
4671995-07-310.048000
4682011-11-300.036000
4692011-10-310.036000
4701999-11-100.042000
4712004-11-100.034000
4722010-11-300.036000
4732011-03-310.036000