f/overrides/event-backup/mfpax-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

7.8 KiB

1DateDividends
22006-06-300.036000
32008-10-310.036000
42014-12-310.030000
52017-12-290.033000
62020-07-310.025000
72021-09-300.017000
82000-02-290.041000
92005-07-290.036000
102026-07-310.029000
111996-07-310.045000
121998-10-300.041000
132002-10-310.040000
142003-05-300.039000
152011-02-280.033000
162019-08-300.028000
171994-11-300.046000
181995-06-300.046000
192024-02-290.025000
202012-08-310.033000
212019-10-310.028000
222022-07-290.021000
231997-05-300.042000
242001-07-310.041000
251997-07-310.042000
261998-09-300.041000
272000-06-300.042000
282001-06-290.041000
292004-08-310.037000
302009-03-310.037000
311996-04-300.046000
321996-05-310.046000
332016-06-300.030000
342017-09-290.030000
352022-01-310.017000
362009-07-310.037000
372014-11-280.028000
382001-11-300.041000
392001-12-310.041000
402003-09-300.034000
412005-12-300.036000
422006-08-310.035000
432015-11-300.030000
441997-09-300.042000
451997-12-310.035000
462019-03-290.029000
472006-03-310.036000
481999-08-310.041000
492005-05-310.036000
502007-12-310.035000
512020-04-300.025000
522023-03-310.026000
531994-03-310.045000
541999-04-300.040000
552006-05-310.036000
562009-01-300.036000
572012-07-310.034000
582014-08-290.029000
592017-01-310.033000
601997-10-310.042000
612001-08-310.041000
622002-05-310.041000
632009-12-310.037000
642011-01-310.037000
652013-03-280.031000
662015-07-310.031000
672023-06-300.024000
682001-01-310.041000
692001-05-310.041000
702003-02-280.036000
712006-11-300.035000
722009-02-270.036000
732011-07-290.036000
742011-10-310.034000
752022-03-310.017000
761995-07-310.046000
771996-11-290.045000
782006-04-280.036000
792006-09-290.035000
802019-06-280.028000
811999-11-300.041000
822002-06-280.041000
832010-01-290.036000
842013-05-310.031000
852015-01-300.029000
862016-10-310.032000
872017-06-300.032000
882021-01-290.020000
891996-08-300.045000
902003-01-310.037000
911998-05-290.041000
922006-07-310.036000
932012-12-310.031000
942022-02-280.017000
951994-02-280.044000
961997-01-310.045000
972007-10-310.035000
982010-06-300.035000
992014-10-310.030000
1001997-02-280.045000
1012009-05-290.036000
1022018-12-310.030000
1032020-12-310.022000
1042023-02-280.023000
1052026-03-310.029000
1061994-08-310.045000
1071999-07-300.040000
1082022-10-310.022000
1091998-04-300.041000
1102017-08-310.032000
1112012-11-300.031000
1122024-12-310.027000
1131996-12-310.039000
1141998-02-270.041000
1152012-09-280.031000
1162018-08-310.030000
1172019-05-310.029000
1182023-07-310.025000
1191994-10-310.045000
1201999-10-290.041000
1212010-05-280.036000
1222017-11-300.032000
1232021-02-260.019000
1242023-12-290.027000
1251995-05-310.046000
1262008-08-290.036000
1272009-10-300.036000
1282022-12-300.023000
1292026-04-300.028000
1301995-10-310.046000
1312005-06-300.036000
1322012-03-300.035000
1332018-02-280.028000
1342018-06-290.030000
1352020-06-300.024000
1362022-06-300.020000
1372024-03-280.026000
1382007-04-300.035000
1392011-04-290.035000
1402026-05-290.029000
1412024-05-310.026000
1422024-09-300.026000
1432020-10-300.022000
1441993-11-300.045000
1452004-10-290.037000
1462008-06-300.036000
1472013-02-280.028000
1482013-07-310.033000
1492015-06-300.029000
1502018-07-310.031000
1512020-03-310.026000
1522003-12-310.034000
1532004-12-310.037000
1542026-06-300.028000
1552020-11-300.021000
1562021-03-310.020000
1572002-01-310.041000
1582002-09-300.040000
1592006-10-310.035000
1602014-01-310.030000
1612021-05-280.019000
1622025-09-300.027000
1631999-05-280.040000
1642001-10-310.041000
1652015-02-270.027000
1662018-11-300.029000
1672000-08-310.042000
1682007-03-300.035000
1692010-12-310.036000
1702013-09-300.031000
1712024-04-300.025000
1721997-04-300.044000
1732002-07-310.041000
1742007-09-280.035000
1752008-07-310.036000
1762013-11-290.029000
1772020-08-310.024000
1782025-12-310.028000
1791998-06-300.041000
1802002-11-290.040000
1812008-02-290.036000
1822008-05-300.036000
1832009-11-300.035000
1842016-04-290.030000
1852024-06-280.025000
1861995-03-310.046000
1872005-09-300.036000
1882016-12-300.033000
1891995-01-310.046000
1902001-04-300.041000
1912010-02-260.032000
1922015-03-310.029000
1932018-04-300.031000
1942025-04-300.026000
1951993-08-310.045000
1961995-11-300.046000
1972011-09-300.034000
1982021-12-310.017000
1992003-10-310.034000
2002009-06-300.036000
2011997-03-310.044000
2022014-05-300.031000
2032015-08-310.031000
2042018-10-310.030000
2052019-09-300.028000
2062023-01-310.024000
2071993-06-300.045000
2081994-09-300.045000
2092011-12-300.035000
2102016-09-300.031000
2112023-10-310.026000
2122026-02-270.026000
2132006-12-290.035000
2142008-04-300.036000
2152017-02-280.030000
2162025-02-280.024000
2171993-02-260.021000
2182004-07-300.036000
2192017-10-310.031000
2202020-02-280.024000
2212021-04-300.018000
2221998-03-310.041000
2232002-03-280.041000
2242006-02-280.036000
2252022-05-310.021000
2261998-08-310.041000
2271999-01-290.040000
2282007-01-310.035000
2292008-09-300.036000
2302009-09-300.034000
2312016-03-310.031000
2322018-01-310.032000
2332019-01-310.030000
2341994-01-310.044000
2351998-01-300.041000
2362003-04-300.039000
2372005-11-300.036000
2382007-08-310.035000
2392009-08-310.036000
2402015-12-310.030000
2412021-08-310.018000
2421994-04-290.045000
2431995-04-280.046000
2441996-10-310.045000
2451993-03-310.041000
2461993-05-280.043000
2472004-11-300.037000
2482013-08-300.033000
2492015-05-290.030000
2501997-06-300.042000
2512002-04-300.041000
2522012-10-310.033000
2532017-03-310.030000
2542000-10-310.042000
2552011-05-310.036000
2562003-11-280.034000
2572017-05-310.031000
2581993-09-300.045000
2592003-06-300.038000
2602010-10-290.035000
2612014-07-310.030000
2622018-03-290.030000
2632021-07-300.018000
2642024-01-310.027000
2651993-10-290.045000
2662005-04-290.037000
2671999-09-300.041000
2682010-08-310.036000
2691993-07-300.045000
2701999-02-260.041000
2712004-06-300.036000
2722019-11-290.026000
2732021-11-300.017000
2742001-02-280.041000
2752004-05-280.036000
2762007-05-310.035000
2772022-08-310.022000
2781995-02-280.046000
2792000-11-300.042000
2802020-01-310.026000
2812024-11-290.026000
2822000-05-310.042000
2832017-04-280.030000
2841997-11-280.042000
2851999-06-300.040000
2862005-02-280.037000
2872005-03-310.037000
2882010-11-300.034000
2892013-01-310.032000
2901993-04-300.041000
2911996-09-300.045000
2922025-06-300.027000
2932011-06-300.034000
2942012-04-300.033000
2952016-07-290.031000
2962019-07-310.029000
2972021-06-300.018000
2982023-09-290.025000
2992005-10-310.036000
3002010-09-300.034000
3012006-01-310.036000
3022012-05-310.034000
3032023-08-310.026000
3041995-12-290.045000
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3072008-01-310.036000
3082015-04-300.030000
3092016-02-290.029000
3102023-11-300.026000
3112025-03-310.027000
3121995-08-310.046000
3132005-08-310.036000
3142000-01-310.041000
3152000-07-310.041000
3162010-03-310.036000
3172013-12-310.031000
3182014-03-310.030000
3192015-10-300.031000
3201996-02-290.046000
3211998-11-300.040000
3222021-10-290.018000
3232022-11-300.022000
3242025-10-310.028000
3252018-05-310.031000
3262020-09-300.022000
3272000-09-290.042000
3282003-08-290.034000
3292009-04-300.035000
3302024-08-300.026000
3312025-01-310.027000
3321996-01-310.046000
3331999-12-310.041000
3342011-03-310.036000
3352019-02-280.027000
3362000-04-280.041000
3372007-11-300.038000
3382001-03-300.041000
3392002-08-300.040000
3402003-07-310.035000
3412010-07-300.036000
3422011-11-300.033000
3432012-02-290.033000
3441994-07-290.045000
3451995-09-290.046000
3462012-06-290.032000
3472025-11-280.027000
3482001-09-280.041000
3492004-01-300.034000
3502007-06-290.035000
3512013-06-280.032000
3522022-09-300.020000
3531994-05-310.045000
3541996-03-290.046000
3552017-07-310.033000
3562008-03-310.036000
3572008-11-280.036000
3581999-03-310.040000
3592012-01-310.035000
3602013-10-310.031000
3612014-06-300.030000
3622020-05-290.025000
3632023-04-280.026000
3641996-06-280.045000
3651997-08-290.042000
3662023-05-310.026000
3672008-12-310.036000
3682016-01-290.031000
3692019-04-300.029000
3702019-12-310.027000
3711994-12-300.046000
3722007-02-280.035000
3732004-02-270.034000
3742011-08-310.035000
3752013-04-300.029000
3762014-02-280.027000
3772022-04-290.019000
3782025-07-310.027000
3791994-06-300.045000
3801998-07-310.041000
3812026-01-300.028000
3822016-05-310.031000
3832016-08-310.031000
3842018-09-280.029000
3852024-07-310.026000
3862025-08-290.028000
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3882014-04-300.029000
3892004-03-310.035000
3902014-09-300.028000
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3932003-03-310.039000
3942002-02-280.041000
3952002-12-310.040000
3962004-09-300.037000
3972005-01-310.037000
3982015-09-300.031000
3992016-11-300.031000
4001993-12-310.043000
4011998-12-310.040000
4022025-05-300.027000