f/overrides/event-backup/mpw-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

1.6 KiB

1DateDividends
22022-03-160.290000
32023-06-140.290000
42023-09-130.150000
52024-09-090.080000
62006-09-120.260000
72010-03-160.200000
82012-09-110.200000
92014-12-020.210000
102006-12-120.270000
112015-09-150.220000
122023-03-150.290000
132024-06-100.150000
142015-06-090.220000
152015-12-080.220000
162016-09-130.230000
172016-12-060.230000
182007-03-270.270000
192009-09-150.200000
202010-12-070.200000
212011-06-140.200000
222017-03-140.240000
232024-04-190.150000
242011-09-130.200000
252014-03-120.210000
262019-06-120.250000
272025-06-180.080000
282007-09-120.270000
292010-06-150.200000
302010-09-100.200000
312011-03-150.200000
322016-03-150.220000
332021-09-150.280000
342025-09-110.080000
352025-12-110.090000
362012-11-200.200000
372013-06-110.200000
382020-06-170.270000
392025-03-100.080000
402005-09-130.170000
412008-09-160.270000
422018-12-120.250000
432021-06-160.280000
442013-11-290.210000
452017-06-130.240000
462021-03-170.280000
472022-06-150.290000
482006-06-130.250000
492007-06-120.270000
502008-03-110.270000
512011-12-060.200000
522022-12-070.290000
532023-12-060.150000
542006-03-130.210000
552014-09-160.210000
562021-12-080.280000
572022-09-140.290000
582009-12-150.200000
592013-03-120.200000
602015-03-100.220000
612020-12-090.270000
622019-03-130.250000
632020-09-090.270000
642005-12-130.180000
652009-06-090.200000
662017-09-130.240000
672018-06-130.250000
682016-06-140.230000
692017-12-060.240000
702018-09-120.250000
712008-12-190.200000
722009-03-170.200000
732012-03-130.200000
742012-06-120.200000
752019-09-110.260000
762020-03-110.270000
772007-12-110.270000
782013-09-100.200000
792014-06-100.210000
802018-03-140.250000
812008-06-110.270000
822024-12-120.080000
832019-12-110.260000