f/overrides/event-backup/jaflx-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

1.1 KiB

1DateDividends
21995-12-280.300000
32006-06-290.298000
42008-06-270.259000
52014-12-080.179000
62012-06-270.502000
72021-12-090.107000
82025-06-120.265000
92004-12-300.406000
102026-06-160.265000
112011-12-090.216000
122015-06-190.214000
132003-06-270.294000
142007-06-280.261000
152017-12-110.159000
162022-06-150.330000
172011-06-291.024000
182021-06-100.477000
192023-12-140.222000
201996-12-300.350000
212005-12-290.252000
222010-12-100.213000
232016-06-210.181000
241996-06-270.321000
251997-12-300.300000
262009-12-110.283000
272018-06-220.192000
281998-06-290.370000
292007-12-270.291000
302013-06-260.633000
312016-12-120.159000
322004-06-290.322000
332010-06-290.642000
342019-06-100.224000
352024-06-130.234000
362012-12-070.186000
372015-12-070.125000
382019-12-090.169000
391994-06-290.100000
402008-12-290.260000
412024-12-120.262000
422020-06-110.218000
432022-12-080.142000
441993-12-300.100000
452006-12-280.285000
462013-12-090.118000
472014-06-190.242000
481994-12-290.300000
492003-12-300.300000
502009-06-190.278000
512025-12-110.265000
522018-12-100.169000
532020-12-100.148000
542023-06-210.207000
551995-06-290.300000
561997-06-270.344000
572005-06-290.770000
582017-06-280.190000