f/overrides/event-backup/ews-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
22010-06-230.234000
32016-12-210.662000
42018-12-180.444000
52021-12-131.003000
62022-06-090.276000
71996-08-260.072000
82013-06-270.474000
92013-12-180.518000
102017-06-200.257000
112023-12-200.534000
122024-12-170.584000
132026-06-150.516000
142000-12-200.232000
152015-12-210.504000
162017-12-190.641000
172008-06-250.266000
182002-12-230.156000
192008-12-230.576000
202000-08-240.344000
212014-12-170.494000
222025-06-160.459000
232012-06-210.392000
242003-12-220.238000
252003-12-160.140000
262011-06-220.378000
272007-12-201.018000
282009-06-230.130000
292014-06-250.382000
302024-06-110.351000
312005-12-230.580000
322009-12-220.514000
332012-12-180.692000
342018-06-190.486000
352020-06-150.219000
362006-12-200.618000
371999-08-250.118000
382019-06-170.452000
391998-08-250.114000
402001-12-240.080000
412016-06-220.128000
422021-06-100.280000
432001-08-240.064000
442023-06-070.680000
452025-12-160.668000
462022-12-130.205000
472010-12-210.612000
481997-12-230.020000
491999-12-210.186000
502015-06-250.360000
512019-12-160.682000
522020-12-140.357000
531997-08-250.108000
542004-12-230.552000
552011-12-200.554000
561998-12-220.126000