f/overrides/event-backup/ewa-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
22010-12-210.627000
32014-06-250.393000
42018-06-190.432000
52021-12-130.667000
62023-06-070.417000
71997-08-250.329000
81999-12-210.017000
92001-08-240.190000
102007-12-201.277000
112009-06-230.048000
122020-06-150.284000
132012-06-210.456000
142000-12-200.032000
152008-12-230.890000
162019-12-160.456000
172010-06-230.203000
182018-12-180.745000
192021-06-100.376000
201999-08-250.235000
212015-06-250.530000
222001-12-240.040000
232024-06-110.469000
241996-08-260.187000
252005-12-230.667000
262009-12-220.615000
272017-06-200.470000
282025-06-160.397000
292025-12-160.444000
302004-12-230.575000
312012-12-180.895000
322016-06-220.276000
332020-12-140.200000
341998-08-250.167000
352000-08-240.233000
362002-12-230.265000
372006-12-201.100000
382013-12-270.024000
392015-12-210.509000
401996-12-230.115000
412022-12-130.430000
422003-12-160.270000
432011-12-200.652000
442013-12-180.576000
452017-12-190.559000
462019-06-170.443000
472021-12-300.219000
482016-12-210.540000
492023-12-200.488000
501997-12-230.063000
512003-12-220.430000
522011-06-220.435000
532013-06-270.542000
541998-12-220.016000
552026-06-150.405000
562014-12-170.697000
572022-06-090.743000
582024-12-170.417000