f/overrides/event-backup/eqrr-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

735 B

1DateDividends
22020-03-250.224000
32024-03-200.268000
42024-06-260.333000
52018-09-260.325000
62018-12-260.285000
72020-09-230.165000
82025-09-240.233000
92018-03-210.159000
102019-09-250.227000
112017-09-270.141000
122021-06-220.187000
132022-09-210.319000
142023-12-200.512000
152024-09-250.325000
162024-12-230.303000
172025-12-240.219000
182018-06-200.149000
192019-12-240.265000
202020-06-240.167000
212020-12-230.270000
222021-09-220.262000
232026-06-240.198000
242019-06-250.183000
252021-03-230.119000
262022-03-230.131000
272023-03-220.284000
282023-06-210.403000
292019-03-200.219000
302022-06-220.368000
312025-03-260.341000
322026-03-250.233000
332021-12-230.302000
342022-12-220.370000
352023-09-200.288000
362025-06-250.299000
372017-12-260.179000