f/overrides/event-backup/iedi-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

675 B

1DateDividends
22021-12-130.084000
32023-12-200.176000
42024-03-210.090000
52025-06-160.149000
62025-12-160.137000
72018-12-170.194000
82019-06-170.091000
92019-03-200.084000
102023-09-260.113000
112026-03-170.116000
122020-06-150.072000
132024-06-110.141000
142021-09-240.090000
152022-09-260.108000
162023-06-070.105000
172024-09-250.138000
182024-12-170.110000
192020-09-230.055000
202020-12-140.108000
212025-09-160.130000
222021-06-100.082000
232023-03-230.106000
242022-06-090.095000
252022-12-130.782000
262018-06-260.094000
272021-03-250.084000
282020-03-250.100000
292019-09-240.074000
302019-12-160.244000
312025-03-180.109000
322026-06-150.143000
332018-09-260.096000
342022-03-240.108000