f/overrides/event-backup/eiia-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

455 B

1DateDividends
22025-10-140.169000
32025-12-110.169000
42026-04-100.169000
52026-05-110.169000
62026-06-100.169000
72025-07-110.169000
82025-02-100.169000
92025-05-120.169000
102025-09-100.169000
112026-02-090.169000
122026-07-130.169000
132024-12-110.169000
142025-06-100.169000
152025-08-110.169000
162025-11-100.169000
172026-01-120.169000
182026-03-110.169000
192026-08-110.169000
202025-04-100.169000
212025-01-130.169000
222025-03-110.169000
232024-11-120.243000