f/overrides/event-backup/ivnqx-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

475 B

1DateDividends
22023-06-220.040000
32024-06-270.060000
42024-12-120.153000
52025-03-270.060000
62021-09-230.029000
72022-03-240.029000
82022-12-140.060000
92023-03-230.040000
102025-12-110.493000
112022-06-230.035000
122023-12-130.067000
132024-03-280.040000
142025-09-250.060000
152026-06-250.060000
162021-06-240.029000
172024-09-260.060000
182025-06-260.060000
192026-03-260.060000
202023-09-280.040000
212020-12-110.051000
222021-03-250.029000
232021-12-140.196000
242022-09-220.040000