f/overrides/event-backup/ffizx-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
22025-12-300.603000
32015-12-290.306000
42019-12-303.304000
52022-12-290.375000
62022-05-130.028000
72023-12-280.436000
82016-05-130.008000
92018-05-110.021000
102019-05-100.041000
112021-05-140.073000
122024-05-100.035000
132025-05-090.083000
142017-12-280.345000
152018-12-280.376000
162020-12-300.356000
172021-12-300.418000
182023-05-120.009000
192024-12-300.515000
202026-05-080.111000
212016-12-280.318000
222017-05-120.007000
232020-05-080.065000