f/overrides/event-backup/arfvx-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

435 B

1DateDividends
22014-12-300.583000
32015-12-300.812000
42016-12-290.473000
52022-12-280.821000
62010-12-300.117000
72011-12-290.159000
82019-12-301.180000
92023-12-210.271000
102017-12-280.185000
112018-12-310.307000
122020-12-290.979000
132021-12-281.197000
142024-12-200.719000
152010-04-300.042000
162012-12-280.233000
172013-12-300.384000
182017-10-190.244000
192018-12-270.999000
202025-12-192.117000
212008-12-300.071000
222009-12-300.079000