f/overrides/event-backup/fivg-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

595 B

1DateDividends
22019-09-170.073551
32024-06-260.109012
42021-03-240.057925
52022-06-220.163498
62025-03-260.076845
72025-12-290.101180
82026-06-240.110705
92020-09-220.081600
102020-12-290.100442
112022-09-210.102950
122023-12-270.121182
132025-09-240.073961
142019-12-260.061600
152021-06-230.117049
162021-09-220.086876
172024-12-270.092381
182022-03-230.091638
192022-12-280.129785
202023-06-210.167323
212024-03-200.082993
222019-06-240.060652
232020-06-230.098676
242025-06-250.102366
252021-12-290.226878
262023-03-220.086293
272023-09-200.126457
282024-09-250.093424
292020-03-240.052762
302026-03-250.095787