f/overrides/event-backup/dfau-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
22025-09-230.120000
32021-06-220.077000
42022-06-220.090000
52023-06-210.103000
62023-12-190.134000
72024-06-180.103000
82025-03-250.090000
92021-03-230.051000
102021-09-210.081000
112021-12-160.121000
122024-03-190.077000
132026-06-230.120000
142020-12-170.033000
152022-03-220.072000
162025-06-240.115000
172025-12-160.120000
182024-09-170.109000
192024-12-170.156000
202026-03-240.110000
212022-09-200.104000
222022-12-200.113000
232023-03-210.088000
242023-09-190.105000