f/overrides/event-backup/dfis-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

355 B

1DateDividends
22022-09-200.067000
32022-12-200.081000
42023-06-210.251000
52023-09-190.128000
62024-03-190.014000
72026-03-240.031000
82026-06-230.422000
92023-12-190.155000
102024-06-180.281000
112024-09-170.082000
122024-12-170.161000
132022-06-220.096000
142023-03-210.036000
152025-03-250.034000
162025-06-240.440000
172025-09-230.110000
182025-12-160.152000