f/overrides/event-backup/jhdrx-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

495 B

1DateDividends
22026-06-260.034000
32021-12-200.037000
42023-03-290.033000
52023-06-280.049000
62023-09-270.046000
72025-09-260.049000
82024-06-260.045000
92024-09-260.044000
102025-03-270.036000
112021-03-290.003000
122021-12-300.003000
132022-03-290.026000
142022-12-200.065000
152023-12-200.063000
162025-06-260.044000
172025-12-180.043000
182021-09-280.030000
192022-12-130.817000
202026-03-270.031000
212021-06-280.019000
222022-06-280.044000
232022-09-280.047000
242024-03-260.037000
252024-12-190.057000