f/overrides/event-backup/hefa-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

615 B

1DateDividends
22024-12-200.470000
32014-07-020.611000
42018-12-280.291000
52021-07-020.481000
62023-07-030.554000
72016-07-060.492000
82017-12-280.310000
92019-12-030.669000
102025-12-020.432000
112015-12-020.236000
122019-12-240.353000
132021-12-230.601000
142025-12-230.748000
152016-12-280.256000
162019-07-020.616000
172020-12-240.263000
182025-07-020.639000
192017-07-060.446000
202018-12-040.312000
212022-12-230.113000
222014-12-260.243000
232024-07-020.604000
242026-07-020.691000
252022-07-050.784000
262023-12-220.396000
272015-07-020.461000
282015-12-280.201000
292018-07-030.580000
302020-07-020.377000
312022-12-025.890000