f/overrides/event-backup/hfxi-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

835 B

1DateDividends
22025-12-190.723000
32026-03-200.097000
42017-12-280.136000
52018-03-220.065000
62018-12-270.306000
72019-06-240.305000
82020-06-240.159000
92021-06-210.316000
102021-12-200.224000
112023-12-150.194000
122022-12-160.489000
132025-09-190.199000
142016-06-220.159000
152017-06-210.237000
162019-03-250.163000
172020-03-250.089000
182020-12-300.122000
192022-03-180.058000
202015-12-290.141000
212016-09-220.068000
222018-09-210.095000
232019-09-240.132000
242024-12-200.260000
252020-09-240.084000
262026-06-180.227000
272017-03-230.072000
282021-03-220.106000
292022-06-170.330000
302023-09-150.110000
312024-03-150.032000
322024-06-210.333000
332019-12-300.093000
342022-09-160.115000
352023-03-170.137000
362024-09-200.073000
372016-12-280.336000
382017-09-220.108000
392018-06-210.321000
402021-09-200.130000
412023-06-160.178000
422025-06-200.438000