f/overrides/event-backup/fxz-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

1.3 KiB

1DateDividends
22008-06-230.101000
32010-12-210.300000
42012-12-210.450000
52023-12-220.310000
62015-06-240.074000
72020-09-240.241000
82021-09-230.173000
92023-03-240.247000
102023-09-220.322000
112026-03-260.244000
122014-09-230.115000
132019-03-210.080000
142025-06-260.233000
152010-06-220.082000
162016-09-210.084000
172017-06-220.126000
182018-12-180.174000
192019-12-130.203000
202013-06-210.103000
212022-12-230.257000
222023-06-270.482000
232025-09-250.309000
242011-06-210.076000
252025-03-270.213000
262009-06-230.078000
272013-09-200.058000
282014-12-230.241000
292021-06-240.148000
302024-06-270.211000
312015-12-230.147000
322017-12-210.143000
332014-03-250.084000
342016-12-210.172000
352017-03-230.088000
362022-09-230.345000
372008-12-230.124000
382014-06-240.106000
392015-09-230.101000
402019-06-140.080000
412020-12-240.190000
422024-09-260.285000
432025-12-120.373000
442012-06-210.274000
452015-03-250.033000
462016-03-230.086000
472017-09-210.087000
482018-06-210.145000
492019-09-250.270000
502026-06-250.162000
512018-03-220.032000
522021-03-250.130000
532022-06-240.249000
542024-12-130.336000
552009-12-220.172000
562013-12-180.083000
572020-06-250.149000
582024-03-210.193000
592007-12-210.074000
602013-03-210.048000
612016-06-220.083000
622018-09-140.113000
632020-03-260.145000
642021-12-230.241000
652022-03-250.093000