f/overrides/event-backup/a-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

1.2 KiB

1DateDividends
22017-06-290.132000
32021-07-020.194000
42025-09-300.248000
52020-03-300.180000
62024-12-310.248000
72021-01-040.194000
82014-04-090.094421
92026-06-300.255000
102014-09-260.094421
112019-09-300.164000
122020-06-290.180000
132023-04-030.225000
142024-07-020.236000
152019-12-300.180000
162022-01-030.210000
172026-01-060.255000
182012-03-300.071531
192018-12-280.164000
202017-10-020.132000
212018-04-020.149000
222022-12-300.225000
232023-10-020.225000
242023-06-300.225000
252006-11-011.471388
262013-12-270.094421
272018-10-010.149000
282019-07-010.164000
292022-10-030.210000
302013-06-280.085837
312016-06-300.115000
322025-04-010.248000
332017-12-290.149000
342018-07-020.149000
352025-07-010.248000
362012-09-280.071531
372012-12-270.071531
382013-03-280.085837
392014-06-270.094421
402015-09-250.100000
412016-12-290.132000
422021-04-050.194000
432015-12-310.115000
442016-04-010.115000
452016-09-300.115000
462019-04-010.164000
472020-10-050.180000
482015-03-270.100000
492021-10-040.194000
502022-04-040.210000
512022-07-010.210000
522023-12-290.236000
532015-06-260.100000
542017-03-310.132000
552024-04-010.236000
562024-10-010.236000
572026-03-310.255000
582012-06-290.071531
592013-09-270.085837
602015-01-020.100000