f/overrides/event-backup/labcx-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
22022-09-260.057000
32014-06-190.012000
42022-06-240.055000
52019-03-260.046000
62020-03-250.027000
72020-12-180.039000
82023-09-260.094000
92014-03-200.057000
102018-12-190.095000
112015-09-290.047000
122018-06-260.057000
132019-09-250.049000
142022-03-240.042000
152011-12-290.114000
162012-09-200.038000
172021-06-240.014000
182024-03-250.101000
192015-03-300.114000
202017-09-280.028000
212011-03-240.026000
222016-03-300.056000
232013-09-240.078000
242014-09-230.051000
252017-12-200.051000
262018-03-260.044000
272018-09-250.056000
282019-06-250.057000
292024-09-260.090000
302013-03-210.025000
312015-12-210.071000
322013-12-180.001000
332016-06-300.018000
342012-06-210.058000
352012-12-240.086000
362026-03-250.104000
372019-12-180.042000
382021-09-240.029000
392014-12-180.128000
402023-03-240.069000
412017-03-290.061000
422011-06-230.057000
432013-06-200.049000
442017-06-280.046000
452020-06-240.039000
462020-09-240.026000
472023-06-260.085000
482025-09-260.080000
492012-03-220.027000
502015-06-250.043000
512023-12-190.167000
522025-03-250.088000
532025-06-260.095000
542025-12-220.101000
552011-09-220.057000
562021-03-240.019000
572022-12-210.119000
582016-12-200.059000
592021-12-210.049000
602026-06-250.108000
612024-06-260.103000
622024-12-200.145000