f/overrides/event-backup/aacdx-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

1.1 KiB

1DateDividends
22025-09-250.024000
32015-12-220.317000
42018-09-180.032000
52018-12-310.038000
62024-12-200.302000
72021-09-280.044000
82021-12-280.456000
92023-06-270.052000
102023-09-260.029000
112015-12-280.034000
122019-03-190.014000
132014-12-230.021000
142017-12-260.036000
152025-12-190.237000
162013-12-230.028000
172014-06-100.019000
182015-03-170.001000
192016-06-210.029000
202017-09-190.025000
212013-09-100.020000
222016-12-200.089000
232019-12-200.418000
242020-06-230.024000
252022-06-280.041000
262015-03-100.005000
272020-09-290.022000
282023-03-280.017000
292016-09-200.016000
302024-09-240.051000
312018-06-190.033000
322022-12-280.166000
332018-03-200.009000
342016-12-270.039000
352022-09-270.020000
362026-03-120.008000
372018-12-200.038000
382020-12-290.213000
392014-09-090.021000
402017-06-200.033000
412017-12-190.284000
422019-06-180.033000
432021-03-300.010000
442022-03-290.031000
452024-03-260.015000
462026-06-110.052000
472013-12-170.369000
482014-03-110.009000
492019-09-170.030000
502021-06-290.039000
512024-06-250.037000
522014-12-160.343000
532018-12-180.290000
542023-12-210.054000
552025-03-270.027000
562025-06-260.042000