f/overrides/event-backup/ndmo-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
22021-11-120.077000
32022-02-140.077000
42022-03-140.077000
52020-11-120.077000
62021-09-140.077000
72024-06-140.062000
82024-07-150.062000
92025-06-130.062000
102021-02-110.077000
112021-08-120.077000
122022-05-120.077000
132023-07-130.062000
142024-02-140.062000
152024-05-140.062000
162026-02-130.062000
172026-06-150.059000
182021-07-140.077000
192022-04-130.077000
202024-08-150.062000
212021-04-140.077000
222021-10-140.077000
232024-01-110.062000
242024-11-150.062000
252024-12-130.062000
262026-07-150.059000
272021-12-140.077000
282022-10-130.077000
292025-02-140.062000
302026-08-140.059000
312022-09-140.077000
322023-01-120.077000
332023-10-120.062000
342020-10-140.077000
352021-05-130.077000
362022-06-140.077000
372022-12-140.077000
382023-06-140.062000
392023-09-140.062000
402025-04-150.062000
412021-01-140.077000
422022-01-130.077000
432025-03-140.062000
442023-04-130.062000
452023-12-140.062000
462025-01-150.062000
472023-08-140.062000
482024-04-120.062000
492025-05-150.062000
502022-07-140.077000
512023-03-140.062000
522024-03-140.062000
532024-10-150.062000
542025-08-150.062000
552026-05-150.062000
562022-11-140.077000
572023-11-140.062000
582024-09-130.062000
592025-07-150.062000
602021-03-120.077000
612023-05-120.062000
622023-02-140.077000
632026-03-130.062000
642026-04-150.062000
652020-12-140.077000
662022-08-120.077000
672021-06-140.077000