f/overrides/event-backup/npfd-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
22022-09-140.138000
32026-06-150.157000
42024-01-110.094000
52026-02-130.157000
62026-04-150.157000
72026-05-150.157000
82022-10-130.120000
92023-07-130.087000
102025-02-140.168000
112025-04-150.168000
122024-02-140.120000
132024-03-140.120000
142024-12-130.168000
152026-08-140.157000
162022-02-140.138000
172023-05-120.087000
182023-09-140.087000
192025-12-150.157000
202023-06-140.087000
212024-08-150.168000
222024-11-150.168000
232022-07-140.138000
242022-08-120.138000
252024-04-120.120000
262024-10-150.168000
272025-01-150.168000
282025-03-140.168000
292025-05-150.168000
302025-06-130.168000
312025-07-150.168000
322022-12-140.120000
332023-12-140.094000
342022-03-140.138000
352022-04-130.138000
362022-11-140.120000
372024-05-140.120000
382025-09-150.168000
392022-05-120.138000
402022-06-140.138000
412024-07-150.168000
422023-03-140.096000
432023-08-140.087000
442026-01-150.157000
452023-02-140.096000
462023-11-140.087000
472023-04-130.087000
482024-09-130.168000
492025-11-140.168000
502026-03-130.157000
512026-07-150.157000
522024-06-140.168000
532025-08-150.168000
542025-10-150.168000
552023-01-120.096000
562023-10-120.087000