f/overrides/event-backup/ibhf-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
22023-03-010.131000
32024-10-010.136000
42024-12-020.134000
52021-05-030.105000
62021-09-010.096000
72021-12-010.094000
82023-09-010.141000
92023-11-010.145000
102025-12-010.147000
112022-08-010.113000
122023-02-010.133000
132024-07-010.138000
142025-03-030.125000
152020-12-170.156000
162021-06-010.098000
172021-07-010.096000
182021-08-020.092000
192024-09-030.139000
202021-03-010.093000
212023-05-010.144000
222023-12-010.137000
232024-12-180.130000
242022-04-010.107000
252023-04-030.142000
262023-08-010.138000
272023-10-020.137000
282024-11-010.132000
292026-05-010.111000
302021-02-010.098000
312022-05-020.104000
322026-03-020.113000
332026-07-010.083000
342023-06-010.144000
352024-03-010.140000
362025-06-020.129000
372023-07-030.143000
382024-06-030.142000
392024-08-010.137000
402021-04-010.097000
412022-12-150.133000
422024-04-010.140000
432021-10-010.100000
442023-12-140.144000
452024-05-010.149000
462025-02-030.128000
472025-09-020.133000
482025-11-030.128000
492022-03-010.102000
502022-10-030.121000
512022-12-010.113000
522026-02-020.117000
532026-08-030.088000
542022-02-010.103000
552022-07-010.107000
562025-04-010.129000
572025-08-010.131000
582025-10-010.126000
592022-06-010.104000
602022-09-010.117000
612025-12-190.120000
622026-04-010.115000
632026-06-010.108000
642021-11-010.096000
652021-12-160.091000
662022-11-010.119000
672024-02-010.144000
682025-05-010.130000
692025-07-010.130000