f/overrides/event-backup/nuhy-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

1.6 KiB

1DateDividends
22023-02-010.105000
32021-08-020.088000
42025-12-180.134000
52026-08-030.124000
62024-08-010.111000
72025-05-010.115000
82025-07-010.106000
92020-09-010.108000
102021-05-030.099000
112022-11-010.140000
122023-06-010.120000
132025-08-010.120000
142026-02-020.110000
152024-11-010.124000
162020-07-010.073000
172021-10-010.106000
182023-05-010.110000
192023-11-010.119000
202024-05-010.106000
212024-12-180.133000
222020-04-010.125000
232022-09-010.099000
242022-12-150.122000
252021-04-010.099000
262022-05-020.101000
272024-04-010.130000
282025-11-030.119000
292020-02-030.103000
302020-05-010.107000
312021-02-010.080000
322022-04-010.101000
332022-07-010.110000
342024-12-020.106000
352025-10-010.119000
362021-09-010.096000
372021-12-160.120000
382022-02-010.091000
392023-12-010.121000
402023-12-140.148000
412025-02-030.111000
422025-04-010.126000
432026-04-010.121000
442019-12-020.107000
452019-12-270.107000
462023-04-030.114000
472023-08-010.119000
482024-03-010.106000
492020-12-010.110000
502021-11-010.102000
512022-03-010.088000
522025-09-020.120000
532026-07-010.121000
542022-06-010.104000
552022-08-010.107000
562023-10-020.110000
572025-03-030.107000
582019-11-010.133000
592020-10-010.109000
602023-09-010.123000
612022-12-010.115000
622024-06-030.123000
632025-06-020.122000
642020-06-010.097000
652020-12-170.120000
662021-06-010.099000
672023-03-010.096000
682024-02-010.112000
692026-03-020.109000
702026-05-010.123000
712021-03-010.097000
722021-07-010.106000
732022-10-030.111000
742024-07-010.107000
752024-09-030.117000
762024-10-010.117000
772026-06-010.124000
782020-08-030.111000
792020-11-020.096000
802021-12-010.099000
812023-07-030.114000
822025-12-010.110000