f/overrides/event-backup/bkf-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

919 B

1DateDividendsctime
22008-12-290.0452017-08-24 15:39:34
32015-12-210.5453992017-08-24 15:39:34
42017-06-200.1562017-08-24 15:39:34
52009-12-290.0252017-08-24 15:39:34
62014-06-250.4784822017-08-24 15:39:34
72016-06-220.1913662017-08-24 15:39:34
82016-12-210.3873032017-08-24 15:39:34
92010-12-290.0362017-08-24 15:39:34
102012-12-270.0222017-08-24 15:39:34
112013-06-270.6775792017-08-24 15:39:34
122015-06-250.3776092017-08-24 15:39:34
132008-12-230.3362017-08-24 15:39:34
142009-06-230.1622017-08-24 15:39:34
152009-12-220.2122017-08-24 15:39:34
162010-12-210.4152017-08-24 15:39:34
172011-12-200.2732017-08-24 15:39:34
182012-12-180.1632017-08-24 15:39:34
192011-06-220.5452017-08-24 15:39:34
202013-12-180.2275232017-08-24 15:39:34
212014-12-170.576552017-08-24 15:39:34
222008-06-250.1562017-08-24 15:39:34
232010-06-230.4032017-08-24 15:39:34
242012-06-210.6572017-08-24 15:39:34