f/overrides/event-backup/acvvx-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

516 B

1DateDividendsctime
22016-12-130.2832017-10-31 12:25:21
32012-12-070.3382017-10-31 12:25:21
42013-12-060.2022017-10-31 12:25:21
52015-12-080.1672017-10-31 12:25:21
62014-12-090.1962017-10-31 12:25:21
72019-12-200.0632020-04-15 13:22:12
82017-12-120.2382020-04-15 13:22:12
92018-12-110.5142020-04-15 13:22:12
102016-12-130.2832020-04-15 13:22:12
112012-12-070.3382020-04-15 13:22:12
122013-12-060.2022020-04-15 13:22:12
132015-12-080.1672020-04-15 13:22:12
142014-12-090.1962020-04-15 13:22:12