f/overrides/event-backup/novix-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

817 B

1DateDividendsctime
22012-12-130.0262020-04-10 16:25:17
32013-12-120.8632020-04-10 16:25:17
42014-12-110.1692020-04-10 16:25:17
52015-12-110.0192020-04-10 16:25:17
62017-07-050.0262020-04-10 16:25:17
72016-07-060.0892020-04-10 16:25:17
82018-07-050.0032020-04-10 16:25:17
92015-07-010.0542020-04-10 16:25:17
102014-07-020.0192020-04-10 16:25:17
112019-10-020.0012020-04-10 16:25:17
122015-10-070.0672020-04-10 16:25:17
132016-10-050.0412020-04-10 16:25:17
142018-12-209.0512020-04-10 16:25:17
152014-10-010.0782020-04-10 16:25:17
162019-03-060.32020-04-10 16:25:17
172016-12-140.0372020-04-10 16:25:17
182017-12-130.0892020-04-10 16:25:17
192019-12-130.0012020-04-10 16:25:17
202017-04-050.0022020-04-10 16:25:17
212016-04-060.0572020-04-10 16:25:17
222015-04-090.042020-04-10 16:25:17