f/overrides/event-backup/chiq-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

455 B

1DateDividends
22020-06-290.017000
32024-12-300.374000
42025-06-270.124000
52015-12-290.591000
62017-12-280.116000
72018-12-280.352000
82019-12-300.142000
92020-12-300.022000
102023-06-290.031000
112013-12-270.149000
122014-12-290.263000
132016-12-280.169000
142019-06-270.051000
152012-12-270.167000
162022-12-290.016000
172026-06-290.094000
182024-06-270.130000
192025-12-300.191000
202010-12-290.190000
212011-12-280.056000
222022-06-290.061000
232023-12-280.367000