f/overrides/event-backup/cut-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

477 B

1DateDividendsctime
22010-12-270.5942019-04-02 14:09:59
32012-12-240.2532019-04-02 14:09:59
42013-12-240.362019-04-02 14:09:59
52014-12-240.6852019-04-02 14:09:59
62015-12-240.3582019-04-02 14:09:59
72016-12-230.5152019-04-02 14:09:59
82018-12-240.8252019-04-02 14:09:59
92007-12-260.0842019-04-02 14:09:59
102008-12-240.4082019-04-02 14:09:59
112017-12-260.4992019-04-02 14:09:59
122009-12-240.0492019-04-02 14:09:59
132011-12-230.3872019-04-02 14:09:59