f/overrides/event-backup/noanx-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

355 B

1DateDividends
22018-12-281.774000
32022-04-070.359000
42025-04-100.497000
52025-12-301.847000
62026-04-081.308000
72017-12-280.800000
82018-04-100.420000
92020-04-080.033000
102020-12-302.180000
112021-12-302.052000
122022-12-293.383000
132023-12-281.059000
142024-04-100.170000
152024-12-301.941000
162019-04-101.050000
172019-12-301.127000
182021-04-080.071000