f/overrides/event-backup/alsrx-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

335 B

1DateDividends
22000-06-271.478000
32013-12-185.739000
42017-12-150.579000
52019-12-183.801000
61998-07-061.569000
72011-12-201.133000
82014-12-185.257000
92024-12-120.171000
101997-06-242.904000
112018-12-182.743000
122020-12-161.550000
132021-12-155.364000
141999-06-282.077000
152012-12-183.230000
162015-12-167.635000
172025-12-170.491000