f/overrides/event-backup/ficgx-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

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Date,Dividends
2002-06-28,0.037000
2002-10-31,0.039000
2006-12-29,0.031000
2007-12-07,1.424000
2020-12-15,1.365000
2022-12-01,2.630000
2014-12-31,0.001000
2018-12-27,0.624000
2021-12-15,5.499000
2024-12-10,0.633000
2006-10-31,0.724000
2013-12-31,0.004000
2015-12-29,1.151000
2016-12-28,1.575000
2017-12-27,1.080000
2019-12-17,1.323000
2025-12-10,0.529000
2002-07-31,0.043000
2023-12-28,0.279000