f/overrides/event-backup/fxh-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
2010-12-21,0.029000
2011-06-21,0.032000
2023-06-27,0.038000
2023-12-22,0.130000
2024-12-13,0.090000
2024-09-26,0.126000
2012-12-21,0.124000
2013-06-21,0.005000
2022-12-23,0.121000
2023-03-24,0.044000
2023-09-22,0.033000
2025-06-26,0.062000
2025-09-25,0.582000
2025-12-12,0.140000
2026-06-25,0.118000
2026-03-26,0.186000
2012-06-21,0.017000
2022-09-23,0.101000
2024-03-21,0.106000
2024-06-27,0.109000
2025-03-27,0.067000