f/overrides/event-backup/fgiax-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
2013-09-16,0.102000
2014-09-15,0.174000
2019-12-30,0.238000
2023-12-28,0.248000
2010-12-17,0.481000
2012-09-20,0.008000
2025-10-09,0.035000
2015-06-15,0.009000
2021-12-30,0.207000
2018-12-17,0.215000
2009-12-29,0.124000
2016-12-29,0.312000
2020-10-14,0.041000
2024-12-16,0.576000
2024-12-30,0.265000
2025-12-15,0.896000
2014-12-15,0.674000
2016-12-15,0.485000
2018-09-14,0.143000
2018-12-28,0.241000
2019-12-16,0.570000
2020-12-30,0.111000
2021-10-14,0.013000
2022-10-13,0.191000
2010-12-29,0.155000
2013-12-13,0.333000
2015-09-16,0.058000
2021-12-15,0.622000
2022-12-29,0.302000
2025-12-30,0.274000
2008-12-29,0.077000
2011-12-29,0.128000
2022-12-15,0.137000
2013-12-30,0.164000
2017-12-28,0.251000
2012-12-28,0.191000
2014-12-30,0.146000
2015-12-15,0.040000
2015-12-30,0.198000
2017-12-15,0.387000
2026-05-14,0.630000
2011-12-15,0.216000
2012-12-14,0.160000