f/overrides/event-backup/fgilx-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
2020-10-02,0.025000
2020-12-11,0.422000
2012-12-27,0.006000
2013-04-05,0.045000
2017-10-06,0.052000
2018-12-14,0.551000
2026-07-10,0.106000
2013-12-06,0.305000
2016-07-08,0.068000
2019-07-05,0.095000
2024-12-30,0.119000
2015-07-01,0.059000
2017-12-15,0.222000
2022-04-01,0.023000
2015-04-01,0.045000
2022-12-09,0.051000
2023-10-06,0.035000
2026-04-01,0.026000
2016-04-08,0.011000
2017-07-07,0.065000
2021-07-02,0.054000
2018-07-06,0.100000
2022-10-07,0.047000
2023-07-07,0.105000
2024-07-05,0.093000
2012-10-05,0.045000
2023-04-05,0.041000
2019-04-05,0.054000
2021-10-01,0.033000
2025-07-11,0.089000
2012-07-06,0.020000
2012-12-07,0.069000
2014-12-05,0.989000
2018-04-06,0.031000
2015-10-02,0.025000
2016-10-07,0.037000
2021-04-05,0.031000
2025-12-12,0.349000
2020-04-03,0.044000
2022-07-01,0.072000
2024-10-04,0.036000
2024-12-13,0.069000
2019-12-13,0.035000
2021-12-10,2.055000
2014-04-04,0.137000
2014-10-03,0.029000
2015-12-04,0.199000
2018-10-05,0.077000
2013-10-04,0.027000
2017-04-07,0.010000
2025-04-04,0.034000
2025-10-03,0.041000
2013-07-05,0.090000
2014-07-03,0.059000
2016-12-16,0.038000
2019-10-04,0.052000
2020-07-10,0.056000
2023-12-08,0.046000
2024-04-05,0.043000