f/overrides/event-backup/lcefx-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
2014-09-18,0.084000
2015-03-19,0.085000
2021-12-14,3.344000
2025-12-11,2.123000
2015-06-18,0.085000
2017-06-15,0.092000
2019-06-20,0.136000
2024-09-26,0.090000
2013-03-21,0.073000
2019-12-13,0.715000
2026-03-26,0.079000
2026-06-25,0.079000
2016-06-16,0.085000
2017-03-16,0.091000
2020-06-18,0.134000
2020-09-17,0.127000
2023-06-22,0.101000
2021-03-25,0.127000
2023-09-28,0.101000
2014-06-19,0.079000
2014-12-12,0.466000
2017-09-14,0.104000
2023-03-23,0.101000
2024-03-28,0.094000
2020-03-19,0.134000
2013-06-20,0.078000
2025-03-27,0.080000
2022-06-23,0.110000
2025-09-25,0.080000
2021-09-23,0.128000
2023-12-13,1.147000
2014-03-20,0.077000
2016-03-17,0.084000
2016-09-15,0.090000
2018-09-13,0.126000
2021-06-24,0.129000
2015-09-17,0.084000
2015-12-11,0.857000
2016-12-13,0.601000
2019-03-21,0.136000
2022-09-22,0.109000
2022-12-14,1.883000
2013-09-19,0.078000
2017-12-13,0.307000
2022-03-24,0.110000
2018-12-14,1.077000
2019-09-19,0.136000
2024-12-12,1.935000
2012-12-07,0.294000
2013-12-13,0.238000
2018-06-21,0.126000
2020-12-11,0.430000
2025-06-26,0.080000
2018-03-22,0.104000
2024-06-27,0.090000