f/overrides/event-backup/flerx-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
2016-03-29,0.006000
2022-06-15,0.303000
2024-06-28,0.081000
2025-06-16,0.268000
2014-06-26,0.056000
2015-06-26,0.153000
2019-09-26,0.056000
2016-12-29,0.109000
2018-12-28,0.272000
2018-09-26,0.061000
2020-09-28,0.053000
2024-03-28,0.118000
2025-12-30,0.618000
2014-12-30,0.216000
2015-12-30,0.180000
2021-06-28,0.196000
2021-12-30,1.805000
2022-09-30,0.058000
2015-03-27,0.004000
2017-03-29,0.079000
2021-09-28,0.067000
2023-12-28,0.043000
2019-06-26,0.195000
2020-03-27,0.042000
2020-06-26,0.189000
2021-03-29,0.017000
2024-09-30,0.077000
2024-12-30,0.109000
2017-09-27,0.088000
2018-06-27,0.062000
2019-12-30,0.116000
2020-12-30,0.118000
2022-12-29,0.039000
2023-09-29,0.075000
2026-06-15,0.360000
2016-06-28,0.100000
2018-03-27,0.048000
2022-06-30,0.061000
2023-03-31,0.099000
2023-06-30,0.080000
2017-12-28,0.093000
2019-03-27,0.036000