f/overrides/event-backup/fltfx-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
2021-03-29,0.008000
2023-09-29,0.046000
2023-12-28,0.031000
2024-03-28,0.083000
2015-09-28,0.011000
2017-03-29,0.029000
2019-09-26,0.022000
2019-12-30,0.053000
2021-12-30,2.227000
2022-06-15,0.334000
2023-03-31,0.045000
2023-06-15,0.084000
2015-12-30,0.105000
2025-12-30,0.343000
2024-12-30,0.193000
2018-06-27,0.128000
2019-06-26,0.141000
2020-09-28,0.030000
2022-12-29,0.023000
2024-06-28,0.027000
2024-09-30,0.037000
2025-06-16,0.553000
2016-06-28,0.059000
2021-09-28,0.041000
2022-09-30,0.024000
2016-03-29,0.011000
2026-06-15,0.533000
2017-12-28,0.192000
2020-03-27,0.047000
2015-06-26,0.005000
2018-12-28,0.188000
2020-06-26,0.118000
2020-12-30,0.095000
2021-06-28,0.238000
2022-06-30,0.022000
2016-12-29,0.088000
2019-03-27,0.004000
2023-06-30,0.051000
2018-09-26,0.053000