f/overrides/event-backup/fhbrx-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
2018-08-10,0.035000
2019-06-10,0.035000
2020-12-10,0.040000
2024-02-12,0.029000
2017-11-10,0.036000
2019-10-10,0.035000
2022-11-10,0.032000
2023-10-10,0.031000
2023-11-10,0.032000
2025-02-10,0.028000
2026-07-10,0.039000
2022-10-10,0.033000
2022-03-10,0.028000
2024-06-10,0.031000
2025-10-10,0.032000
2020-05-11,0.034000
2025-04-10,0.031000
2025-05-12,0.032000
2026-06-10,0.033000
2025-09-10,0.033000
2019-09-10,0.035000
2021-11-10,0.031000
2022-04-11,0.031000
2021-01-11,0.027000
2024-10-10,0.032000
2020-09-10,0.033000
2023-06-12,0.034000
2026-04-10,0.033000
2019-03-11,0.032000
2020-06-10,0.034000
2020-07-10,0.032000
2017-10-10,0.035000
2022-09-12,0.032000
2024-12-10,0.039000
2019-12-10,0.044000
2020-08-10,0.032000
2025-06-10,0.032000
2018-02-12,0.032000
2023-09-11,0.032000
2026-08-10,0.033000
2026-02-10,0.029000
2018-11-12,0.036000
2018-12-10,0.045000
2021-03-10,0.027000
2022-02-10,0.028000
2025-03-10,0.028000
2025-07-10,0.033000
2026-01-12,0.032000
2026-03-10,0.029000
2019-04-10,0.035000
2019-05-10,0.035000
2020-10-12,0.032000
2021-04-12,0.031000
2021-07-12,0.031000
2024-01-10,0.030000
2017-12-11,0.046000
2021-09-10,0.031000
2022-06-10,0.031000
2018-04-10,0.035000
2021-02-10,0.028000
2021-05-10,0.030000
2021-10-11,0.030000
2018-07-10,0.035000
2019-02-11,0.032000
2020-11-10,0.031000
2025-01-10,0.031000
2021-06-10,0.031000
2022-08-10,0.031000
2023-02-10,0.030000
2023-05-10,0.033000
2024-04-10,0.032000
2024-09-10,0.033000
2019-11-11,0.034000
2020-02-10,0.032000
2022-05-10,0.031000
2023-07-10,0.033000
2022-01-10,0.029000
2018-09-10,0.035000
2023-04-10,0.033000
2024-03-11,0.029000
2019-01-10,0.032000
2019-08-12,0.035000
2023-08-10,0.031000
2018-06-11,0.035000
2018-10-10,0.035000
2019-07-10,0.035000
2017-09-11,0.035000
2021-12-10,0.040000
2023-01-10,0.030000
2024-11-11,0.032000
2024-07-10,0.032000
2025-11-10,0.032000
2025-08-11,0.032000
2025-12-10,0.042000
2026-05-11,0.033000
2018-01-10,0.031000
2018-03-12,0.032000
2023-12-11,0.041000
2024-05-10,0.031000
2018-05-10,0.035000
2020-04-13,0.035000
2021-08-10,0.031000
2022-07-11,0.032000
2023-03-10,0.028000
2024-08-12,0.032000
2022-12-12,0.042000
2020-01-10,0.031000
2020-03-10,0.031000