f/overrides/event-backup/fgorx-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
2022-04-26,0.013000
2023-08-28,0.014000
2026-05-26,0.016000
2014-04-30,0.021000
2022-03-28,0.013000
2021-10-29,0.013000
2017-04-28,0.017000
2017-11-30,0.017000
2024-02-26,0.015000
2026-06-25,0.016000
2013-12-30,0.022000
2015-07-31,0.019000
2021-08-31,0.011000
2021-09-30,0.013000
2025-11-24,0.016000
2026-04-27,0.016000
2018-04-30,0.017000
2018-07-31,0.017000
2017-06-30,0.017000
2019-08-30,0.016000
2020-02-28,0.016000
2025-04-25,0.015000
2013-09-30,0.021000
2015-02-27,0.020000
2019-12-30,0.016000
2021-04-30,0.013000
2024-01-26,0.014000
2025-07-28,0.016000
2015-11-30,0.019000
2016-04-29,0.018000
2020-12-30,0.013000
2024-07-26,0.016000
2014-11-28,0.019000
2016-03-31,0.018000
2016-06-30,0.018000
2020-03-31,0.016000
2023-06-27,0.014000
2025-12-26,0.016000
2026-03-26,0.016000
2014-06-30,0.020000
2014-09-30,0.020000
2020-05-29,0.015000
2022-05-25,0.013000
2024-05-28,0.015000
2019-03-29,0.016000
2019-11-29,0.015000
2016-10-31,0.018000
2018-06-29,0.017000
2015-10-30,0.019000
2016-05-31,0.018000
2018-09-28,0.017000
2023-01-26,0.014000
2023-03-28,0.013000
2025-06-25,0.016000
2013-11-29,0.022000
2014-12-30,0.020000
2018-10-31,0.017000
2023-11-27,0.014000
2025-03-26,0.015000
2015-01-30,0.020000
2016-09-30,0.017000
2016-11-30,0.017000
2021-12-30,0.013000
2024-08-27,0.016000
2025-10-28,0.016000
2015-05-29,0.018000
2015-12-30,0.019000
2016-12-29,0.018000
2018-02-28,0.017000
2019-02-28,0.017000
2019-10-31,0.016000
2022-11-25,0.015000
2023-12-26,0.014000
2024-03-25,0.015000
2013-07-31,0.021000
2016-01-29,0.018000
2022-01-26,0.013000
2026-07-28,0.016000
2018-11-30,0.017000
2019-01-31,0.017000
2022-09-27,0.013000
2026-02-24,0.016000
2017-02-28,0.018000
2020-09-30,0.013000
2017-12-28,0.017000
2019-04-30,0.016000
2019-07-31,0.016000
2020-11-30,0.013000
2021-07-30,0.014000
2024-12-26,0.016000
2015-03-31,0.019000
2016-08-31,0.017000
2020-04-30,0.015000
2020-06-30,0.016000
2021-06-30,0.013000
2023-04-25,0.014000
2023-10-26,0.014000
2014-03-31,0.021000
2018-03-29,0.017000
2018-05-31,0.017000
2022-08-26,0.013000
2022-07-26,0.013000
2024-06-25,0.016000
2015-04-30,0.020000
2017-10-31,0.016000
2020-01-31,0.016000
2024-04-25,0.015000
2021-11-30,0.012000
2017-05-31,0.018000
2020-08-31,0.014000
2023-02-23,0.014000
2013-10-31,0.022000
2014-02-28,0.021000
2019-06-28,0.016000
2020-07-31,0.015000
2022-10-26,0.013000
2023-09-26,0.015000
2014-10-31,0.020000
2015-06-30,0.019000
2021-01-29,0.012000
2025-08-26,0.016000
2018-01-31,0.017000
2019-05-31,0.016000
2019-09-30,0.017000
2021-05-28,0.012000
2022-12-27,0.013000
2014-07-31,0.020000
2015-09-30,0.019000
2014-08-29,0.020000
2015-08-31,0.019000
2017-03-31,0.017000
2020-10-30,0.013000
2024-09-25,0.016000
2025-01-28,0.016000
2013-08-30,0.022000
2014-01-31,0.021000
2025-05-23,0.016000
2021-03-31,0.014000
2023-07-26,0.014000
2024-10-28,0.018000
2024-11-25,0.014000
2016-02-29,0.018000
2016-07-29,0.017000
2018-12-28,0.017000
2022-06-27,0.013000
2025-02-25,0.016000
2025-09-25,0.016000
2014-05-30,0.020000
2017-09-29,0.017000
2022-02-23,0.013000
2023-05-25,0.014000
2017-07-31,0.017000
2018-08-31,0.017000
2021-02-26,0.012000
2026-01-27,0.016000
2017-01-31,0.018000
2017-08-31,0.017000