f/overrides/event-backup/bgb-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
2022-10-21,0.077000
2015-04-21,0.105000
2017-12-28,0.105000
2018-08-23,0.105000
2019-12-20,0.105000
2020-06-22,0.094000
2013-03-14,0.117000
2013-11-14,0.117000
2017-03-22,0.105000
2019-09-20,0.111000
2024-10-24,0.093000
2017-11-21,0.105000
2018-02-20,0.105000
2020-11-19,0.080000
2020-12-22,0.073000
2026-06-23,0.076000
2015-12-21,0.105000
2017-12-20,0.105000
2019-02-20,0.110000
2019-07-23,0.114000
2024-04-22,0.093000
2023-08-23,0.094000
2025-07-24,0.089000
2017-04-19,0.105000
2018-07-23,0.105000
2021-03-23,0.071000
2022-06-22,0.067000
2022-11-21,0.077000
2013-02-13,0.117000
2021-07-22,0.072000
2024-08-23,0.101000
2024-12-23,0.178000
2025-12-31,0.077000
2013-01-16,0.117000
2014-12-19,0.105000
2021-09-22,0.072000
2023-12-28,0.094000
2025-04-23,0.089000
2020-03-23,0.102000
2021-06-22,0.072000
2023-05-22,0.088000
2013-05-15,0.117000
2013-07-16,0.117000
2014-04-21,0.105000
2020-07-23,0.094000
2026-08-24,0.076000
2014-03-20,0.105000
2018-03-21,0.105000
2018-10-23,0.105000
2020-04-22,0.102000
2022-07-21,0.067000
2016-02-18,0.105000
2017-05-19,0.105000
2020-05-20,0.102000
2021-08-23,0.072000
2024-09-23,0.093000
2023-03-23,0.088000
2023-12-20,0.094000
2026-04-23,0.079000
2013-04-17,0.117000
2015-05-19,0.105000
2018-04-20,0.105000
2018-12-20,0.110000
2021-10-21,0.072000
2026-05-21,0.079000
2013-06-13,0.117000
2021-11-19,0.072000
2023-01-23,0.085000
2025-08-22,0.089000
2021-02-18,0.073000
2024-05-22,0.093000
2024-06-21,0.101000
2014-02-19,0.117000
2016-06-21,0.105000
2017-02-16,0.105000
2019-10-23,0.111000
2020-08-21,0.094000
2025-05-22,0.089000
2025-10-24,0.078000
2013-09-18,0.117000
2017-10-23,0.105000
2018-05-22,0.105000
2019-12-30,0.120000
2020-12-30,0.089000
2013-10-16,0.117000
2017-09-21,0.105000
2021-12-30,0.110000
2023-07-21,0.094000
2022-12-21,0.085000
2023-10-23,0.102000
2025-12-23,0.077000
2014-07-22,0.105000
2014-09-19,0.105000
2018-12-28,0.346000
2021-12-22,0.066000
2022-09-22,0.077000
2026-02-20,0.077000
2014-05-20,0.105000
2014-08-20,0.105000
2019-06-20,0.114000
2021-05-20,0.071000
2022-08-23,0.067000
2022-04-21,0.065000
2023-11-21,0.102000
2025-03-24,0.089000
2025-11-20,0.078000
2015-11-18,0.105000
2016-07-20,0.105000
2017-07-20,0.105000
2019-05-22,0.109000
2019-11-21,0.111000
2026-03-24,0.079000
2014-01-22,0.117000
2015-02-18,0.105000
2015-09-21,0.105000
2024-02-21,0.094000
2024-07-24,0.101000
2018-11-21,0.105000
2023-06-22,0.094000
2024-03-20,0.093000
2016-08-22,0.105000
2022-02-17,0.066000
2026-07-24,0.076000
2016-04-20,0.105000
2018-09-20,0.105000
2023-02-17,0.085000
2023-09-21,0.102000
2025-09-23,0.078000
2014-06-19,0.105000
2015-12-29,0.105000
2016-09-21,0.105000
2020-09-22,0.080000
2022-05-20,0.065000
2022-03-23,0.065000
2013-12-19,0.117000
2015-08-20,0.105000
2016-05-19,0.105000
2019-03-21,0.109000
2019-04-22,0.109000
2014-10-22,0.105000
2016-11-18,0.105000
2020-10-22,0.080000
2025-06-23,0.089000
2015-07-22,0.105000
2015-10-21,0.105000
2018-06-21,0.105000
2019-08-22,0.114000
2020-02-20,0.105000
2025-02-21,0.089000
2013-08-15,0.117000
2015-03-20,0.105000
2015-06-19,0.105000
2016-10-20,0.105000
2021-04-22,0.071000
2023-04-20,0.088000
2024-11-21,0.093000
2014-11-18,0.105000
2015-01-21,0.105000
2016-03-21,0.105000
2017-06-21,0.105000
2017-08-22,0.105000
2012-12-14,0.117000
2016-12-20,0.105000
2016-12-28,0.189000