f/overrides/event-backup/htrb-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
2024-10-30,0.125000
2025-12-30,0.247000
2018-05-21,0.060000
2018-07-23,0.060000
2019-06-27,0.140000
2019-11-27,0.093000
2022-10-27,0.075000
2024-09-27,0.110000
2018-12-20,0.124000
2021-03-30,0.074000
2021-12-17,0.709000
2022-02-25,0.071000
2023-01-27,0.083000
2026-02-27,0.117000
2020-03-30,0.103000
2021-07-29,0.074000
2023-12-28,0.163000
2026-06-29,0.133000
2018-09-21,0.071000
2019-05-23,0.115000
2019-12-30,1.319000
2022-11-29,0.098000
2023-02-27,0.091000
2023-03-30,0.111000
2021-11-29,0.078000
2022-01-28,0.064000
2022-03-30,0.081000
2023-07-28,0.100000
2024-02-27,0.110000
2025-05-29,0.117000
2026-03-30,0.125000
2019-01-24,0.076000
2020-01-30,0.074000
2022-09-29,0.110000
2024-04-26,0.119000
2025-02-27,0.118000
2025-03-28,0.124000
2018-03-22,0.075000
2020-07-30,0.087000
2022-06-29,0.097000
2023-08-30,0.117000
2024-01-29,0.105000
2025-10-30,0.126000
2022-08-30,0.105000
2023-04-27,0.096000
2019-03-25,0.100000
2019-08-29,0.128000
2019-09-27,0.107000
2019-10-30,0.113000
2020-02-27,0.096000
2022-07-28,0.097000
2023-09-28,0.105000
2024-11-27,0.112000
2026-04-29,0.122000
2021-04-29,0.076000
2024-05-30,0.135000
2024-06-27,0.114000
2024-12-31,0.195000
2026-01-30,0.098000
2026-07-30,0.132000
2021-05-27,0.070000
2021-10-28,0.071000
2024-08-29,0.116000
2023-10-27,0.108000
2024-03-27,0.115000
2018-10-22,0.101000
2018-11-20,0.072000
2020-05-28,0.087000
2021-09-29,0.083000
2021-12-30,0.137000
2022-05-27,0.082000
2025-06-27,0.118000
2025-09-29,0.129000
2020-09-10,0.852000
2022-04-28,0.077000
2023-06-29,0.121000
2025-08-28,0.117000
2018-06-21,0.098000
2019-02-25,0.107000
2022-12-29,0.057000
2024-07-30,0.129000
2025-01-30,0.116000
2025-07-30,0.133000
2018-02-22,0.062000
2018-04-23,0.099000
2018-08-21,0.099000
2023-11-28,0.122000
2025-11-26,0.110000
2019-04-24,0.117000
2020-11-27,0.081000
2021-01-28,0.063000
2025-04-29,0.138000
2026-05-28,0.116000
2019-07-30,0.121000
2020-06-29,0.095000
2021-02-25,0.076000
2021-06-29,0.083000
2021-08-30,0.083000
2023-05-26,0.098000