f/overrides/event-backup/jpse-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
2019-03-20,0.044000
2019-06-25,0.128000
2023-09-19,0.182000
2023-12-19,0.323000
2024-03-19,0.089000
2026-06-23,0.167000
2018-06-26,0.087000
2019-09-24,0.101000
2022-06-21,0.119000
2025-06-24,0.173000
2017-12-26,0.219000
2018-03-21,0.036000
2021-03-23,0.070000
2021-06-22,0.079000
2022-03-22,0.030000
2026-03-24,0.084000
2021-12-30,0.036000
2023-03-21,0.066000
2024-09-24,0.203000
2025-12-23,0.320000
2020-06-23,0.107000
2022-12-20,0.309000
2023-06-20,0.205000
2016-12-23,0.037000
2020-03-24,0.086000
2020-09-22,0.080000
2020-12-22,0.202000
2022-09-20,0.143000
2024-12-24,0.292000
2025-03-25,0.098000
2025-09-23,0.219000
2018-09-25,0.087000
2019-12-23,0.129000
2021-09-21,0.133000
2018-12-24,0.106000
2021-12-21,0.251000
2024-06-25,0.195000