f/overrides/event-backup/ktrzx-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
2026-03-24,0.077000
2017-03-24,0.060000
2018-06-22,0.087000
2020-03-24,0.075000
2018-09-21,0.097000
2018-12-31,0.015000
2019-03-22,0.087000
2020-12-15,0.052000
2022-09-23,0.066000
2014-12-16,0.834000
2016-06-23,0.072000
2017-09-22,0.088000
2024-12-16,1.219000
2025-03-24,0.092000
2025-06-23,0.097000
2022-12-15,0.065000
2023-12-15,0.074000
2024-06-21,0.105000
2020-06-23,0.079000
2021-12-15,0.870000
2026-06-23,0.098000
2017-06-23,0.070000
2018-12-17,0.177000
2019-09-23,0.087000
2023-09-22,0.079000
2015-03-24,0.088000
2016-03-23,0.061000
2019-06-21,0.087000
2022-03-24,0.049000
2022-06-23,0.076000
2023-06-23,0.082000
2024-03-21,0.089000
2024-09-23,0.106000
2015-06-23,0.103000
2021-03-24,0.052000
2021-09-23,0.073000
2016-09-23,0.056000
2018-03-22,0.087000
2019-12-16,0.084000
2025-09-23,0.107000
2025-12-15,0.630000
2015-09-23,0.103000
2015-12-15,0.085000
2020-09-23,0.072000
2023-03-24,0.061000
2016-12-15,0.076000
2017-12-15,0.771000
2021-06-23,0.078000