f/overrides/event-backup/fiqdx-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
2021-10-01,0.375000
2025-12-17,0.130000
2019-12-27,0.007000
2020-04-03,0.022000
2020-07-10,0.037000
2021-12-22,0.074000
2022-07-01,0.080000
2023-10-06,0.150000
2018-12-07,0.517000
2026-04-01,0.040000
2026-07-10,0.131000
2021-04-05,0.011000
2023-12-20,0.128000
2024-07-05,0.103000
2022-04-01,0.029000
2024-10-04,0.112000
2025-10-03,0.137000
2019-07-05,0.079000
2019-10-04,0.081000
2025-04-04,0.059000
2020-10-02,0.056000
2020-12-23,0.079000
2022-12-21,0.097000
2023-04-05,0.062000
2024-12-18,0.135000
2025-07-11,0.094000
2024-04-05,0.060000
2018-10-05,0.144000
2019-04-05,0.008000
2019-12-06,0.090000
2021-07-02,0.046000
2022-10-07,0.414000
2023-07-07,0.107000