f/overrides/event-backup/gtilx-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
2019-07-03,0.047000
2020-07-01,0.057000
2020-10-07,0.047000
2021-12-14,7.085000
2022-07-06,0.046000
2017-04-05,0.042000
2017-07-05,0.058000
2018-07-05,0.068000
2022-10-05,0.035000
2023-12-15,1.491000
2020-04-01,0.047000
2021-04-07,0.025000
2024-12-16,10.862000
2021-07-07,0.039000
2015-12-11,0.055000
2016-10-05,0.046000
2018-12-14,4.369000
2022-04-06,0.032000
2022-12-15,1.976000
2016-04-06,0.044000
2018-10-03,0.066000
2019-10-02,0.048000
2023-04-05,0.045000
2025-12-15,4.192000
2016-12-14,0.054000
2017-12-13,0.649000
2019-12-13,4.288000
2020-12-15,4.744000
2021-10-06,0.027000
2023-07-05,0.025000
2023-10-04,0.019000
2016-07-06,0.051000
2017-10-04,0.047000
2018-04-04,0.040000
2019-04-03,0.064000