f/overrides/event-backup/fufrx-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
2025-03-20,0.132000
2013-12-02,0.190000
2021-12-01,0.744000
2023-09-20,0.132000
2024-09-20,0.131000
2022-12-20,0.146000
2014-12-01,0.560000
2018-06-01,0.131000
2019-03-01,0.131000
2021-06-01,0.133000
2021-09-01,0.133000
2015-12-01,0.687000
2017-06-01,0.132000
2020-06-01,0.131000
2025-09-22,0.133000
2013-09-03,0.125000
2014-03-03,0.125000
2022-12-15,0.309000
2023-06-20,0.133000
2018-09-04,0.132000
2019-06-03,0.132000
2022-06-21,0.133000
2023-03-20,0.131000
2024-12-20,1.700000
2016-09-01,0.127000
2022-03-21,0.132000
2016-06-01,0.126000
2020-03-02,0.133000
2020-09-01,0.132000
2025-06-20,0.132000
2026-06-22,0.134000
2015-03-02,0.130000
2018-12-03,0.743000
2023-12-20,0.897000
2024-03-20,0.130000
2014-06-02,0.126000
2017-12-01,0.497000
2019-12-02,0.524000
2024-06-20,0.131000
2016-03-01,0.126000
2019-09-03,0.132000
2020-12-01,1.596000
2021-03-01,0.131000
2014-09-02,0.126000
2017-09-01,0.132000
2018-03-01,0.131000
2022-09-20,0.133000
2015-06-01,0.122000
2015-09-01,0.126000
2025-12-22,1.614000
2026-03-20,0.133000
2016-12-01,0.153000
2017-03-01,0.126000