f/overrides/event-backup/fnda-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
2019-12-12,0.094500
2024-09-25,0.107500
2014-09-29,0.040500
2015-09-28,0.052500
2021-06-23,0.058000
2022-03-23,0.023500
2014-06-30,0.038500
2020-12-30,0.025500
2019-06-26,0.070500
2022-09-21,0.086500
2024-03-20,0.078000
2026-03-25,0.060000
2016-12-19,0.058500
2017-09-18,0.055000
2023-12-06,0.127000
2026-06-24,0.097000
2015-06-29,0.043500
2018-12-12,0.105500
2017-06-26,0.045500
2018-03-16,0.035000
2019-09-25,0.075500
2022-06-22,0.081500
2025-03-26,0.051000
2013-10-01,0.010500
2016-06-27,0.051500
2025-06-25,0.074000
2013-12-23,0.035000
2020-12-10,0.081500
2024-12-11,0.164000
2014-12-22,0.047500
2017-12-27,0.003000
2020-09-23,0.070000
2020-06-24,0.062000
2017-12-18,0.087500
2017-04-03,0.055500
2021-09-22,0.074500
2022-12-07,0.130500
2023-09-20,0.090000
2014-03-31,0.032000
2015-03-30,0.039000
2024-06-26,0.105500
2016-10-03,0.057500
2021-12-08,0.170500
2021-03-24,0.018000
2025-12-10,0.152000
2015-12-21,0.051500
2018-09-25,0.074500
2020-03-25,0.041500
2023-06-21,0.092500
2018-12-28,0.005000
2018-06-26,0.054000
2025-09-24,0.108000
2023-03-22,0.070000
2019-03-20,0.037500