f/overrides/event-backup/feikx-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
2014-04-04,0.479000
2021-03-05,1.004000
2025-10-03,0.335000
2026-07-10,0.352000
2010-07-09,0.202000
2011-10-07,0.264000
2015-10-02,0.351000
2017-12-08,2.714000
2018-07-06,0.446000
2020-07-10,0.262000
2021-04-05,0.260000
2023-12-27,0.089000
2013-04-05,0.259000
2015-04-01,0.594000
2026-03-13,0.248000
2013-10-04,0.316000
2016-04-08,0.258000
2023-03-10,0.022000
2023-12-08,1.891000
2008-10-03,0.285000
2012-07-06,0.372000
2018-04-06,0.332000
2018-12-07,2.581000
2014-12-12,3.249000
2016-03-11,0.632000
2023-10-06,0.308000
2011-07-08,0.268000
2019-12-13,3.004000
2015-07-01,0.495000
2019-10-04,0.282000
2024-07-05,0.334000
2010-12-10,0.261000
2011-04-06,0.141000
2012-10-05,0.326000
2013-12-13,0.462000
2017-03-10,0.512000
2017-07-07,0.336000
2020-04-03,0.288000
2021-10-01,0.296000
2009-07-10,0.176000
2011-12-09,0.282000
2023-07-07,0.305000
2025-07-11,0.372000
2017-10-06,0.438000
2025-04-04,0.317000
2025-12-19,2.935000
2014-10-03,0.299000
2017-04-07,0.190000
2016-12-09,0.951000
2019-04-05,0.296000
2010-10-01,0.181000
2015-03-13,1.767000
2024-04-05,0.319000
2012-04-04,0.272000
2019-07-05,0.257000
2018-10-05,0.378000
2009-04-03,0.274000
2016-07-08,0.316000
2020-12-11,1.265000
2022-10-07,0.312000
2024-03-08,0.243000
2024-12-20,2.906000
2014-07-03,0.343000
2016-10-07,0.365000
2019-03-08,0.556000
2015-12-11,3.075000
2018-03-09,1.289000
2021-12-10,5.143000
2022-07-01,0.319000
2009-12-11,0.171000
2020-10-02,0.190000
2009-10-02,0.133000
2012-12-14,0.416000
2022-04-01,0.277000
2023-04-05,0.317000
2026-04-01,0.349000
2008-07-11,0.280000
2008-12-12,0.230000
2021-07-02,0.305000
2022-12-09,2.053000
2024-10-04,0.318000
2013-07-05,0.311000
2020-03-06,0.152000