f/overrides/event-backup/eps-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
2024-12-26,0.250000
2025-09-25,0.225000
2020-12-21,0.200000
2021-12-27,0.217000
2014-09-22,0.106000
2017-03-27,0.111667
2018-09-25,0.156000
2020-06-23,0.190000
2023-03-27,0.190000
2025-03-26,0.195000
2011-09-26,0.071667
2014-03-24,0.087333
2011-03-21,0.055000
2016-03-21,0.109333
2022-03-25,0.170000
2025-12-26,0.245000
2008-06-23,0.062333
2008-12-22,0.083000
2015-12-21,0.153000
2017-06-26,0.116667
2019-06-24,0.160000
2021-06-24,0.185000
2024-06-25,0.225000
2024-09-25,0.220000
2009-06-22,0.058667
2015-03-23,0.110667
2026-06-25,0.225000
2012-12-24,0.116333
2019-12-23,0.164000
2008-09-22,0.067667
2011-06-22,0.070667
2022-09-26,0.215000
2012-03-26,0.065333
2017-12-26,0.138000
2016-12-23,0.150333
2008-03-24,0.071667
2010-06-28,0.063000
2012-06-25,0.083333
2013-12-24,0.108333
2015-09-21,0.121667
2020-09-22,0.175000
2021-03-25,0.169000
2009-03-23,0.068667
2010-12-22,0.081000
2013-03-22,0.073667
2013-09-23,0.084333
2016-06-20,0.113333
2023-06-26,0.220000
2026-03-26,0.200000
2007-03-26,0.030000
2011-12-21,0.089000
2019-03-26,0.125000
2007-12-17,0.075000
2016-09-26,0.138333
2018-06-25,0.146000
2022-12-23,0.223000
2015-06-22,0.112667
2017-09-26,0.126667
2014-06-23,0.096667
2018-12-24,0.164000
2022-06-24,0.205000
2009-09-21,0.053667
2014-12-19,0.107333
2013-06-24,0.083333
2024-03-22,0.205000
2007-06-25,0.071000
2009-12-21,0.069333
2010-09-20,0.058333
2007-09-24,0.062667
2010-03-29,0.043667
2019-09-24,0.175000
2020-03-24,0.179000
2021-09-24,0.190000
2023-09-25,0.215000
2023-12-22,0.240000
2025-06-25,0.230000
2012-09-24,0.093000
2018-03-20,0.103000