f/overrides/event-backup/lphkx-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
2013-09-30,0.062000
2015-09-30,0.058000
2020-03-31,0.041000
2021-03-31,0.110000
2013-06-28,0.073000
2020-06-30,0.202000
2016-03-31,0.050000
2017-06-30,0.269000
2014-12-31,0.848000
2012-09-28,0.044000
2018-03-29,0.070000
2011-12-30,0.062000
2016-09-30,0.049000
2023-09-29,0.084000
2012-03-30,0.035000
2015-12-30,0.391000
2018-12-31,1.014000
2025-07-17,0.144000
2012-06-29,0.087000
2015-03-31,0.050000
2017-12-29,1.196000
2019-09-27,0.061000
2025-12-29,1.045000
2013-12-31,0.559000
2015-06-30,0.181000
2016-06-30,0.089000
2021-06-30,0.123000
2024-06-28,0.195000
2011-03-31,0.015000
2019-12-31,0.637000
2020-09-30,0.077000
2019-06-28,0.088000
2016-12-30,0.121000
2021-12-31,2.039000
2022-03-31,0.160000
2011-06-30,0.094000
2014-06-30,0.248000
2020-12-31,0.082000
2022-06-30,0.077000
2023-03-31,0.110000
2026-07-22,0.141000
2014-03-31,0.063000
2023-06-30,0.048000
2013-03-28,0.003000
2017-03-31,0.040000
2019-03-28,0.033000
2023-12-22,0.323000
2024-12-24,1.601000
2012-12-31,0.086000
2021-09-30,0.001000
2022-07-14,0.147000
2017-09-29,0.061000
2011-09-30,0.033000
2018-06-29,0.340000
2018-09-28,0.064000
2010-12-31,0.704000