f/overrides/event-backup/lmbmx-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
2016-12-21,0.759000
2013-12-11,1.143000
2014-06-18,0.376000
2020-06-18,0.056000
2020-12-22,0.446000
2015-06-24,0.147000
2017-06-13,0.070000
2024-06-13,0.054000
2012-12-27,0.117000
2019-06-20,0.140000
2024-12-17,0.524000
2025-12-16,0.963000
2023-12-15,0.360000
2026-06-12,0.287000
2012-06-19,0.014000
2015-12-22,0.031000
2017-12-20,1.172000
2018-12-19,1.204000
2023-06-15,0.140000
2014-12-10,1.156000
2019-12-18,0.067000
2025-06-13,0.039000
2013-06-18,0.031000
2013-12-27,0.086000
2021-06-17,0.207000
2021-12-22,3.053000
2014-12-23,0.031000
2015-12-09,0.737000
2022-06-17,0.219000
2022-12-15,0.431000