f/overrides/event-backup/lmvyx-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
2015-11-24,0.744000
2018-11-20,4.227000
2022-11-22,1.842000
2024-11-26,1.987000
2025-12-02,1.287000
1999-11-18,0.091000
2003-11-25,0.352000
2016-11-22,6.024000
2017-11-21,6.047000
2019-11-21,4.108000
2021-11-23,3.228000
2023-11-21,0.069000
2000-11-21,0.170000
2014-11-21,3.589000
2020-11-24,0.246000
2001-11-21,0.078000
2002-11-20,0.113000