f/overrides/event-backup/dhlax-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
2009-12-30,0.014000
2016-12-29,0.240000
2024-12-12,2.947000
2024-12-30,0.378000
2025-12-30,0.064000
2006-12-12,0.116000
2008-12-30,0.143000
2019-12-30,0.262000
2013-12-30,0.166000
2019-12-12,1.037000
2015-12-17,0.850000
2015-12-30,0.176000
2017-12-14,0.995000
2020-12-14,0.730000
2005-12-30,0.058000
2007-12-12,0.821000
2012-12-28,0.255000
2013-12-17,0.857000
2014-12-17,0.810000
2014-12-30,0.192000
2018-12-28,0.260000
2010-12-30,0.105000
2011-12-29,0.169000
2020-12-30,0.185000
2021-12-30,0.213000
2023-12-28,0.236000
2008-12-16,0.102000
2018-12-13,0.719000
2016-12-15,1.212000
2021-12-14,2.372000
2023-12-14,0.739000
2005-12-07,0.037000
2006-12-29,0.139000
2017-12-28,0.203000
2022-12-14,1.496000
2007-12-28,0.191000
2010-04-30,0.022000
2022-12-29,0.334000
2025-12-12,1.875000
2003-12-31,0.042000
2004-12-31,0.014000