f/overrides/event-backup/lafax-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
2019-12-17,2.321000
2021-12-20,1.540000
2005-06-07,0.237000
2009-06-10,0.149000
2010-06-09,0.303000
2011-12-07,0.664000
2014-12-09,2.881000
2025-12-17,1.066000
2007-12-11,1.811000
2012-06-06,0.120000
2012-12-06,3.837000
2014-06-04,0.112000
2016-12-07,0.160000
2018-12-18,1.855000
2007-06-05,0.075000
2013-06-05,0.530000
2013-12-11,1.753000
2020-06-10,0.092000
2025-06-10,0.737000
2008-06-11,0.543000
2011-06-08,0.316000
2015-06-03,0.098000
2001-06-12,0.090000
2017-12-18,0.011000
2015-12-09,0.333000
2019-06-12,0.301000
2006-06-06,0.003000
2021-06-10,0.148000
2022-06-08,0.924000
2024-06-12,0.238000
2004-06-02,0.028000