f/overrides/event-backup/ilf-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
2013-12-17,0.601000
2017-06-20,0.310000
2003-12-16,0.046000
2010-12-29,0.037000
2011-06-21,0.744000
2011-12-19,0.659000
2015-12-29,0.143000
2019-12-16,0.570000
2024-06-11,0.662000
2003-12-22,0.025600
2005-12-23,0.338000
2009-12-29,0.036000
2015-12-21,0.224000
2019-06-17,0.480000
2021-06-10,0.378000
2026-06-15,0.439000
2009-06-22,0.308000
2012-06-20,0.642000
2012-12-17,0.348000
2016-06-21,0.153000
2018-06-19,0.511000
2022-06-09,1.098000
2025-06-16,0.595000
2020-06-15,0.272000
2025-12-16,0.540000
2003-12-31,0.020600
2006-12-21,0.652000
2015-06-24,0.322000
2017-12-21,0.276000
2009-12-21,0.408000
2010-12-20,0.357000
2014-12-19,0.350000
2018-12-18,0.451000
2007-12-24,0.694400
2008-06-23,0.529000
2008-12-22,0.471000
2008-12-29,0.076000
2025-12-30,0.201000
2023-12-20,0.860000
2024-12-17,0.894000
2010-06-21,0.778000
2013-06-25,0.628000
2020-12-14,0.279000
2021-12-13,1.609000
2017-12-28,0.031000
2022-12-13,1.814000
2023-06-07,0.479000
2004-12-23,0.187600
2012-12-27,0.146000
2014-06-24,0.389000
2016-12-22,0.285000