f/overrides/event-backup/jaflx-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
1995-12-28,0.300000
2006-06-29,0.298000
2008-06-27,0.259000
2014-12-08,0.179000
2012-06-27,0.502000
2021-12-09,0.107000
2025-06-12,0.265000
2004-12-30,0.406000
2026-06-16,0.265000
2011-12-09,0.216000
2015-06-19,0.214000
2003-06-27,0.294000
2007-06-28,0.261000
2017-12-11,0.159000
2022-06-15,0.330000
2011-06-29,1.024000
2021-06-10,0.477000
2023-12-14,0.222000
1996-12-30,0.350000
2005-12-29,0.252000
2010-12-10,0.213000
2016-06-21,0.181000
1996-06-27,0.321000
1997-12-30,0.300000
2009-12-11,0.283000
2018-06-22,0.192000
1998-06-29,0.370000
2007-12-27,0.291000
2013-06-26,0.633000
2016-12-12,0.159000
2004-06-29,0.322000
2010-06-29,0.642000
2019-06-10,0.224000
2024-06-13,0.234000
2012-12-07,0.186000
2015-12-07,0.125000
2019-12-09,0.169000
1994-06-29,0.100000
2008-12-29,0.260000
2024-12-12,0.262000
2020-06-11,0.218000
2022-12-08,0.142000
1993-12-30,0.100000
2006-12-28,0.285000
2013-12-09,0.118000
2014-06-19,0.242000
1994-12-29,0.300000
2003-12-30,0.300000
2009-06-19,0.278000
2025-12-11,0.265000
2018-12-10,0.169000
2020-12-10,0.148000
2023-06-21,0.207000
1995-06-29,0.300000
1997-06-27,0.344000
2005-06-29,0.770000
2017-06-28,0.190000