f/overrides/event-backup/gpm-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,ctime
2012-06-13,0.24,2021-08-28 07:49:09
2015-12-11,0.24,2021-08-28 07:49:09
2016-06-13,0.24,2021-08-28 07:49:09
2012-03-13,0.24,2021-08-28 07:49:09
2020-09-14,0.12,2021-08-28 07:49:09
2012-09-12,0.24,2021-08-28 07:49:09
2016-03-11,0.24,2021-08-28 07:49:09
2008-03-12,0.4,2021-08-28 07:49:09
2011-12-13,0.24,2021-08-28 07:49:09
2016-09-13,0.24,2021-08-28 07:49:09
2013-03-19,0.24,2021-08-28 07:49:09
2008-09-11,0.4,2021-08-28 07:49:09
2011-03-11,0.24,2021-08-28 07:49:09
2008-06-11,0.4,2021-08-28 07:49:09
2019-12-12,0.24,2021-08-28 07:49:09
2017-03-13,0.24,2021-08-28 07:49:09
2021-06-14,0.12,2021-08-28 07:49:09
2012-12-12,0.24,2021-08-28 07:49:09
2015-06-11,0.24,2021-08-28 07:49:09
2019-09-12,0.24,2021-08-28 07:49:09
2021-03-12,0.12,2021-08-28 07:49:09
2008-12-11,0.4,2021-08-28 07:49:09
2015-09-11,0.24,2021-08-28 07:49:09
2007-03-13,0.4,2021-08-28 07:49:09
2011-06-13,0.24,2021-08-28 07:49:09
2020-03-12,0.24,2021-08-28 07:49:09
2007-06-13,0.4,2021-08-28 07:49:09
2007-12-12,0.4,2021-08-28 07:49:09
2011-09-13,0.24,2021-08-28 07:49:09
2016-12-13,0.24,2021-08-28 07:49:09
2020-06-12,0.12,2021-08-28 07:49:09
2007-09-12,0.4,2021-08-28 07:49:09
2020-12-14,0.12,2021-08-28 07:49:09
2013-12-11,0.24,2021-08-28 07:49:09
2014-06-11,0.24,2021-08-28 07:49:09
2018-09-13,0.24,2021-08-28 07:49:09
2014-09-11,0.24,2021-08-28 07:49:09
2009-12-11,0.24,2021-08-28 07:49:09
2010-06-11,0.24,2021-08-28 07:49:09
2006-09-13,0.4,2021-08-28 07:49:09
2019-03-14,0.24,2021-08-28 07:49:09
2006-06-13,0.4,2021-08-28 07:49:09
2010-09-13,0.24,2021-08-28 07:49:09
2015-03-11,0.24,2021-08-28 07:49:09
2017-12-14,0.24,2021-08-28 07:49:09
2019-06-13,0.24,2021-08-28 07:49:09
2013-06-12,0.24,2021-08-28 07:49:09
2014-12-11,0.24,2021-08-28 07:49:09
2017-09-14,0.24,2021-08-28 07:49:09
2017-06-13,0.24,2021-08-28 07:49:09
2006-12-13,0.4,2021-08-28 07:49:09
2013-09-11,0.24,2021-08-28 07:49:09
2009-06-11,0.24,2021-08-28 07:49:09
2010-12-13,0.24,2021-08-28 07:49:09
2009-03-11,0.4,2021-08-28 07:49:09
2010-03-11,0.24,2021-08-28 07:49:09
2018-03-14,0.24,2021-08-28 07:49:09
2009-09-11,0.24,2021-08-28 07:49:09
2005-12-13,0.4,2021-08-28 07:49:09
2014-03-12,0.24,2021-08-28 07:49:09
2018-06-14,0.24,2021-08-28 07:49:09
2018-12-13,0.24,2021-08-28 07:49:09
2006-03-13,0.4,2021-08-28 07:49:09