f/overrides/event-backup/creax-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
2010-03-26,0.039000
2017-06-21,0.129000
2018-06-21,0.586000
2018-09-21,0.065000
2020-03-20,0.069000
2021-09-21,0.051000
2021-12-14,0.537000
2006-06-29,0.129000
2026-06-22,0.206000
2025-12-16,0.380000
2016-03-23,0.077000
2019-12-13,1.280000
2023-03-20,0.060000
2011-06-24,0.055000
2014-12-10,0.507000
2015-06-18,0.577000
2022-12-13,0.071000
2003-03-26,0.074000
2009-12-07,0.101000
2010-09-24,0.051000
2010-12-07,0.103000
2011-09-26,0.077000
2020-09-22,0.050000
2022-06-21,0.470000
2006-12-11,5.160000
2012-09-25,0.068000
2023-12-19,2.973000
2005-09-29,0.418000
2014-06-20,0.154000
2016-06-23,0.232000
2018-12-13,0.242000
2020-06-17,0.265000
2024-06-14,0.238000
2013-09-20,0.075000
2007-03-29,4.469000
2008-03-28,0.038000
2013-06-21,0.173000
2004-03-30,0.159000
2006-03-30,0.156000
2014-09-19,0.080000
2017-03-22,0.080000
2017-09-21,0.079000
2019-09-20,0.071000
2003-06-25,0.153000
2011-12-06,0.344000
2021-03-18,0.059000
2023-06-21,0.121000
2024-12-17,0.733000
2008-12-08,0.306000
2005-12-15,3.352000
2012-03-23,0.046000
2013-12-09,1.044000
2025-06-13,0.178000
2005-06-29,0.157000
2004-12-15,2.713000
2007-06-28,0.075000
2009-09-28,0.100000
2015-03-18,0.060000
2016-12-14,0.312000
2004-09-29,0.271000
2011-03-22,0.033000
2014-03-19,0.028000
2010-06-24,0.068000
2013-03-20,0.038000
2015-09-17,0.068000
2017-12-13,1.846000
2019-06-17,0.196000
2022-03-18,0.051000
2009-06-24,0.095000
2005-03-30,0.135000
2008-09-29,0.037000
2009-03-27,0.063000
2012-06-22,0.069000
2015-12-10,0.572000
2016-09-22,0.073000
2019-03-20,0.076000
2004-06-29,0.192000
2021-06-18,0.364000
2008-06-27,0.051000
2012-12-07,0.289000
2018-03-21,0.069000
2020-12-11,0.509000
2022-09-21,0.059000
2007-12-10,5.882000
2003-12-12,0.320000
2006-09-28,0.102000
2007-09-27,0.092000
2023-09-21,0.081000
2003-09-25,0.223000