f/overrides/event-backup/meikx-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
2022-06-23,0.247000
2016-06-28,0.181000
2018-06-27,0.228000
2019-09-26,0.203000
2022-03-24,0.230000
2012-12-11,0.354000
2017-03-29,0.153000
2023-09-21,0.244000
2007-03-28,0.087000
2007-06-27,0.109000
2009-06-25,0.094000
2010-12-09,0.105000
2019-03-27,0.163000
2017-09-27,0.151000
2020-06-25,0.194000
2023-03-23,0.207000
2024-09-26,0.236000
2008-06-26,0.101000
2009-09-28,0.069000
2015-06-25,0.178000
2017-06-28,0.165000
2025-06-26,0.255000
2014-09-25,0.200000
2015-09-28,0.163000
2016-12-13,0.929000
2026-03-26,0.323000
2006-09-27,0.133000
2009-03-26,0.079000
2010-03-25,0.069000
2010-06-24,0.093000
2009-12-10,0.107000
2014-06-26,0.175000
2026-06-25,0.218000
2017-12-21,1.425000
2023-12-14,3.388000
2008-09-25,0.092000
2013-12-10,0.757000
2015-03-26,0.232000
2016-09-27,0.138000
2021-03-25,0.193000
2006-12-07,0.103000
2010-09-28,0.069000
2013-09-25,0.131000
2020-09-24,0.197000
2006-06-28,0.097000
2024-03-26,0.232000
2024-12-12,3.875000
2022-09-22,0.256000
2023-06-22,0.215000
2011-12-08,0.140000
2014-03-27,0.258000
2020-12-17,0.632000
2021-09-23,0.207000
2012-09-25,0.111000
2015-12-10,1.433000
2018-09-26,0.156000
2025-09-25,0.223000
2012-03-22,0.088000
2013-03-27,0.128000
2021-12-16,1.260000
2019-12-19,0.741000
2007-09-26,0.090000
2011-03-24,0.074000
2013-06-26,0.158000
2018-12-20,0.793000
2024-06-25,0.249000
2007-12-11,0.131000
2008-12-11,0.124000
2012-06-26,0.131000
2020-03-26,0.209000
2025-12-11,4.121000
2011-06-23,0.106000
2014-12-11,1.110000
2021-06-24,0.206000
2022-12-15,2.954000
2019-06-26,0.350000
2025-03-25,0.253000
2008-03-27,0.063000
2011-09-27,0.094000
2016-03-29,0.138000
2018-03-27,0.149000