f/overrides/event-backup/drlix-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
2014-12-26,0.276000
2009-12-29,0.352000
2010-04-30,0.023000
2011-12-27,0.108000
2017-03-21,0.048000
2018-03-20,0.032000
2007-09-20,0.047000
2008-06-20,0.033000
2008-12-29,0.052000
2015-12-28,0.464000
2012-12-26,0.434000
2025-12-29,0.265000
2007-12-21,0.105000
2010-03-31,0.034000
2011-03-31,0.044000
2024-12-26,0.223000
2008-09-11,0.009000
2010-12-27,0.281000
2018-12-26,0.348000
2017-12-26,0.377000
2019-12-26,0.978000
2020-12-28,0.092000
2023-12-26,0.222000
2008-03-20,0.030000
2013-03-28,0.030000
2016-12-27,0.487000
2022-12-27,0.558000
2007-03-21,0.014000
2013-12-26,0.237000
2020-03-24,0.036000
2021-12-28,0.842000
2007-06-20,0.017000
2009-03-31,0.020000
2019-03-19,0.035000