f/overrides/event-backup/dagvx-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
2015-12-08,5.311000
2021-12-08,9.587000
2006-12-05,2.103000
2024-12-04,3.685000
1995-12-12,0.035000
2000-12-04,4.368000
2013-12-18,2.306000
1997-12-03,1.720000
1999-11-30,2.594000
2011-12-14,0.195000
2010-12-09,0.191000
2014-12-10,4.520000
2016-12-05,1.052000
2019-12-10,1.241000
2020-12-08,1.002000
2005-12-05,2.357000
2007-12-04,2.199000
1996-12-11,1.915000
2025-12-04,3.264000
2018-12-06,5.475000
2022-12-06,3.540000
2023-12-06,2.091000
1998-12-02,1.090000
2008-12-02,0.261000
2009-12-04,0.139000
2001-11-28,0.696000
2012-12-20,0.375000
2017-12-05,4.292000