f/overrides/event-backup/mwofx-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
2018-12-13,1.847000
2022-12-08,1.786000
1997-12-23,2.101000
1999-12-17,1.905000
2021-12-09,3.969000
2009-12-17,0.094000
2015-12-15,1.891000
2019-12-12,0.911000
2023-12-21,1.222000
2024-12-19,3.167000
1995-12-28,0.183000
1998-12-17,1.614000
2012-12-13,0.072000
2016-12-15,0.541000
2006-12-14,0.239000
2007-12-13,0.172000
2008-12-16,0.001000
2010-12-16,0.059000
2013-12-12,1.142000
2020-12-10,1.789000
2025-12-18,3.394000
1996-03-29,0.004000
1996-12-23,1.053000
2000-12-18,5.975000
2011-12-15,0.073000
2017-12-14,1.469000
2014-12-16,1.468000