f/overrides/event-backup/ioo-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

52 lines
1015 B
Plaintext

Date,Dividends
2001-03-28,0.047500
2014-06-24,0.978000
2021-12-13,0.522000
2021-12-30,0.049000
2026-06-15,0.721000
2000-12-20,0.012000
2006-12-21,0.678500
2010-06-21,0.429500
2015-06-24,0.649500
2021-06-10,0.625000
2025-06-16,0.715000
2008-06-23,0.575500
2010-12-20,0.254500
2013-12-17,0.372000
2023-06-07,0.765000
2004-12-22,0.081500
2005-12-23,0.599000
2007-12-24,0.691000
2009-06-22,0.556000
2011-12-19,0.336000
2016-12-22,0.433500
2019-12-16,0.436000
2020-12-14,0.433000
2024-06-11,0.650000
2025-12-16,0.447000
2003-12-22,0.323000
2008-12-22,0.366500
2012-06-20,0.539500
2014-12-19,0.364500
2017-06-20,0.635000
2022-06-09,0.780000
2023-12-20,0.437000
2002-12-23,0.276000
2017-12-21,0.396500
2009-12-21,0.279000
2011-06-21,0.561000
2012-12-17,0.354000
2019-06-17,0.651000
2022-12-13,0.502000
2001-06-07,0.121000
2001-10-02,0.104000
2001-12-24,0.040500
2004-12-23,0.512500
2013-06-25,0.542000
2015-12-21,0.402000
2016-06-21,0.623000
2018-06-19,0.648000
2018-12-18,0.430000
2020-06-15,0.507000
2024-12-17,0.435000