f/overrides/event-backup/eemv-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
2014-12-17,0.821000
2026-06-15,0.647000
2011-12-20,0.713000
2014-06-25,0.712000
2016-06-22,0.642000
2020-12-14,0.942000
2012-06-21,0.611000
2013-06-27,0.628000
2015-12-21,0.641000
2018-06-19,0.511000
2021-12-13,0.819000
2023-06-07,0.473000
2013-12-18,0.832000
2017-06-20,0.427000
2022-12-13,0.756000
2024-12-17,1.401000
2016-12-21,0.725000
2018-12-18,0.862000
2019-12-16,0.916000
2020-06-15,0.552000
2021-06-10,0.524000
2017-12-19,0.996000
2022-06-09,0.270000
2025-06-16,0.721000
2025-12-16,0.975000
2012-12-18,0.384000
2015-06-25,0.598000
2019-06-17,0.624000
2023-12-20,1.058000
2024-06-11,0.629000