f/overrides/event-backup/dvya-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
2015-06-24,0.491000
2019-03-20,0.660000
2022-12-13,0.466000
2023-09-26,0.622000
2025-09-16,0.663000
2012-06-20,0.640000
2019-12-16,0.341000
2022-06-09,1.046000
2023-03-23,0.351000
2023-06-07,0.742000
2024-06-11,0.729000
2024-09-25,0.707000
2025-06-16,0.762000
2025-12-15,0.382000
2016-03-23,0.755000
2017-12-21,0.544000
2014-03-25,0.504000
2014-12-19,0.347000
2022-03-24,0.221000
2023-12-20,0.602000
2013-09-30,0.811000
2015-09-25,0.895000
2020-06-15,0.186000
2013-03-22,0.494000
2022-09-26,0.725000
2016-09-26,0.711000
2018-12-18,0.536000
2020-03-25,0.437000
2012-09-24,0.851000
2016-06-21,0.417000
2017-03-24,0.555000
2017-06-20,0.475000
2017-09-26,0.800000
2021-12-13,0.557000
2012-12-14,0.568000
2014-09-24,1.019000
2018-03-22,0.578000
2018-06-19,0.528000
2021-09-24,0.723000
2015-03-25,0.560000
2021-03-25,0.481000
2024-03-21,0.286000
2024-12-17,0.417000
2013-12-17,0.941000
2015-12-21,0.145000
2016-12-22,0.273000
2019-06-17,0.615000
2025-03-18,0.277000
2026-06-15,0.843000
2012-03-23,0.570000
2026-03-17,0.351000
2013-06-25,0.807000
2014-06-24,0.760000
2018-09-26,0.875000
2020-09-23,0.642000
2019-09-24,0.799000
2020-12-14,0.121000
2021-06-10,0.391000