f/overrides/event-backup/kmi-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
2026-02-02,0.293000
2012-10-31,0.360000
2015-04-28,0.480000
2026-08-03,0.298000
2020-05-01,0.263000
2023-10-30,0.283000
2017-04-27,0.125000
2018-01-30,0.125000
2019-07-30,0.250000
2020-01-31,0.250000
2021-07-30,0.270000
2024-10-31,0.288000
2014-01-29,0.410000
2014-10-29,0.440000
2025-04-30,0.293000
2021-10-29,0.270000
2026-05-04,0.298000
2017-01-30,0.125000
2021-04-29,0.270000
2019-01-30,0.200000
2020-10-30,0.263000
2022-10-28,0.278000
2023-07-28,0.283000
2025-02-03,0.288000
2012-04-26,0.320000
2017-10-30,0.125000
2015-07-29,0.490000
2018-07-30,0.200000
2022-01-28,0.270000
2023-01-30,0.278000
2011-04-28,0.140000
2014-07-29,0.430000
2017-07-27,0.125000
2018-04-27,0.200000
2024-04-29,0.288000
2025-11-03,0.293000
2015-10-29,0.510000
2022-04-29,0.278000
2019-04-29,0.250000
2023-04-28,0.283000
2011-10-27,0.300000
2013-01-29,0.370000
2013-04-25,0.380000
2016-01-28,0.125000
2024-01-30,0.283000
2013-07-29,0.400000
2014-04-28,0.420000
2018-10-30,0.200000
2021-01-29,0.263000
2022-07-29,0.278000
2012-01-27,0.310000
2015-01-29,0.450000
2016-10-28,0.125000
2019-10-30,0.250000
2016-04-28,0.125000
2016-07-28,0.125000
2011-07-28,0.300000
2013-10-29,0.410000
2024-07-31,0.288000
2025-07-31,0.293000
2012-07-27,0.350000
2020-07-31,0.263000