f/overrides/event-backup/inpax-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
2014-03-26,0.101000
2023-09-27,0.115000
2025-06-25,0.122000
2013-12-27,0.102000
2020-03-26,0.098000
2013-06-26,0.079000
2015-12-29,0.181000
2020-09-25,0.094000
2025-12-29,0.448000
2016-03-24,0.087000
2016-06-23,0.091000
2016-12-28,0.155000
2019-06-25,0.099000
2021-03-29,0.083000
2014-06-25,0.086000
2014-09-25,0.089000
2021-06-28,0.077000
2018-03-26,0.089000
2018-09-25,0.096000
2024-03-25,0.107000
2024-06-25,0.118000
2024-12-27,0.335000
2012-09-26,0.062000
2016-09-22,0.088000
2022-06-28,0.091000
2023-06-28,0.109000
2017-12-27,0.159000
2018-12-27,0.286000
2019-09-25,0.099000
2022-03-29,0.083000
2012-06-27,0.049000
2015-06-25,0.092000
2017-03-23,0.083000
2026-03-26,0.096000
2012-12-27,0.133000
2017-09-21,0.089000
2019-03-26,0.095000
2020-12-23,0.432000
2024-09-25,0.123000
2013-09-26,0.080000
2015-03-25,0.084000
2015-09-24,0.077000
2021-12-29,0.376000
2022-12-28,0.322000
2023-03-29,0.101000
2014-12-29,0.158000
2021-09-28,0.082000
2025-03-26,0.110000
2020-06-25,0.096000
2023-12-27,0.284000
2017-06-22,0.088000
2013-03-27,0.079000
2018-06-26,0.095000
2019-12-27,0.298000
2022-09-28,0.098000
2025-09-25,0.120000
2026-06-25,0.138000