f/overrides/event-backup/fyhtx-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
2022-11-30,0.903000
2025-09-12,1.827000
2017-09-15,1.250000
2017-12-08,1.150000
2024-09-13,2.125000
2019-12-13,26.050000
2022-09-09,182.050000
2019-09-13,3.100000
2023-11-29,1.633000
2018-09-14,49.650000
2018-12-07,2.500000
2024-12-06,1.328000
2025-12-05,1.154000
2021-09-10,66.000000
2023-09-08,2.086000