f/overrides/event-backup/hawx-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
2022-07-05,0.505000
2022-12-23,0.195000
2023-12-22,0.407000
2025-07-02,0.480000
2015-12-02,0.672000
2018-12-28,0.213000
2021-12-23,0.474000
2021-12-30,0.050000
2024-07-02,0.491000
2017-12-28,0.289000
2018-07-03,0.381000
2019-12-24,0.454000
2020-12-24,0.274000
2021-07-02,0.332000
2024-12-20,0.576000
2025-12-23,0.628000
2016-07-06,0.381000
2016-12-28,0.194000
2017-07-06,0.356000
2019-07-02,0.453000
2020-07-02,0.316000
2022-12-02,3.622000
2023-07-03,0.449000
2026-07-02,0.502000
2015-12-28,0.183000