f/overrides/event-backup/bbeu-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
2024-06-25,1.028000
2025-09-23,0.265000
2018-09-25,0.068000
2021-03-23,0.236000
2022-12-20,0.227000
2023-03-21,0.098000
2024-03-19,0.199000
2018-12-24,0.140000
2020-03-24,0.344000
2020-09-22,0.290000
2020-06-23,0.192000
2022-03-22,0.160000
2022-09-20,0.355000
2025-03-25,0.194000
2025-12-23,0.478000
2026-03-24,0.287000
2023-09-19,0.303000
2024-09-24,0.288000
2024-12-24,0.790000
2021-12-21,0.533000
2023-06-20,1.006000
2025-06-24,1.139000
2020-12-22,0.370000
2021-09-21,0.293000
2022-06-21,1.548000
2019-06-25,0.852000
2019-09-24,0.292000
2019-12-23,0.246000
2023-12-19,0.256000
2019-03-20,0.270000
2021-06-22,0.507000
2026-06-23,1.247000