f/overrides/event-backup/embd-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
2024-12-30,0.247000
2020-08-05,0.092000
2022-02-03,0.088000
2022-03-03,0.080000
2022-12-29,0.054000
2024-05-03,0.096000
2025-12-01,0.109000
2026-08-03,0.114000
2020-10-05,0.092000
2022-08-03,0.085000
2022-11-03,0.085000
2022-12-05,0.085000
2025-08-01,0.112000
2021-03-03,0.092000
2021-06-03,0.088000
2021-12-03,0.088000
2022-05-04,0.080000
2025-06-02,0.113000
2023-06-05,0.090000
2020-12-30,0.378000
2021-04-05,0.092000
2021-09-03,0.088000
2022-04-05,0.077000
2022-10-05,0.085000
2023-04-05,0.086000
2024-07-03,0.096000
2021-12-30,0.311000
2023-09-06,0.092000
2026-06-01,0.113000
2023-12-28,0.202000
2024-04-03,0.096000
2025-07-01,0.112000
2025-12-30,0.114000
2020-07-06,0.091000
2020-12-03,0.092000
2026-03-02,0.115000
2024-02-05,0.094000
2024-10-03,0.100000
2024-11-05,0.100000
2020-11-04,0.092000
2021-10-05,0.088000
2022-06-03,0.080000
2023-05-03,0.086000
2023-12-05,0.094000
2025-03-03,0.101000
2025-11-03,0.112000
2021-05-05,0.092000
2023-10-04,0.092000
2023-11-03,0.092000
2024-06-05,0.096000
2023-08-03,0.092000
2026-04-01,0.116000
2020-09-03,0.092000
2021-11-03,0.088000
2023-07-06,0.090000
2024-08-05,0.096000
2025-02-03,0.100000
2025-04-01,0.113000
2025-05-01,0.109000
2025-10-01,0.112000
2021-02-03,0.092000
2021-07-06,0.088000
2021-08-04,0.088000
2023-02-03,0.085000
2023-03-03,0.085000
2026-02-02,0.115000
2026-05-01,0.112000
2026-07-01,0.113000
2025-09-02,0.110000
2022-07-06,0.085000
2022-09-06,0.085000
2024-03-05,0.094000
2024-09-05,0.100000
2024-12-04,0.100000