f/overrides/event-backup/fldr-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
2024-07-30,0.225000
2025-05-29,0.195000
2025-12-30,0.199000
2019-06-26,0.119000
2023-04-26,0.217000
2023-06-28,0.227000
2023-11-28,0.238000
2024-05-30,0.223000
2024-10-30,0.216000
2025-06-27,0.199000
2019-05-29,0.126000
2020-09-28,0.026000
2021-02-24,0.025000
2022-06-28,0.065000
2023-01-27,0.180000
2023-03-29,0.190000
2024-03-26,0.216000
2025-08-28,0.206000
2026-02-26,0.168000
2018-08-29,0.110000
2018-10-29,0.089000
2022-03-29,0.023000
2022-05-26,0.046000
2022-09-28,0.110000
2024-02-27,0.233000
2025-03-28,0.183000
2026-06-29,0.153000
2018-06-27,0.057000
2019-02-26,0.140000
2019-03-27,0.111000
2021-09-28,0.019000
2020-05-27,0.062000
2022-11-28,0.169000
2022-12-28,0.219000
2023-05-26,0.223000
2026-05-28,0.163000
2020-04-28,0.078000
2021-08-27,0.020000
2023-12-27,0.243000
2025-04-29,0.202000
2025-11-26,0.187000
2019-07-29,0.111000
2019-10-29,0.096000
2020-07-29,0.040000
2023-08-29,0.237000
2024-06-27,0.252000
2026-04-29,0.177000
2026-03-30,0.171000
2019-01-29,0.091000
2019-04-26,0.125000
2022-10-27,0.140000
2023-07-27,0.209000
2023-10-27,0.231000
2024-04-26,0.247000
2025-09-29,0.198000
2020-08-27,0.028000
2022-07-27,0.081000
2025-07-30,0.198000
2024-09-27,0.229000
2018-07-27,0.108000
2019-12-27,0.141000
2020-03-27,0.091000
2021-06-28,0.022000
2022-04-27,0.035000
2023-09-27,0.229000
2024-01-29,0.233000
2024-11-27,0.212000
2025-01-30,0.189000
2025-02-27,0.202000
2024-08-29,0.241000
2018-11-28,0.107000
2018-12-27,0.114000
2020-01-29,0.087000
2020-11-25,0.025000
2020-12-29,0.029000
2021-11-26,0.021000
2022-08-29,0.110000
2019-11-26,0.101000
2020-06-26,0.048000
2021-05-26,0.021000
2021-12-29,0.030000
2018-09-26,0.101000
2019-09-26,0.097000
2021-01-27,0.017000
2021-07-28,0.021000
2019-08-28,0.104000
2020-02-26,0.089000
2021-03-29,0.019000
2022-02-24,0.025000
2024-11-29,0.212000
2025-10-30,0.185000
2020-10-28,0.022000
2021-10-27,0.020000
2022-01-27,0.012000
2023-02-24,0.208000
2024-12-30,0.219000
2026-01-29,0.166000
2026-07-30,0.172000