f/overrides/event-backup/ittvx-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
2025-07-30,0.110000
2020-02-27,0.058000
2020-03-27,0.073000
2020-04-29,0.074000
2020-10-29,0.063000
2025-03-27,0.102000
2025-05-29,0.125000
2020-06-26,0.067000
2022-10-28,0.058000
2025-01-30,0.073000
2025-02-27,0.105000
2026-01-29,0.076000
2026-04-29,0.117000
2020-07-30,0.065000
2022-02-25,0.045000
2022-08-30,0.055000
2023-04-27,0.087000
2024-07-26,0.064000
2025-04-29,0.125000
2022-05-27,0.060000
2022-12-28,0.301000
2024-08-27,0.073000
2021-04-29,0.050000
2021-07-29,0.065000
2022-04-28,0.046000
2024-02-27,0.062000
2024-12-27,0.183000
2018-12-27,0.211000
2019-12-17,2.989000
2023-11-29,0.066000
2024-09-26,0.090000
2024-11-27,0.089000
2018-06-28,0.111000
2020-09-28,0.061000
2021-02-25,0.058000
2021-08-30,0.062000
2022-07-28,0.060000
2023-08-29,0.062000
2023-10-30,0.068000
2024-01-29,0.049000
2018-12-17,1.399000
2020-01-30,0.041000
2020-12-29,0.049000
2021-01-28,0.033000
2021-11-29,0.057000
2023-01-30,0.046000
2025-06-26,0.101000
2025-10-30,0.099000
2025-11-26,0.101000
2025-12-29,0.192000
2026-05-28,0.122000
2019-08-29,0.076000
2019-12-27,0.153000
2020-08-28,0.061000
2021-09-28,0.060000
2022-06-28,0.063000
2022-11-29,0.056000
2026-07-30,0.105000
2023-09-27,0.070000
2018-09-27,0.105000
2019-03-28,0.131000
2021-03-29,0.050000
2021-06-28,0.085000
2022-01-28,0.036000
2022-09-28,0.060000
2024-05-29,0.091000
2024-06-26,0.066000
2019-09-27,0.072000
2020-11-25,0.045000
2021-12-17,0.904000
2022-03-29,0.041000
2023-07-28,0.071000
2023-12-27,0.063000
2025-08-28,0.107000
2026-02-26,0.090000
2026-06-26,0.113000
2019-05-30,0.100000
2025-09-26,0.106000
2026-03-27,0.111000
2019-06-27,0.098000
2019-10-30,0.095000
2023-03-29,0.055000
2023-06-28,0.068000
2024-03-26,0.067000
2024-04-26,0.089000
2018-03-28,0.105000
2021-05-27,0.053000
2021-10-28,0.053000
2021-12-29,0.100000
2023-02-27,0.056000
2024-10-28,0.104000
2019-07-30,0.082000
2019-11-27,0.060000
2020-05-28,0.053000
2023-05-30,0.084000