f/overrides/event-backup/gtip-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
2024-05-01,0.379000
2025-04-01,0.386000
2021-07-01,0.353000
2021-09-01,0.386000
2023-04-03,0.042000
2023-09-01,0.149000
2025-09-02,0.218000
2025-11-03,0.211000
2019-07-01,0.296000
2019-08-01,0.133000
2019-12-02,0.056000
2021-06-01,0.255000
2022-12-27,0.081000
2023-10-02,0.082000
2024-11-01,0.082000
2025-02-03,0.005000
2021-11-01,0.033000
2022-07-01,0.220000
2025-06-02,0.170000
2018-12-03,0.154000
2021-04-01,0.115000
2021-12-01,0.067000
2022-03-01,0.095000
2022-05-03,0.398000
2025-08-01,0.167000
2025-10-01,0.152000
2026-05-01,0.301000
2018-11-01,0.046000
2019-09-03,0.035000
2020-12-29,0.042000
2021-12-28,0.339000
2022-02-01,0.177000
2023-11-01,0.219000
2019-12-27,0.202000
2020-10-01,0.144000
2022-09-01,0.650000
2023-05-01,0.254000
2024-09-03,0.052000
2024-10-01,0.097000
2021-05-03,0.221000
2021-10-01,0.174000
2023-12-01,0.131000
2024-06-03,0.366000
2024-07-01,0.222000
2024-08-01,0.140000
2026-08-03,0.398000
2020-12-01,0.038000
2024-12-31,0.117000
2026-04-01,0.115000
2026-07-01,0.534000
2018-12-27,0.128000
2019-11-01,0.014000
2025-12-31,0.200000
2026-06-01,0.537000
2019-05-01,0.069000
2019-06-03,0.313000
2021-08-02,0.292000
2022-04-01,0.387000
2022-06-01,0.624000
2023-08-01,0.116000
2025-03-03,0.057000
2025-05-01,0.289000
2022-08-01,0.501000
2020-04-01,0.131000
2020-05-01,0.113000
2020-11-02,0.131000
2023-06-01,0.136000
2024-12-02,0.119000
2025-07-01,0.219000
2019-10-01,0.108000
2023-07-03,0.228000
2024-04-01,0.123000
2025-12-01,0.175000