f/overrides/event-backup/fhmix-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
2021-06-30,0.002702
2022-06-30,0.008401
2025-06-30,0.024504
2022-12-30,0.027691
2024-05-31,0.031216
2021-02-26,0.002184
2021-11-30,0.002168
2022-02-28,0.001986
2025-08-31,0.023352
2024-03-31,0.030527
2024-09-30,0.030227
2025-01-31,0.023669
2025-11-30,0.024881
2026-04-30,0.025088
2024-07-31,0.028871
2026-01-30,0.020160
2026-03-31,0.021905
2022-07-29,0.009483
2023-06-30,0.031376
2022-08-31,0.016016
2023-11-30,0.032419
2025-05-30,0.024551
2026-07-31,0.021053
2023-01-31,0.023258
2024-06-28,0.030521
2026-05-29,0.021183
2024-04-30,0.031898
2024-11-30,0.027984
2026-02-27,0.021902
2021-07-30,0.002183
2022-03-31,0.003134
2022-11-30,0.019767
2026-06-30,0.022167
2024-12-10,0.000084
2025-11-28,0.024881
2021-09-30,0.002171
2021-10-29,0.001875
2023-02-28,0.026623
2024-01-31,0.029312
2024-02-29,0.029407
2024-03-28,0.030527
2026-01-31,0.020160
2023-09-29,0.031626
2025-03-31,0.027064
2021-05-28,0.002291
2021-08-31,0.002066
2022-01-31,0.001542
2022-04-29,0.004718
2023-05-31,0.029844
2023-08-31,0.031584
2025-10-31,0.024650
2025-12-31,0.025724
2026-05-31,0.021183
2021-03-31,0.001834
2024-08-31,0.030230
2024-11-29,0.027984
2024-12-31,0.028240
2025-02-28,0.023707
2025-07-31,0.022195
2022-05-31,0.006791
2024-06-30,0.030521
2025-04-30,0.030080
2025-05-31,0.024551
2025-08-29,0.023352
2022-09-30,0.015484
2023-03-31,0.028092
2023-04-28,0.027670
2023-12-29,0.032324
2024-08-30,0.030230
2024-10-31,0.030304
2026-02-28,0.021902
2021-04-30,0.002649
2021-12-31,0.001936
2022-10-31,0.021937
2023-07-31,0.030311
2023-10-31,0.033805
2025-09-30,0.024927