f/overrides/event-backup/mbvkx-capitalGain.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,Capital Gains
2020-08-05,1.629000
2022-08-17,1.122000
2024-12-11,1.252000
2015-12-11,2.865000
2019-11-26,2.098000
2021-11-26,0.860000
2023-12-08,0.488000
2025-07-17,0.935000
2020-11-24,0.323000
2022-11-30,0.497000
2025-12-09,1.617000
2016-12-06,0.370000
2017-12-04,0.813000
2018-11-27,5.044000
2021-08-11,2.540000