f/overrides/event-backup/fvdkx-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
2015-12-11,0.013000
2019-09-06,0.146000
2024-12-20,0.161000
2008-09-12,0.020000
2016-12-09,0.005000
2017-09-08,0.242000
2018-12-07,0.437000
2023-09-08,0.993000
2025-09-12,1.835000
2014-09-12,0.018000
2018-09-07,0.156000
2021-12-10,0.939000
2022-09-09,1.213000
2023-12-08,0.264000
2024-09-13,1.088000
2015-09-11,0.306000
2019-12-13,0.232000
2021-09-03,0.459000