f/overrides/event-backup/btirx-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

347 B

1DateCapital Gains
22020-06-236.454000
32021-12-1526.544000
42023-12-1537.130000
52024-06-212.319000
62020-12-1529.409000
72021-06-232.763000
82022-12-1518.216000
92018-06-221.638000
102018-12-1733.923000
112019-06-215.650000
122019-12-1618.467000
132024-12-1627.186000
142017-06-234.726000
152017-12-1524.817000
162022-06-231.441000
172023-06-230.614000