f/overrides/event-backup/aigyx-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

359 B

1DateCapital Gains
22002-12-200.052000
32007-12-211.711000
42016-12-160.471000
52017-12-150.586000
62020-12-221.543000
72023-12-210.162000
82006-12-211.054000
92019-12-202.061000
102001-12-200.064000
112004-12-230.343000
122018-12-206.483000
132021-12-221.962000
142024-12-201.096000
152003-12-230.039000
162005-12-220.300000
172015-12-040.270000
182022-12-210.670000