f/overrides/event-backup/lcaix-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

339 B

1DateCapital Gains
22014-12-220.393000
32024-08-160.280000
42013-12-230.487000
52017-12-210.679000
62018-08-210.186000
72019-12-200.076000
82022-08-180.243000
92011-12-280.243000
102015-08-240.103000
112015-12-210.138000
122020-08-200.010000
132013-08-190.034000
142018-12-210.295000
152020-12-220.162000
162021-12-220.456000
172023-12-210.154000