f/overrides/event-backup/mgfix-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

379 B

1DateCapital Gains
22001-09-250.024000
32003-12-260.230000
42014-12-260.179000
52016-12-270.342000
62005-12-270.152000
72008-12-260.285000
82015-12-280.379000
92017-12-270.156000
102018-12-270.190000
112021-03-291.800000
121998-12-280.850000
132000-08-280.170000
142004-12-280.117000
152007-12-260.005000
162019-12-160.163000
172022-12-150.041000
182020-12-160.068000
192021-12-150.576000