f/overrides/event-backup/nwmhx-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
22017-12-200.621000
32018-12-200.781000
42009-12-220.074000
52010-12-290.031000
62011-12-210.253000
72016-12-190.680000
82023-12-220.419000
92024-12-231.035000
102012-06-190.001000
112014-12-190.512000
122015-12-210.415000
132022-12-230.132000
142012-12-210.258000
152013-12-200.511000
162019-12-230.582000
172021-12-230.582000