f/overrides/event-backup/mxnzx-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

439 B

1DateCapital Gains
22023-09-060.098000
32025-09-050.064000
42015-09-040.145000
52016-12-280.542000
62019-09-060.041000
72019-12-270.534000
82022-09-060.139000
92018-09-070.153000
102020-12-290.614000
112021-09-030.153000
122021-12-290.647000
132016-09-070.034000
142017-12-270.702000
152020-09-040.248000
162024-09-060.153000
172024-12-270.257000
182015-12-290.568000
192017-09-060.134000
202018-12-270.855000
212022-12-280.534000
222023-12-270.728000