f/overrides/event-backup/mxzhx-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

419 B

1DateCapital Gains
22018-12-280.535000
32019-12-300.141000
42020-12-300.212000
52021-09-070.696000
62024-12-300.086000
72024-09-100.468000
82015-12-300.158000
92016-09-090.022000
102016-12-290.186000
112017-09-080.406000
122020-09-080.501000
132022-09-080.885000
142023-09-080.295000
152023-12-280.101000
162017-12-280.299000
172018-09-110.693000
182019-09-101.237000
192021-12-300.619000
202022-12-290.152000
212025-09-090.426000