f/overrides/event-backup/fsnzx-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
22023-05-120.063000
32024-12-300.076000
42018-12-280.311000
52019-12-300.136000
62021-12-300.685000
72025-05-090.338000
82017-12-280.194000
92020-05-080.302000
102022-12-290.162000
112020-12-300.232000
122022-05-060.854000
132023-12-280.007000
142024-05-100.027000
152018-05-110.323000
162019-05-100.471000
172021-05-140.671000