f/overrides/event-backup/mxvhx-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
22023-09-060.034000
32015-09-040.076000
42015-12-290.758000
52019-12-270.243000
62022-09-060.108000
72024-12-271.210000
82025-09-050.058000
92018-12-270.936000
102019-10-230.565000
112021-09-030.071000
122022-12-280.633000
132020-09-040.068000
142023-12-270.560000
152016-09-070.161000
162017-09-060.175000
172017-12-270.760000
182019-09-060.045000
192016-12-280.491000
202018-09-070.174000
212020-12-290.296000
222021-12-290.613000