f/overrides/event-backup/mignx-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

379 B

1DateCapital Gains
22025-07-310.328000
32020-06-300.003000
42024-07-310.015000
52019-12-172.256000
62020-12-152.726000
72021-06-300.696000
82024-12-193.508000
92015-12-171.287000
102019-06-280.092000
112018-12-182.452000
122021-12-143.693000
132022-07-290.056000
142014-12-180.778000
152016-12-201.182000
162022-12-131.282000
172023-12-211.454000
182013-12-170.235000
192017-12-191.663000