f/overrides/event-backup/cphnx-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

479 B

1DateCapital Gains
22021-12-220.532000
32022-12-210.012000
42018-06-270.543000
52015-06-260.402000
62016-06-280.276000
72016-12-220.159000
82017-06-270.306000
92017-12-210.421000
102018-12-210.303000
112020-12-210.056000
122014-12-220.575000
132022-06-280.457000
142021-06-281.047000
152019-06-260.275000
162019-12-200.401000
172024-06-260.187000
182024-12-200.348000
192014-06-260.654000
202015-12-220.304000
212020-06-260.468000
222023-06-280.254000
232025-06-260.401000
242013-12-230.094000