f/overrides/event-backup/mxykx-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
22015-09-040.133000
32016-12-280.749000
42023-09-060.111000
52023-12-270.837000
62024-12-271.264000
72016-09-070.100000
82017-09-060.250000
92017-12-271.106000
102020-12-290.915000
112022-09-060.330000
122022-12-280.477000
132018-09-070.155000
142019-09-060.076000
152024-09-060.114000
162025-09-050.161000
172015-12-291.436000
182018-12-271.294000
192019-12-270.595000
202020-09-040.100000
212021-09-030.471000
222021-12-291.460000