f/overrides/event-backup/demsx-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
22011-12-130.398000
32021-12-150.704000
42005-12-190.313000
52002-12-160.060000
62003-12-220.066000
72004-12-200.494000
82007-12-191.486000
92016-12-150.461000
102017-12-150.555000
112019-12-170.131000
121998-12-210.030000
132000-12-180.847000
142012-12-130.613000
152013-12-120.325000
162014-12-160.395000
171999-12-206.378000
182010-12-090.760000
192015-12-160.140000
202018-12-180.536000
212022-12-140.409000
222006-12-181.126000