f/overrides/event-backup/grmix-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

339 B

1DateCapital Gains
22012-12-190.104000
32016-12-160.810000
42019-12-180.703000
52021-12-210.943000
62022-12-210.080000
72000-12-180.171000
82013-12-181.065000
92014-12-160.584000
102017-12-180.831000
112023-12-200.027000
122011-12-190.071000
132015-12-171.341000
142024-12-190.470000
152006-12-270.049000
162018-12-182.003000
172005-12-280.077000