f/overrides/event-backup/fzalx-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
22013-12-130.213000
32018-12-071.001000
42019-12-130.596000
52023-12-150.210000
62024-12-200.155000
72014-08-080.341000
82014-12-120.133000
92015-08-070.264000
102015-12-110.140000
112017-08-112.096000
122017-12-080.466000
132022-12-090.056000
142018-08-101.633000
152021-08-060.588000
162022-08-050.457000
172016-12-090.085000
182019-08-091.106000
192020-08-070.498000
202020-12-110.504000
212024-08-090.265000
222025-08-080.657000