f/overrides/event-backup/cecyx-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

379 B

1DateCapital Gains
22018-12-061.250000
32021-06-141.599000
42021-12-105.750000
52025-12-102.661000
62017-12-061.943000
72020-06-191.674000
82024-06-141.176000
92017-06-200.902000
102022-12-120.376000
112023-12-120.620000
122024-12-112.265000
132019-12-120.376000
142019-06-180.385000
152020-12-100.023000
162022-06-221.253000
172023-06-220.306000
182025-06-130.764000
192018-06-191.081000