f/overrides/event-backup/fzacx-dividend.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

295 B

1DateDividends
22022-12-162.327000
32013-12-130.299000
42015-12-111.714000
52019-12-200.848000
62021-12-175.895000
72020-12-181.682000
82023-12-151.124000
92024-12-205.018000
102014-09-050.038000
112014-12-122.274000
122016-12-090.379000
132017-12-082.279000
142018-12-072.880000
152025-12-192.518000