f/overrides/event-backup/fsggx-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

355 B

1DateDividends
22017-12-080.313000
32020-12-040.249000
42022-12-160.331000
52013-12-130.224000
62021-12-280.012000
72024-12-130.420000
82019-12-060.381000
92021-12-030.385000
102013-12-260.001000
112014-12-120.297000
122018-12-070.302000
132016-12-090.229000
142023-12-150.416000
152025-12-120.504000
162012-12-140.182000
172014-12-260.004000
182015-12-110.259000