f/overrides/event-backup/gcinx-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

435 B

1DateDividends
22019-12-300.007000
32024-06-270.134000
42025-06-270.092000
52019-02-010.025000
62019-06-270.133000
72021-12-300.341000
82023-12-280.023000
92026-06-290.009000
102018-06-280.141000
112018-12-280.080000
122020-06-290.075000
132024-12-300.077000
142017-06-290.086000
152017-12-280.076000
162021-06-290.098000
172022-06-290.099000
182022-12-290.022000
192023-06-290.120000
202025-12-300.531000
212019-03-010.028000
222019-04-010.030000