f/overrides/event-backup/afmc-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

495 B

1DateDividends
22025-09-250.017000
32024-03-210.022000
42024-06-270.028000
52020-09-240.044000
62021-06-240.055000
72021-09-230.021000
82024-09-260.022000
92025-03-270.076000
102025-12-120.157000
112019-12-130.060000
122020-06-250.058000
132026-06-250.052000
142022-06-240.061000
152022-09-230.089000
162022-12-230.114000
172023-06-270.046000
182025-06-260.081000
192026-03-260.057000
202021-12-230.148000
212022-03-250.050000
222023-12-220.185000
232024-12-130.132000
242020-03-260.023000
252020-12-240.100000