f/overrides/event-backup/fncrx-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

395 B

1DateDividends
22016-12-150.134000
32019-12-160.063000
42021-12-150.080000
52023-12-200.458000
62024-12-200.354000
72007-12-143.023000
82006-12-152.285000
92011-12-150.163000
102022-12-200.539000
112005-12-150.072000
122009-12-150.194000
132010-12-150.445000
142014-12-150.008000
152018-12-170.395000
162025-12-220.376000
172008-12-151.501000
182015-12-150.005000
192020-12-150.198000
202010-04-300.012000