f/overrides/event-backup/nbfcx-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

575 B

1DateDividends
22004-12-160.025533
32009-12-160.182382
42010-12-170.133139
52017-12-153.941273
62019-12-163.148000
72000-12-152.589823
82012-12-140.215211
92016-12-164.198432
101998-12-290.054715
112001-12-143.246398
122023-12-150.095000
132011-12-160.136786
142013-12-165.267190
151999-12-152.991063
162020-12-141.599000
172003-12-170.012767
182005-12-157.045413
192006-12-156.591282
202008-12-153.129674
212021-12-145.772000
221997-12-290.911909
232007-12-178.081343
241996-12-270.109429
252014-12-157.982856
262015-12-172.292540
272018-12-171.976000
282024-12-160.024000
292025-12-153.229000