f/overrides/event-backup/nclex-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

795 B

1DateDividends
21991-12-300.123000
32018-12-272.520000
42019-12-271.604000
52021-12-295.558000
61994-12-290.103000
71996-12-302.627000
82000-12-285.580000
92011-12-231.248000
102016-12-272.531000
112010-12-271.538000
122024-12-270.760000
132025-12-291.907000
142012-12-272.021000
152017-12-272.099000
161987-12-160.090000
172002-04-260.055000
182004-12-220.268000
192020-12-291.686000
202023-12-270.674000
211999-12-300.054000
222001-12-280.036000
232006-12-280.843000
241988-12-290.097000
251989-12-290.145000
261992-12-300.082000
271995-12-280.300000
281998-12-301.263000
292007-12-281.762000
302008-12-230.063000
312009-12-300.001000
321990-12-280.121000
331997-12-302.492000
342013-12-261.612000
352014-12-292.625000
362015-12-291.877000
371993-12-300.087000
382002-12-200.031000
392005-12-211.632000
402022-12-281.510000