f/overrides/event-backup/ixc-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

915 B

1DateDividends
22008-12-220.385000
32019-06-170.677000
42021-12-130.668000
52001-12-240.024000
62004-12-230.424333
72015-06-240.527000
82002-12-230.303333
92009-12-210.427000
102013-12-170.543000
112015-12-210.531000
122018-06-190.489000
132023-12-200.636000
142026-06-150.724000
152003-12-220.206333
162005-12-230.367000
172018-12-180.540000
182019-12-161.482000
192025-06-160.697000
202008-06-230.401333
212014-06-240.597000
222020-12-140.596000
232022-12-131.096000
242023-06-070.713000
252024-12-170.845000
262006-12-210.600333
272014-12-190.526000
282011-12-190.437000
292013-06-250.529000
302016-06-210.516000
312016-12-220.481000
322020-06-150.391000
332024-06-110.898000
342003-12-160.076000
352007-12-240.927667
362025-12-160.848000
372010-12-200.348000
382011-06-210.442000
392012-06-200.505000
402012-12-170.469000
412017-06-200.525000
422009-06-220.322000
432010-06-210.371000
442022-06-090.761000
452017-12-210.560000
462021-06-100.427000