f/overrides/event-backup/ewy-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

595 B

1DateDividends
22015-12-211.202000
32017-12-192.176000
42001-08-240.104000
52010-06-230.273000
62006-12-200.333000
72019-12-161.308000
82020-12-140.630000
92003-12-220.152000
102004-12-230.100000
112011-12-200.373000
122013-12-180.898000
132016-12-210.645000
142024-12-171.298000
152005-12-230.260000
162007-12-240.369000
172014-12-170.663000
182021-12-131.679000
192023-12-201.651000
202008-06-250.612000
212008-12-230.189000
222022-12-130.697000
232003-12-310.084000
242018-12-180.790000
252012-12-180.365000
262025-12-162.037000
272009-06-230.201000
282009-12-220.114000
292010-12-210.169000
302011-06-220.327000