f/overrides/event-backup/aaltx-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
22018-12-280.647000
32020-12-280.587000
42008-12-290.347000
52010-12-290.295000
62012-12-280.244000
72015-12-300.588000
82007-12-270.150000
92013-12-300.241000
102014-12-300.482000
112025-12-241.369000
122011-12-290.192000
132016-12-290.447000
142017-12-280.357000
152019-12-300.677000
162021-12-270.907000
172022-12-231.120000
182023-12-220.438000
192024-12-260.691000
202009-12-290.215000