f/overrides/event-backup/mlfax-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

435 B

1DateDividends
22018-12-270.837000
32012-12-270.128000
42008-12-260.239000
52010-12-280.140000
62011-12-270.176000
72016-12-280.939000
82021-12-281.762000
92024-12-261.001000
102005-12-290.155000
112009-12-280.173000
122013-12-270.168000
132020-12-290.528000
142025-12-231.564000
152006-12-270.137000
162014-12-290.236000
172015-12-290.469000
182017-12-270.548000
192019-12-260.956000
202022-12-281.021000
212023-12-270.609000
222007-12-280.670000