f/overrides/event-backup/eimgx-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

375 B

1DateDividends
22016-12-221.474000
32019-01-310.021000
42010-04-300.033000
52014-12-230.456000
62019-03-290.021000
72023-12-190.471000
82024-12-170.986000
92025-12-162.046000
102019-02-280.019000
112019-04-300.021000
122019-12-171.717000
132020-12-150.091000
142021-12-132.818000
152015-12-231.205000
162017-12-213.004000
172018-12-201.784000
182022-12-200.826000
192024-12-270.117000