f/overrides/event-backup/iemg-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
22026-06-150.658000
32016-06-220.381000
42020-06-150.436000
52021-06-100.471000
62021-12-131.361000
72012-12-270.008000
82013-06-270.416000
92018-06-190.442000
102023-12-200.977000
112024-12-171.163000
122015-12-210.546000
132018-12-180.859000
142019-06-170.491000
152025-12-161.139000
162017-12-190.973000
172023-06-070.483000
182024-06-110.509000
192025-06-160.710000
202012-12-180.112000
212014-12-170.639000
222022-12-130.659000
232017-06-200.361000
242015-06-250.448000
252019-12-161.201000
262022-06-090.604000
272020-12-140.723000
282013-12-180.461000
292014-06-250.444000
302016-12-210.586000