f/overrides/event-backup/ius-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

635 B

1DateDividends
22019-06-240.123000
32021-09-200.141000
42023-09-180.204000
52024-03-180.174000
62025-03-240.213000
72019-09-230.123000
82022-03-210.159000
92025-12-220.211000
102020-09-210.130000
112026-06-220.205000
122024-09-230.207000
132018-12-240.160000
142021-06-210.123000
152021-12-200.180000
162019-12-230.132000
172026-03-230.215000
182020-06-220.121000
192022-06-210.189000
202022-09-190.156000
212022-12-190.147000
222023-03-200.172000
232023-06-200.174000
242023-12-180.195000
252024-12-230.197000
262025-06-230.207000
272025-09-220.214000
282019-03-180.112000
292020-03-230.147000
302020-12-210.143000
312021-03-220.147000
322024-06-240.177000