f/overrides/event-backup/dfus-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
22023-09-190.160000
32024-09-170.155000
42025-03-250.138000
52025-06-240.179000
62022-06-220.154000
72022-12-200.192000
82023-06-210.159000
92023-12-190.234000
102024-03-190.118000
112024-06-180.161000
122024-12-170.229000
132021-12-160.198000
142022-09-200.158000
152026-03-240.169000
162021-06-220.109000
172021-09-210.134000
182022-03-220.112000
192023-03-210.134000
202025-09-230.179000
212025-12-160.157000
222026-06-230.199000