f/overrides/event-backup/haitx-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
22020-12-290.337000
32017-12-270.349000
42018-12-270.307000
52019-12-270.336000
62021-12-101.248000
72023-12-270.507000
82025-12-290.348000
92015-12-290.077000
102018-12-171.230000
112021-12-290.386000
122022-12-121.116000
132023-12-110.914000
142025-12-116.124000
152015-12-110.426000
162016-12-160.193000
172019-12-100.616000
182022-12-280.506000
192024-12-114.430000
202024-12-270.400000
212016-12-280.208000
222017-12-150.755000