f/overrides/event-backup/hap-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
22011-12-230.660000
32013-12-230.830000
42017-12-180.750000
52022-12-191.614000
62012-12-240.853000
72024-12-231.208000
82009-12-230.247000
92020-12-210.944000
102025-12-221.364000
112018-12-200.919000
122019-12-231.000000
132021-12-201.019000
142008-12-260.065000
152010-12-230.314000
162014-12-220.851000
172015-12-210.789000
182016-12-190.643000
192023-12-181.598000