f/overrides/event-backup/dlhax-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

415 B

1DateDividends
22015-12-041.512000
32019-12-052.015000
42020-12-041.553000
52023-12-290.147000
62024-12-033.290000
72009-12-071.302000
82014-12-052.084000
92021-12-031.476000
102022-12-022.274000
112025-12-022.869000
122007-12-240.301000
132013-12-060.420000
142016-12-051.392000
152008-12-220.347000
162012-12-060.037000
172017-12-050.675000
182018-12-060.411000
192023-12-041.310000
202010-12-060.660000
212011-12-060.757000