f/overrides/event-backup/nlr-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
22010-12-233.192000
32015-12-211.486000
42018-12-201.936000
52020-12-211.096000
62021-12-201.091000
72012-12-241.896000
82014-12-221.273000
92016-12-191.719000
102025-12-223.166000
112013-12-230.333000
122017-12-182.382000
132019-12-231.179000
142024-12-230.614000
152007-12-245.835000
162009-12-231.254000
172011-12-235.796000
182022-12-191.109000
192023-12-183.258000