f/overrides/event-backup/nbrvx-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

475 B

1DateDividends
22004-12-161.159086
32006-12-150.104188
42008-12-150.549990
52013-12-161.202164
62016-12-160.108195
72025-12-152.949000
82005-12-151.369465
92009-12-160.084151
102010-12-170.017031
112012-12-140.125225
122014-12-152.297135
132015-12-172.234022
142017-12-151.554798
152019-12-160.229000
162023-12-150.495000
171999-12-130.020036
182007-12-171.948507
192021-12-140.142000
202024-12-161.626000
212011-12-160.061110
222018-12-171.639000
232020-12-140.008000
242022-12-150.210000