f/overrides/event-backup/bufmx-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
22025-12-051.500000
32013-12-183.081000
42019-12-181.263000
52018-12-180.540000
62008-06-180.179000
72011-12-200.320000
82007-12-191.219000
92016-12-201.273000
102017-12-193.432000
112020-12-181.333000
122021-12-032.258000
132022-12-050.738000
142005-12-200.225000
152006-12-190.293000
162023-12-050.847000
172024-12-051.131000
182014-12-182.418000
192015-12-182.002000
202004-12-200.158000
212012-12-180.806000