f/overrides/event-backup/dbmyx-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

296 B

1DateDividends
22013-12-042.100000
32019-01-310.035000
42025-12-0411.164000
52018-12-031.864000
62024-12-040.062000
72015-12-081.030000
82019-02-280.031000
92021-12-013.131000
102019-03-290.032000
112019-04-300.036000
122020-12-013.087000
132014-12-171.812000
142016-12-070.376000
152017-12-071.805000