f/overrides/event-backup/dbmf-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
22024-03-260.157000
32024-09-270.251000
42025-12-301.168000
52026-03-300.119000
62021-12-302.677000
72023-12-270.750000
82024-06-270.254000
92024-12-270.841000
102025-03-270.179000
112025-06-270.171000
122025-09-290.141000
132026-06-290.153000
142020-12-290.202000
152019-12-272.290000
162020-03-270.017000
172022-12-282.247000
182019-06-270.030000
192019-09-270.047000