f/overrides/event-backup/mfdx-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

695 B

1DateDividends
22019-10-010.160000
32020-07-010.130000
42021-10-010.130000
52022-10-030.110000
62025-12-310.330000
72021-04-010.100000
82022-07-010.310000
92023-10-020.200000
102024-07-010.400000
112024-10-010.254000
122023-04-030.180000
132022-12-290.210000
142024-12-310.150000
152026-04-010.250000
162019-04-010.090000
172019-07-010.220000
182020-10-010.030000
192021-12-300.410000
202022-04-010.100000
212023-12-280.180000
222025-10-010.210000
232026-07-010.420000
242023-07-030.350000
252018-07-020.250000
262018-10-010.225000
272019-12-300.280000
282020-04-010.110000
292021-07-010.240000
302018-12-280.190000
312025-04-010.220000
322025-07-010.380000
332017-12-280.191000
342020-12-300.160000
352024-04-010.130000