f/overrides/event-backup/mxkjx-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

575 B

1DateDividends
22018-12-270.716000
32022-06-230.039000
42015-09-040.246000
52015-12-290.596000
62016-06-240.064000
72016-12-280.404000
82023-09-060.005000
92022-12-280.170000
102024-12-271.241000
112025-12-290.482000
122018-09-070.201000
132019-06-240.057000
142020-09-040.006000
152020-06-240.054000
162022-09-060.151000
172023-06-230.055000
182021-06-230.059000
192025-09-050.223000
202017-06-230.042000
212017-12-271.417000
222018-06-220.054000
232019-12-270.067000
242023-12-270.154000
252024-09-060.005000
262021-12-293.196000
272015-06-190.050000
282017-09-060.251000
292020-12-290.044000