f/overrides/event-backup/mxzmx-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

435 B

1DateDividends
22015-09-040.127000
32017-12-270.012000
42018-06-220.196000
52020-06-240.023000
62024-12-270.202000
72019-03-280.128000
82019-06-240.143000
92019-09-060.066000
102015-12-290.112000
112017-06-230.166000
122019-12-270.143000
132020-09-040.105000
142021-06-230.017000
152022-06-230.061000
162022-09-060.033000
172015-06-190.236000
182016-06-240.118000
192018-12-270.098000
202023-06-230.068000
212025-09-050.024000
222025-12-290.207000