f/overrides/event-backup/mmmpx-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

436 B

1DateDividends
22018-12-170.583000
32020-12-160.311000
42021-12-172.334000
52016-07-050.003000
62016-12-160.182000
72017-07-070.024000
82017-12-180.169000
92023-12-150.506000
102013-12-160.732000
112019-01-300.085000
122019-03-280.032000
132019-12-163.199000
142014-07-020.178000
152015-07-020.040000
162018-07-060.001000
172019-02-270.012000
182025-12-1613.578000
192014-12-161.216000
202015-12-160.149000
212022-12-160.841000
222024-12-160.278000