f/overrides/event-backup/mmizx-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

335 B

1DateDividends
22013-12-160.463000
32018-12-172.876000
42024-12-134.676000
52019-12-161.221000
62021-12-162.820000
72012-08-270.040000
82015-12-150.721000
92017-12-154.480000
102025-12-152.519000
112012-12-170.280000
122015-08-280.051000
132016-12-151.227000
142023-12-131.115000
152014-12-150.726000
162020-12-143.041000
172022-12-144.292000