f/overrides/event-backup/mefzx-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

395 B

1DateDividends
22016-12-150.887000
32019-12-161.271000
42022-12-142.632000
52023-12-131.068000
62011-12-151.175000
72015-08-280.144000
82017-12-151.417000
92018-12-171.929000
102020-12-141.594000
112024-12-132.853000
122012-12-171.236000
132013-08-290.111000
142014-12-151.811000
152015-12-151.500000
162025-12-153.402000
172012-08-270.093000
182013-12-161.880000
192014-08-290.270000
202021-12-165.948000