f/overrides/event-backup/msgzx-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

355 B

1DateDividends
22011-12-151.716000
32013-12-163.114000
42018-12-172.729000
52020-12-141.399000
62012-12-170.900000
72014-08-290.555000
82014-12-153.098000
92021-12-164.488000
102015-08-280.239000
112019-12-161.823000
122022-12-140.004000
132024-12-130.827000
142011-08-250.361000
152013-08-290.125000
162015-12-153.175000
172017-12-150.869000
182025-12-152.811000