f/overrides/event-backup/mstqx-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
22021-12-171.943000
32023-12-280.114000
42019-03-290.509000
52020-12-300.140000
62023-12-150.385000
72024-12-201.259000
82025-12-192.247000
92019-12-300.090000
102020-12-180.116000
112021-12-300.127000
122022-12-160.895000
132018-12-310.015000
142019-12-200.135000
152022-12-290.072000
162024-12-300.117000
172025-12-300.082000