f/overrides/event-backup/fdewx-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

575 B

1DateDividends
22020-12-300.291000
32014-12-290.229000
42019-12-301.653000
52015-05-150.005000
62022-05-130.012000
72024-05-100.009000
82024-12-300.414000
92022-12-290.313000
102023-12-280.364000
112018-05-110.038000
122021-05-140.047000
132021-12-300.335000
142012-05-110.004000
152017-05-120.024000
162025-12-300.482000
172012-12-280.164000
182023-05-120.002000
192015-12-290.271000
202017-12-280.267000
212018-12-280.290000
222020-05-080.042000
232013-12-270.168000
242014-05-090.006000
252025-05-090.019000
262011-12-290.274000
272013-05-100.003000
282016-12-280.309000
292019-05-100.033000