f/overrides/event-backup/dgczx-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

1.8 KiB

1DateDividends
22021-01-290.048000
32021-03-310.051000
42021-09-300.045000
52022-08-310.048000
62025-05-300.062000
72019-03-220.057000
82019-11-220.057000
92020-06-220.045000
102026-05-290.064000
112022-12-300.054000
122024-07-310.062000
132026-02-270.060000
142026-04-300.065000
152019-07-220.054000
162021-04-300.048000
172022-06-300.051000
182021-10-290.048000
192021-11-220.294000
202023-03-310.056000
212024-09-300.065000
222026-03-310.068000
232019-10-220.051000
242020-10-220.048000
252021-08-310.051000
262022-07-290.054000
272020-05-220.054000
282021-05-280.048000
292021-11-300.045000
302026-06-300.065000
312022-05-310.048000
322023-02-280.050000
332023-05-310.057000
342020-12-310.048000
352022-02-280.042000
362023-12-290.056000
372024-05-310.062000
382024-08-300.064000
392019-04-220.057000
402020-04-220.051000
412020-09-220.048000
422024-10-310.072000
432026-07-310.065000
442023-07-310.056000
452023-09-290.053000
462024-02-290.055000
472019-05-220.060000
482019-12-190.042000
492020-01-220.054000
502024-01-310.059000
512019-09-200.054000
522020-07-220.048000
532020-11-200.111000
542024-06-280.061000
552022-10-310.052000
562023-01-310.055000
572024-04-300.059000
582020-08-210.051000
592022-01-310.048000
602026-01-300.063000
612025-02-280.058000
622019-02-220.048000
632021-06-300.048000
642023-10-310.055000
652024-12-310.065000
662025-07-310.071000
672025-10-310.068000
682021-02-260.045000
692021-12-310.048000
702023-08-310.054000
712024-11-290.068000
722025-01-310.062000
732025-03-310.078000
742025-06-300.063000
752025-11-280.064000
762020-11-300.060000
772021-07-300.048000
782022-09-300.040000
792025-04-300.063000
802025-09-300.074000
812020-02-210.054000
822023-06-300.054000
832024-03-280.060000
842022-04-290.045000
852023-04-280.053000
862023-11-300.052000
872025-12-310.064000
882019-06-210.060000
892019-08-220.054000
902022-03-310.048000
912020-03-200.048000
922022-11-300.051000
932025-08-290.064000