f/overrides/event-backup/cefs-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

2.2 KiB

1DateDividends
22019-04-220.140000
32024-09-240.140000
42022-08-220.140000
52023-04-200.140000
62023-05-220.140000
72020-07-200.140000
82021-06-210.140000
92024-10-240.140000
102026-04-280.140000
112017-05-220.137000
122018-01-220.140000
132019-02-200.140000
142024-04-240.140000
152024-05-230.140000
162026-06-260.140000
172018-02-200.140000
182019-07-220.140000
192019-09-200.140000
202020-10-200.140000
212021-04-200.140000
222023-07-200.140000
232018-07-200.140000
242021-11-220.140000
252017-06-200.140000
262020-06-220.140000
272022-05-200.140000
282023-09-200.140000
292018-08-200.140000
302023-08-210.140000
312024-01-240.140000
322025-09-290.140000
332017-12-260.094000
342021-03-220.140000
352021-12-200.678000
362019-08-200.140000
372020-01-210.140000
382020-09-210.140000
392020-11-200.140000
402024-08-260.140000
412018-11-200.140000
422019-11-200.140000
432021-02-220.140000
442024-02-260.140000
452018-03-200.140000
462022-01-200.140000
472022-06-210.140000
482025-05-290.140000
492018-06-200.140000
502019-05-200.140000
512020-12-210.140000
522026-03-270.140000
532022-02-220.140000
542023-11-200.140000
552025-06-260.140000
562026-02-250.140000
572018-12-200.140000
582020-02-200.140000
592022-04-200.140000
602022-12-200.413000
612023-01-200.140000
622023-12-200.206000
632025-01-300.140000
642019-03-200.140000
652023-02-210.140000
662022-11-210.140000
672023-10-200.140000
682022-09-200.140000
692017-10-200.140000
702021-07-200.140000
712021-10-200.140000
722022-07-200.140000
732021-01-200.140000
742024-07-240.140000
752017-07-200.140000
762018-10-220.140000
772022-10-200.140000
782024-11-250.140000
792017-09-200.140000
802018-04-200.140000
812019-12-200.140000
822020-08-200.140000
832025-08-280.140000
842018-05-210.140000
852018-09-200.140000
862019-01-220.140000
872023-03-200.140000
882017-04-200.134000
892019-06-200.028000
902019-10-210.140000
912020-03-200.140000
922020-04-200.140000
932021-09-200.140000
942024-06-240.140000
952025-07-300.140000
962025-02-270.140000
972025-11-250.140000
982026-05-270.140000
992021-08-200.140000
1002025-12-300.266000
1012017-12-200.140000
1022020-05-200.140000
1032024-03-250.140000
1042017-08-210.140000
1052025-04-290.140000
1062024-12-300.342000
1072025-03-270.140000
1082026-01-280.140000
1092026-07-290.140000
1102022-03-210.140000
1112017-11-200.140000
1122018-12-240.047000
1132021-05-200.140000
1142023-06-200.140000
1152025-10-300.140000