f/overrides/event-backup/jcsrx-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
22019-04-300.031000
32025-08-290.033000
42026-06-300.034000
52018-04-300.032000
62018-11-300.033000
72021-12-310.026000
82023-03-310.028000
92026-01-300.034000
102017-10-310.033000
112018-12-200.010000
122021-01-290.026000
132022-05-310.024000
142023-09-290.029000
152025-05-300.033000
162018-08-310.032000
172026-03-310.033000
182019-05-310.031000
192021-09-300.025000
202024-07-310.030000
212025-07-310.033000
222019-02-280.032000
232023-11-300.030000
242024-03-280.030000
252024-06-280.030000
262019-01-310.032000
272018-03-290.031000
282018-12-310.032000
292019-07-310.031000
302020-07-310.028000
312020-09-300.027000
322021-04-300.026000
332020-12-310.026000
342025-06-300.033000
352022-09-300.027000
362023-02-280.028000
372026-07-310.034000
382021-02-260.027000
392017-08-310.001000
402022-01-310.026000
412023-08-310.028000
422024-10-310.030000
432024-01-310.030000
442022-07-290.026000
452023-05-310.028000
462024-04-300.030000
472025-03-310.031000
482025-11-280.033000
492019-12-310.029000
502020-03-310.029000
512022-04-290.025000
522024-12-310.030000
532022-12-300.028000
542018-01-310.032000
552019-12-190.079000
562020-04-300.029000
572021-05-280.026000
582021-06-300.026000
592021-07-300.025000
602024-11-290.031000
612020-06-300.029000
622021-10-290.025000
632020-05-290.028000
642022-02-280.028000
652023-07-310.028000
662025-02-280.031000
672026-05-290.034000
682019-10-310.030000
692022-11-300.028000
702018-05-310.032000
712018-07-310.032000
722019-09-300.031000
732019-11-290.030000
742021-11-300.027000
752022-08-310.026000
762017-09-290.034000
772017-11-300.033000
782020-10-300.027000
792020-11-300.027000
802022-10-310.027000
812022-12-190.034000
822025-09-300.034000
832020-01-310.029000
842025-12-310.034000
852026-04-300.034000
862017-12-290.032000
872018-10-310.032000
882021-08-310.024000
892024-05-310.029000
902024-09-300.030000
912025-10-310.033000
922019-08-300.031000
932021-12-170.066000
942018-06-290.032000
952019-03-290.031000
962022-03-310.027000
972025-01-310.031000
982021-03-310.027000
992022-06-300.030000
1002023-01-310.028000
1012026-02-270.034000
1022023-10-310.029000
1032019-06-280.031000
1042020-02-280.030000
1052020-08-310.027000
1062023-06-300.028000
1072024-02-290.030000
1082018-09-280.032000
1092023-12-290.030000
1102024-08-300.030000
1112018-02-280.032000
1122023-04-280.028000
1132025-04-300.032000