f/overrides/event-backup/cfvax-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

2.6 KiB

1DateDividends
22017-01-310.020000
32019-05-310.025000
42020-10-300.015000
52021-10-290.016000
62022-03-310.013000
72016-06-300.019000
82019-12-310.024000
92018-04-300.021000
102016-10-310.019000
112017-04-280.020000
122019-04-300.024000
132021-07-300.018000
142021-08-310.018000
152021-12-310.014000
162025-09-300.027000
172026-02-270.023000
182026-04-300.023000
192017-07-310.019000
202019-11-290.023000
212019-12-130.081000
222020-01-310.022000
232021-06-300.018000
242022-09-300.020000
252023-08-310.015000
262017-08-310.020000
272020-03-310.023000
282024-02-290.023000
292024-12-310.027000
302017-02-280.018000
312017-11-300.019000
322023-03-310.018000
332024-06-280.023000
342025-01-310.026000
352018-11-300.022000
362019-01-310.026000
372019-08-300.025000
382020-08-310.016000
392015-10-300.018000
402018-09-280.024000
412023-02-280.017000
422017-09-290.012000
432019-03-290.027000
442021-11-300.016000
452022-05-310.013000
462022-08-310.020000
472022-10-310.021000
482023-07-310.015000
492026-01-300.026000
502018-06-290.021000
512021-04-300.017000
522016-09-300.017000
532023-05-310.011000
542025-06-300.027000
552017-06-300.018000
562022-12-300.011000
572018-05-310.022000
582018-12-310.026000
592020-02-280.020000
602021-02-260.018000
612021-03-310.019000
622015-12-310.020000
632020-07-310.011000
642025-04-300.026000
652018-02-280.019000
662022-01-310.018000
672022-11-300.011000
682023-10-310.027000
692025-07-310.028000
702017-05-310.018000
712017-12-290.020000
722025-08-290.028000
732016-08-310.014000
742018-01-310.020000
752019-09-300.023000
762022-02-280.011000
772024-03-280.026000
782016-02-290.020000
792020-05-290.016000
802020-12-310.014000
812021-05-280.019000
822023-04-280.019000
832024-04-300.026000
842018-10-310.023000
852019-06-280.022000
862022-06-300.013000
872024-09-300.025000
882020-11-300.015000
892021-01-290.016000
902021-12-160.027000
912022-07-290.018000
922023-12-280.026000
932024-07-310.026000
942024-10-310.026000
952024-11-290.026000
962026-05-290.028000
972015-07-310.017000
982016-07-290.020000
992016-12-150.033000
1002018-08-310.023000
1012024-05-310.027000
1022025-11-280.026000
1032017-03-310.021000
1042019-07-310.023000
1052020-12-110.262000
1062024-01-310.022000
1072016-11-300.019000
1082019-10-310.024000
1092023-01-310.011000
1102026-06-300.027000
1112019-02-280.023000
1122021-09-300.012000
1132023-09-290.017000
1142025-05-300.027000
1152025-10-310.028000
1162026-07-310.024000
1172018-03-290.023000
1182023-06-300.015000
1192026-03-310.026000
1202017-10-310.019000
1212018-07-310.023000
1222023-12-290.025000
1232024-08-300.027000
1242025-02-280.023000
1252020-06-300.016000
1262020-09-300.015000
1272022-04-290.018000
1282025-03-310.025000
1292025-12-310.027000
1302016-04-290.020000
1312020-04-300.023000
1322023-11-300.026000