f/overrides/event-backup/acfix-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
22021-01-290.024000
32026-03-310.020000
42017-03-310.013000
52020-03-310.013000
62020-04-300.021000
72024-10-310.035000
82016-09-150.042000
92017-04-280.032000
102022-12-300.042000
112020-12-310.023000
122022-04-290.023000
132024-03-280.036000
142022-10-310.031000
152024-12-310.050000
162025-02-280.029000
172018-03-290.013000
182022-06-300.026000
192025-01-310.031000
202021-10-290.025000
212018-10-310.032000
222022-07-290.027000
232026-07-310.034000
242019-08-300.028000
252022-11-300.043000
262023-06-300.037000
272025-11-280.036000
282012-12-180.034000
292015-03-190.039000
302018-02-280.017000
312022-05-310.024000
322017-09-290.023000
332019-01-310.032000
342020-08-310.027000
352020-05-290.027000
362021-12-310.014000
372023-11-300.046000
382021-09-300.025000
392024-02-290.041000
402025-10-310.034000
412017-05-310.025000
422019-05-310.027000
432021-06-300.027000
442026-04-300.026000
452026-05-290.031000
462018-12-310.028000
472024-07-310.038000
482025-09-300.035000
492024-06-280.040000
502026-02-270.025000
512013-03-190.054000
522016-12-150.096000
532022-09-300.026000
542022-08-310.032000
552023-10-310.040000
562018-01-310.017000
572018-08-310.034000
582018-09-280.033000
592019-02-280.028000
602021-03-310.012000
612015-09-170.058000
622017-03-160.033000
632018-06-290.019000
642021-05-280.017000
652022-02-280.020000
662023-02-280.038000
672023-07-310.037000
682017-07-310.019000
692018-05-310.013000
702019-03-290.026000
712021-04-300.016000
722025-12-310.045000
732020-01-310.029000
742020-07-310.022000
752020-11-300.023000
762025-03-310.030000
772016-06-160.046000
782021-02-260.019000
792024-08-300.036000
802019-11-290.030000
812021-11-300.028000
822023-09-290.039000
832025-05-300.030000
842018-07-310.021000
852019-06-280.026000
862019-10-310.029000
872019-09-300.026000
882022-01-310.017000
892024-04-300.037000
902013-09-180.098000
912014-12-090.100000
922017-12-140.048000
932013-06-180.174000
942019-07-310.030000
952020-10-300.021000
962025-07-310.037000
972017-10-310.027000
982021-08-310.028000
992023-01-310.038000
1002023-03-310.036000
1012020-02-280.025000
1022020-09-300.034000
1032024-05-310.040000
1042015-06-180.085000
1052015-12-160.094000
1062017-11-300.012000
1072025-08-290.031000
1082014-06-190.127000
1092021-07-300.027000
1102023-05-310.037000
1112014-03-200.064000
1122017-08-310.024000
1132026-06-300.038000
1142022-03-310.025000
1152025-04-300.036000
1162013-12-180.077000
1172017-06-300.017000
1182017-12-290.014000
1192023-08-310.037000
1202024-09-300.037000
1212026-01-300.027000
1222014-09-180.070000
1232018-11-300.030000
1242020-06-300.030000
1252019-12-310.032000
1262023-04-280.038000
1272023-12-290.043000
1282024-01-310.040000
1292024-11-290.031000
1302016-03-170.049000
1312018-04-300.020000
1322019-04-300.027000
1332025-06-300.033000