f/overrides/event-backup/cccmx-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

3.0 KiB

1DateDividends
22023-03-300.017000
32025-02-270.020000
42025-11-260.023000
52014-12-300.016000
62019-03-280.018000
72019-04-290.017000
82019-09-270.016000
92026-03-300.023000
102015-01-290.017000
112019-06-270.016000
122020-01-300.015000
132026-04-290.023000
142015-08-280.018000
152016-06-290.017000
162016-07-280.017000
172021-09-290.010000
182023-08-300.018000
192014-05-290.017000
202014-08-280.016000
212020-03-300.017000
222020-12-300.108000
232021-10-280.009000
242024-08-290.020000
252024-12-300.022000
262025-12-300.022000
272017-06-290.017000
282023-07-280.018000
292026-02-260.021000
302016-02-260.018000
312017-03-300.016000
322018-09-270.016000
332025-05-290.023000
342014-04-290.015000
352014-09-290.016000
362017-12-280.027000
372018-08-300.017000
382022-07-280.011000
392023-02-270.014000
402024-11-270.024000
412016-01-280.016000
422017-10-300.015000
432018-05-300.017000
442018-11-290.016000
452020-04-290.013000
462014-06-270.017000
472020-09-290.012000
482021-01-280.012000
492021-04-290.009000
502015-10-290.017000
512016-03-300.017000
522019-01-300.017000
532025-06-270.022000
542026-05-280.023000
552014-02-270.018000
562015-05-280.017000
572015-06-290.018000
582016-10-280.017000
592019-02-270.015000
602024-01-300.019000
612026-07-300.024000
622015-07-300.017000
632022-12-290.015000
642024-04-290.020000
652025-01-300.021000
662017-01-300.017000
672018-06-280.016000
682022-11-290.013000
692024-03-270.020000
702018-04-270.016000
712020-06-290.013000
722021-05-270.009000
732022-05-270.011000
742022-10-280.014000
752023-06-290.017000
762016-05-270.017000
772024-10-300.020000
782013-12-300.018000
792014-10-300.016000
802015-04-290.017000
812018-01-300.016000
822018-10-300.016000
832014-07-300.016000
842015-11-270.017000
852018-02-270.014000
862020-05-280.014000
872020-08-280.013000
882020-10-290.011000
892022-01-280.014000
902025-08-280.022000
912014-03-280.016000
922017-02-270.018000
932019-05-300.018000
942019-07-300.017000
952021-12-300.074000
962023-01-300.015000
972024-05-300.020000
982025-04-290.022000
992025-10-300.021000
1002026-06-290.024000
1012018-12-280.030000
1022019-08-290.016000
1032022-06-290.010000
1042025-03-280.022000
1052014-11-260.017000
1062017-04-270.017000
1072022-09-290.012000
1082023-10-300.017000
1092014-01-300.017000
1102015-02-260.018000
1112016-09-290.017000
1122016-12-290.026000
1132017-07-280.016000
1142018-07-300.016000
1152020-11-270.013000
1162021-02-250.007000
1172021-11-290.009000
1182023-04-270.016000
1192023-09-280.018000
1202024-02-280.020000
1212016-04-280.017000
1222017-11-290.016000
1232023-05-300.018000
1242013-11-270.019000
1252015-12-300.017000
1262018-03-280.016000
1272024-07-300.020000
1282015-09-290.017000
1292019-12-300.029000
1302020-07-300.013000
1312021-07-290.008000
1322022-02-250.013000
1332023-12-280.020000
1342024-09-270.019000
1352017-09-280.016000
1362021-06-290.008000
1372024-06-270.020000
1382025-07-300.022000
1392026-01-290.023000
1402020-02-270.014000
1412016-08-300.016000
1422017-05-300.017000
1432017-08-300.016000
1442019-11-270.016000
1452023-11-290.021000
1462019-10-300.014000
1472022-04-280.010000
1482022-08-300.013000
1492015-03-300.017000
1502016-11-290.017000
1512021-03-300.009000
1522021-08-300.009000
1532022-03-300.010000
1542025-09-290.021000