f/overrides/event-backup/eaamx-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
22018-06-280.037000
32023-05-310.055000
42022-07-290.040000
52025-04-300.054000
62026-01-300.051000
72016-09-290.018000
82017-06-290.039000
92017-09-280.028000
102021-11-300.033000
112023-03-310.053000
122012-04-300.029000
132013-06-270.066000
142019-10-310.040000
152021-07-300.034000
162022-04-290.035000
172023-10-310.059000
182024-11-290.056000
192025-07-310.055000
202012-12-270.009000
212015-03-300.074000
222020-12-310.039000
232021-06-300.035000
242023-02-280.051000
252026-04-300.049000
262012-03-300.035000
272015-06-290.063000
282019-05-300.045000
292021-01-290.036000
302020-06-300.037000
312012-02-290.030000
322015-12-300.157000
332019-01-300.036000
342019-07-300.051000
352012-08-310.030000
362017-03-300.023000
372020-04-300.035000
382020-11-300.034000
392013-03-280.025000
402022-11-300.049000
412023-04-280.052000
422025-11-280.052000
432025-08-290.055000
442018-12-280.050000
452022-05-310.037000
462022-09-300.047000
472024-08-300.058000
482026-06-300.050000
492012-05-310.033000
502018-09-270.040000
512021-09-300.035000
522025-02-280.052000
532024-12-310.061000
542025-01-310.055000
552019-02-270.040000
562021-08-310.035000
572021-12-310.037000
582024-04-300.057000
592012-09-280.029000
602016-12-290.111000
612020-07-310.035000
622021-10-290.033000
632019-12-100.019000
642020-05-290.035000
652024-09-300.059000
662015-09-290.042000
672023-12-290.088000
682024-02-290.058000
692024-07-310.060000
702020-02-280.042000
712025-10-310.053000
722013-12-300.089000
732020-08-310.036000
742023-11-300.059000
752014-06-270.071000
762020-10-300.034000
772022-12-300.051000
782026-07-310.050000
792012-10-310.028000
802018-03-280.037000
812019-03-280.045000
822023-01-310.052000
832024-10-310.056000
842012-06-290.031000
852021-02-260.034000
862021-03-310.032000
872024-03-280.060000
882012-12-310.030000
892019-11-290.040000
902022-08-310.044000
912024-05-310.059000
922021-05-280.034000
932022-10-310.046000
942025-12-310.071000
952019-09-270.031000
962020-03-310.039000
972022-01-310.035000
982023-06-300.055000
992012-07-310.028000
1002012-11-300.028000
1012016-03-300.105000
1022019-06-270.039000
1032024-01-310.060000
1042026-03-310.050000
1052014-12-300.119000
1062020-09-300.035000
1072023-07-310.057000
1082025-03-310.056000
1092013-09-270.059000
1102014-09-290.049000
1112017-12-280.194000
1122018-11-290.038000
1132020-01-310.045000
1142022-03-310.033000
1152013-02-280.024000
1162023-09-290.057000
1172025-05-300.055000
1182013-01-310.027000
1192016-06-290.055000
1202019-04-290.046000
1212026-02-270.049000
1222019-08-290.044000
1232023-08-310.060000
1242025-06-300.055000
1252025-09-300.053000
1262019-12-310.039000
1272026-05-290.050000
1282024-06-280.059000
1292014-03-280.062000
1302021-04-300.033000
1312022-02-280.035000
1322022-06-300.040000