f/overrides/event-backup/anazx-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

3.1 KiB

1DateDividends
22014-03-310.022000
32019-12-040.103000
42020-03-310.014000
52022-07-290.015000
62025-02-280.019000
72014-05-300.021000
82015-06-300.017000
92018-05-310.020000
102020-07-310.015000
112022-09-300.015000
122020-01-310.016000
132021-12-310.012000
142022-11-300.018000
152015-03-310.014000
162016-06-300.017000
172016-07-290.019000
182018-07-310.019000
192018-11-300.019000
202024-09-300.020000
212024-10-310.021000
222026-01-300.022000
232014-11-280.017000
242021-12-030.210000
252022-04-290.012000
262022-06-300.014000
272023-10-310.021000
282017-10-310.019000
292024-02-290.019000
302024-04-300.021000
312024-06-280.021000
322026-03-310.022000
332017-09-290.017000
342020-04-300.015000
352022-02-280.010000
362023-08-310.021000
372026-06-300.023000
382022-12-300.019000
392015-02-270.014000
402015-07-310.018000
412017-04-280.017000
422018-01-310.018000
432020-12-310.014000
442014-08-290.020000
452020-10-300.014000
462022-12-020.409000
472025-09-300.021000
482024-11-290.022000
492016-12-070.065000
502017-07-310.016000
512020-02-280.013000
522021-01-290.013000
532024-01-310.019000
542014-01-310.022000
552014-10-310.018000
562017-08-310.018000
572019-04-300.018000
582023-02-280.016000
592017-11-300.020000
602019-01-310.018000
612019-03-290.016000
622014-02-280.020000
632016-02-290.014000
642016-05-310.016000
652016-10-310.017000
662017-05-310.018000
672019-05-310.020000
682019-08-300.016000
692020-06-300.013000
702016-12-300.018000
712019-10-310.016000
722019-12-310.016000
732025-05-300.022000
742015-10-300.015000
752016-03-310.017000
762019-06-280.016000
772023-05-310.019000
782025-03-310.021000
792016-04-290.018000
802016-08-310.019000
812018-12-060.033000
822019-11-290.015000
832025-01-310.023000
842020-05-290.015000
852021-06-300.013000
862025-06-300.021000
872025-10-310.023000
882025-12-310.023000
892015-12-310.016000
902017-12-290.017000
912018-08-310.018000
922018-10-310.019000
932023-09-290.020000
942026-04-300.022000
952016-09-300.018000
962017-01-310.016000
972021-09-300.012000
982022-10-310.015000
992025-11-280.020000
1002025-04-300.021000
1012017-03-310.020000
1022022-01-310.010000
1032022-03-310.012000
1042023-11-300.020000
1052024-03-280.021000
1062014-07-310.025000
1072019-02-280.015000
1082024-05-310.024000
1092023-06-300.022000
1102023-12-290.020000
1112024-08-300.025000
1122016-11-300.017000
1132017-02-280.015000
1142018-12-310.019000
1152019-07-310.015000
1162020-11-300.013000
1172014-06-300.020000
1182015-12-090.140000
1192020-08-310.014000
1202020-09-300.014000
1212025-07-310.020000
1222014-12-310.017000
1232015-05-290.019000
1242022-08-310.017000
1252024-07-310.023000
1262026-02-270.020000
1272013-12-310.021000
1282018-02-280.016000
1292021-08-310.012000
1302023-01-310.018000
1312014-04-300.021000
1322014-12-050.177000
1332018-09-280.015000
1342021-10-290.012000
1352021-11-300.011000
1362026-05-290.024000
1372017-06-300.020000
1382019-09-300.014000
1392021-04-300.013000
1402021-07-300.013000
1412023-04-280.018000
1422015-04-300.017000
1432015-11-300.015000
1442021-03-310.013000
1452022-05-310.014000
1462023-03-310.023000
1472015-08-310.016000
1482025-08-290.022000
1492014-09-300.017000
1502018-04-300.020000
1512018-06-290.018000
1522020-12-040.060000
1532021-05-280.014000
1542015-01-300.015000
1552016-01-290.018000
1562018-03-290.024000
1572021-02-260.013000
1582024-12-310.020000
1592015-09-300.015000
1602023-07-310.019000