f/overrides/event-backup/nwjix-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

3.2 KiB

1DateDividends
22019-06-280.027000
32021-12-210.111000
42021-08-310.013000
52022-06-300.018000
62023-12-290.034000
72026-05-290.035000
82016-01-290.023000
92018-02-280.021000
102025-06-300.035000
112021-04-300.015000
122014-06-300.026000
132014-07-310.023000
142014-10-310.022000
152015-02-270.020000
162015-07-310.022000
172018-08-310.026000
182020-10-300.014000
192023-10-310.019000
202025-10-310.036000
212017-08-310.022000
222022-07-290.019000
232024-05-310.034000
242025-11-280.034000
252013-12-310.028000
262014-08-290.022000
272015-10-300.023000
282020-06-300.020000
292024-06-280.033000
302014-01-310.030000
312016-09-300.021000
322023-08-310.025000
332024-10-310.036000
342025-05-300.035000
352014-09-300.021000
362019-04-300.028000
372020-05-290.021000
382022-05-310.017000
392023-09-290.021000
402024-11-290.034000
412026-01-300.035000
422014-02-280.030000
432015-11-300.022000
442016-07-290.022000
452018-05-310.024000
462019-09-300.026000
472019-11-290.025000
482016-03-310.024000
492018-09-280.026000
502019-01-310.028000
512021-03-310.015000
522014-04-300.031000
532017-06-300.023000
542018-10-310.027000
552018-12-310.028000
562019-05-310.027000
572020-08-310.018000
582020-09-300.014000
592022-04-290.015000
602023-05-310.026000
612023-11-300.033000
622025-09-300.035000
632017-07-310.023000
642020-11-300.017000
652021-06-300.015000
662024-02-290.032000
672018-06-290.021000
682025-03-310.036000
692017-03-310.023000
702018-12-180.006000
712020-04-300.021000
722024-08-300.034000
732026-03-310.035000
742014-12-160.075000
752015-12-170.018000
762016-04-290.022000
772022-12-210.016000
782022-12-300.028000
792025-07-310.035000
802025-12-310.035000
812020-02-280.023000
822020-12-210.388000
832022-02-280.015000
842013-11-290.028000
852014-05-300.032000
862016-11-300.021000
872020-12-310.017000
882021-01-290.016000
892021-12-310.014000
902024-07-310.034000
912014-03-310.033000
922015-01-300.022000
932016-05-310.022000
942016-06-300.021000
952021-09-300.012000
962018-01-310.022000
972019-02-280.027000
982022-10-310.026000
992023-07-310.026000
1002017-02-280.020000
1012023-01-310.028000
1022015-03-310.022000
1032015-05-290.022000
1042016-10-310.021000
1052017-12-290.022000
1062018-04-300.024000
1072022-03-310.016000
1082024-09-300.033000
1092014-11-280.022000
1102016-12-300.021000
1112017-01-310.022000
1122023-02-280.027000
1132024-04-300.034000
1142026-04-300.034000
1152013-12-130.259000
1162017-04-280.022000
1172017-05-310.023000
1182017-09-290.022000
1192021-02-260.014000
1202021-11-300.015000
1212025-04-300.034000
1222014-12-310.023000
1232019-12-180.074000
1242022-09-300.024000
1252023-03-310.026000
1262023-12-200.066000
1272024-03-280.034000
1282024-12-310.035000
1292026-02-270.032000
1302015-08-310.022000
1312016-12-160.101000
1322017-10-310.022000
1332019-12-310.024000
1342022-08-310.022000
1352024-01-310.034000
1362025-08-290.036000
1372015-09-300.022000
1382018-03-290.024000
1392020-01-310.024000
1402023-06-300.025000
1412026-07-310.036000
1422020-07-310.020000
1432015-06-300.021000
1442016-08-310.022000
1452017-11-300.021000
1462018-07-310.022000
1472019-03-290.029000
1482019-08-300.027000
1492020-03-310.023000
1502022-11-300.026000
1512025-01-310.035000
1522026-06-300.035000
1532016-02-290.022000
1542019-07-310.028000
1552019-10-310.026000
1562021-05-280.015000
1572022-01-310.015000
1582025-02-280.033000
1592015-04-300.020000
1602015-12-310.023000
1612018-11-300.027000
1622021-07-300.015000
1632021-10-290.012000
1642023-04-280.025000