f/overrides/event-backup/nwcix-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
22020-07-310.026000
32021-03-310.020000
42022-08-310.025000
52022-09-300.026000
62025-12-180.294000
72017-05-310.027000
82017-12-180.001000
92020-02-280.024000
102023-11-300.031000
112024-02-290.030000
122026-06-170.076000
132014-03-310.025000
142014-09-300.024000
152020-03-310.026000
162014-07-310.025000
172015-04-300.027000
182015-08-310.026000
192018-05-310.029000
202020-09-300.023000
212013-09-300.026000
222013-10-310.018000
232013-11-290.024000
242024-04-300.032000
252026-03-180.100000
262018-03-290.028000
272020-08-310.025000
282021-02-260.020000
292016-07-290.029000
302016-09-300.029000
312017-07-310.026000
322022-07-290.024000
332019-11-290.024000
342020-12-210.190000
352022-03-310.020000
362019-06-280.028000
372021-01-290.022000
382014-02-280.025000
392015-05-290.027000
402018-01-310.027000
412013-07-310.027000
422024-05-310.034000
432017-10-310.026000
442021-07-300.022000
452020-01-310.025000
462014-12-310.025000
472015-10-300.026000
482019-07-310.027000
492018-10-310.029000
502022-01-310.021000
512014-11-280.025000
522018-02-280.025000
532018-06-290.029000
542023-10-310.031000
552017-06-300.026000
562019-10-310.025000
572022-10-310.027000
582016-05-310.029000
592016-10-310.029000
602021-12-210.086000
612023-02-280.028000
622024-01-310.032000
632014-01-310.027000
642014-04-300.024000
652016-04-290.028000
662022-05-310.023000
672022-11-300.027000
682017-04-280.027000
692018-11-300.028000
702019-09-300.025000
712018-08-310.028000
722018-09-280.027000
732019-04-300.028000
742020-06-300.026000
752024-09-300.033000
762013-06-280.026000
772014-05-300.021000
782017-03-310.028000
792024-10-310.025000
802017-11-300.026000
812018-07-310.029000
822024-08-300.034000
832024-12-310.007000
842015-12-170.002000
852020-11-300.022000
862021-08-310.020000
872019-12-180.003000
882019-12-310.025000
892021-09-300.019000
902022-06-300.023000
912022-12-300.028000
922015-11-300.026000
932016-02-290.027000
942017-09-290.026000
952023-04-280.030000
962015-02-270.024000
972016-01-290.027000
982016-12-300.028000
992018-12-310.029000
1002021-10-290.019000
1012023-01-310.029000
1022024-06-280.034000
1032014-12-160.011000
1042016-11-300.027000
1052017-12-290.027000
1062021-05-280.022000
1072023-07-310.031000
1082014-08-290.025000
1092019-08-300.025000
1102021-06-300.021000
1112019-02-280.027000
1122021-12-310.020000
1132022-04-290.022000
1142014-10-310.025000
1152015-07-310.027000
1162016-03-310.028000
1172013-12-310.026000
1182022-02-280.017000
1192023-12-290.032000
1202013-12-180.019000
1212021-04-300.021000
1222023-09-290.030000
1232017-02-280.027000
1242019-05-310.029000
1252020-12-310.022000
1262015-03-310.027000
1272016-08-310.029000
1282016-12-160.016000
1292019-01-310.028000
1302024-07-310.035000
1312019-03-290.029000
1322020-04-300.026000
1332024-03-280.032000
1342024-11-290.045000
1352013-08-300.027000
1362015-06-300.027000
1372018-04-300.028000
1382023-05-310.031000
1392014-06-300.023000
1402020-05-290.027000
1412023-03-310.030000
1422016-06-300.028000
1432017-01-310.028000
1442017-08-310.027000
1452020-10-300.023000
1462023-06-300.030000
1472013-05-310.027000
1482015-01-300.026000
1492015-09-300.025000
1502021-11-300.020000
1512015-12-310.027000
1522023-08-310.031000