f/overrides/event-backup/nrsax-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

2.2 KiB

1DateDividends
22023-08-300.119000
32025-04-290.118000
42019-10-300.117000
52026-02-260.119000
62017-12-270.225000
72018-12-280.115000
82023-02-270.119000
92020-01-300.117000
102021-05-270.119000
112017-06-290.106000
122017-12-280.110000
132021-10-280.119000
142026-05-280.119000
152021-03-300.119000
162022-12-290.119000
172023-09-280.119000
182025-07-300.118000
192018-07-300.106000
202020-08-280.118000
212021-01-280.119000
222021-02-250.119000
232021-04-290.119000
242023-05-300.119000
252017-10-300.106000
262019-05-300.117000
272020-04-290.118000
282025-11-260.119000
292018-04-270.106000
302018-05-300.106000
312025-05-290.119000
322022-03-300.118000
332018-03-280.106000
342019-04-290.117000
352020-06-290.118000
362020-03-300.118000
372025-01-300.118000
382024-07-300.118000
392024-10-300.118000
402018-09-270.106000
412019-03-280.117000
422023-06-290.119000
432025-02-270.119000
442022-11-290.119000
452023-07-280.119000
462024-12-300.118000
472019-07-300.117000
482019-12-300.117000
492021-09-290.119000
502019-08-290.117000
512021-07-290.119000
522024-06-270.119000
532026-06-290.119000
542017-09-280.106000
552018-11-290.107000
562019-11-270.117000
572025-06-270.119000
582020-10-290.118000
592016-11-290.096000
602017-04-270.106000
612023-03-300.119000
622025-03-280.119000
632022-05-270.119000
642023-12-280.119000
652024-09-270.118000
662018-10-300.106000
672026-07-300.119000
682019-01-300.118000
692019-09-270.117000
702024-05-300.119000
712023-10-300.119000
722024-01-300.119000
732017-05-300.105000
742017-11-290.110000
752018-08-300.106000
762017-08-300.105000
772019-06-270.117000
782025-12-300.118000
792020-02-270.117000
802020-11-270.119000
812022-02-250.119000
822023-04-270.119000
832024-03-270.119000
842018-06-280.106000
852020-09-290.118000
862021-08-300.119000
872017-12-040.206000
882019-02-270.117000
892024-04-290.119000
902023-01-300.119000
912024-11-270.119000
922026-03-300.118000
932017-01-300.106000
942017-07-280.106000
952022-01-280.119000
962024-08-290.119000
972025-09-290.118000
982018-02-270.106000
992021-11-290.119000
1002023-11-290.119000
1012020-12-300.119000
1022022-04-280.118000
1032022-10-280.119000
1042020-05-270.118000
1052020-07-300.118000
1062026-04-290.119000
1072018-01-300.106000
1082021-12-300.119000
1092025-08-280.119000
1102026-01-290.119000
1112016-12-290.106000
1122024-02-280.119000
1132025-10-300.119000