f/overrides/event-backup/mfiwx-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

2.0 KiB

1DateDividends
22020-12-310.016000
32022-02-280.013000
42022-11-300.019000
52025-10-310.025000
62025-12-310.025000
72022-03-310.013000
82022-09-300.018000
92024-06-280.027000
102024-09-300.027000
112024-10-310.027000
122023-07-310.026000
132023-12-290.025000
142026-02-270.025000
152019-06-280.020000
162020-09-300.018000
172021-07-300.016000
182021-12-310.013000
192023-01-310.024000
202026-07-310.025000
212024-12-310.027000
222018-09-280.019000
232020-03-310.017000
242021-10-290.014000
252022-04-290.014000
262024-08-300.027000
272021-12-160.069000
282024-01-310.026000
292024-07-310.027000
302025-02-280.026000
312023-02-280.024000
322025-07-310.025000
332019-01-310.018000
342019-03-290.018000
352019-10-310.019000
362020-08-310.018000
372021-06-300.016000
382021-04-300.016000
392023-10-310.026000
402018-05-310.018000
412020-01-310.018000
422020-05-290.017000
432020-07-310.018000
442020-10-300.018000
452018-11-300.018000
462023-09-290.026000
472024-05-310.026000
482026-05-290.026000
492026-06-300.026000
502018-03-290.016000
512018-12-310.018000
522021-02-260.016000
532025-05-300.026000
542025-09-300.025000
552023-03-310.024000
562023-05-310.026000
572023-06-300.026000
582018-04-300.017000
592020-04-300.017000
602020-11-300.017000
612021-05-280.016000
622022-12-300.021000
632024-02-290.026000
642026-01-300.025000
652020-02-280.017000
662022-06-300.015000
672023-04-280.026000
682018-06-290.019000
692019-04-300.019000
702019-05-310.020000
712019-07-310.020000
722019-08-300.019000
732024-11-290.027000
742026-04-300.026000
752018-07-310.019000
762018-10-310.018000
772019-11-290.019000
782021-09-300.014000
792023-11-300.025000
802024-04-300.026000
812025-08-290.025000
822018-08-310.019000
832019-02-280.018000
842021-11-300.014000
852022-10-310.018000
862023-08-310.027000
872025-11-280.025000
882026-03-310.025000
892019-09-300.019000
902019-12-310.018000
912020-06-300.018000
922020-12-170.013000
932025-03-310.026000
942021-03-310.016000
952022-01-310.013000
962024-03-280.026000
972025-01-310.027000
982025-04-300.026000
992021-01-290.017000
1002021-08-310.015000
1012022-05-310.015000
1022022-07-290.015000
1032022-08-310.016000
1042025-06-300.025000