f/overrides/event-backup/mstpx-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

1.9 KiB

1DateDividends
22019-11-270.009000
32019-12-200.028000
42021-08-310.014000
52024-03-280.024000
62025-03-310.026000
72026-01-300.021000
82019-06-280.024000
92020-06-300.021000
102021-09-300.015000
112021-10-290.014000
122022-07-290.018000
132023-05-310.018000
142019-03-290.021000
152020-01-310.001000
162020-02-280.015000
172022-02-280.013000
182025-08-290.026000
192025-09-300.027000
202021-04-300.016000
212022-05-310.013000
222023-02-280.019000
232023-10-310.024000
242025-01-310.026000
252025-06-300.033000
262026-06-300.036000
272020-09-300.018000
282021-07-300.015000
292022-10-310.019000
302024-06-280.031000
312025-10-310.029000
322026-05-290.020000
332025-02-280.025000
342019-07-310.023000
352020-05-290.015000
362022-09-300.019000
372023-03-310.024000
382023-06-300.029000
392024-07-310.027000
402019-05-310.021000
412021-01-290.014000
422021-02-260.017000
432026-04-300.029000
442025-11-280.024000
452018-12-310.026000
462019-01-310.010000
472020-12-300.023000
482022-01-310.012000
492022-11-300.018000
502024-01-310.027000
512019-09-300.021000
522020-08-310.017000
532021-05-280.012000
542021-06-300.017000
552021-12-170.007000
562025-07-310.029000
572021-11-300.014000
582022-08-310.018000
592023-07-310.021000
602023-08-310.023000
612026-03-310.027000
622026-07-310.031000
632019-04-300.022000
642020-11-300.016000
652023-04-280.020000
662023-09-290.025000
672024-02-290.024000
682026-02-270.026000
692019-12-300.037000
702022-03-310.016000
712022-04-290.016000
722023-01-310.016000
732023-11-300.023000
742024-05-310.022000
752019-10-310.023000
762020-04-300.014000
772020-07-310.019000
782024-08-300.028000
792024-09-300.027000
802024-12-300.029000
812025-04-300.028000
822020-10-300.020000
832021-03-310.016000
842021-12-300.018000
852022-06-300.021000
862022-12-290.027000
872024-11-290.027000
882024-10-310.027000
892025-12-300.037000
902019-02-280.020000
912019-08-300.023000
922020-03-310.018000
932023-12-280.025000
942024-04-300.028000
952025-05-300.021000