f/overrides/event-backup/mstbx-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

1.8 KiB

1DateDividends
22025-12-300.061000
32018-12-310.029000
42021-01-290.003000
52021-11-300.016000
62022-09-300.021000
72023-09-290.041000
82019-09-300.025000
92020-12-180.099000
102025-06-300.036000
112023-10-310.036000
122026-04-300.029000
132019-12-300.019000
142020-10-300.019000
152022-06-300.015000
162022-10-310.025000
172022-12-290.045000
182024-12-300.048000
192025-03-310.030000
202019-08-300.033000
212020-07-310.015000
222021-09-300.011000
232022-01-310.010000
242024-03-280.034000
252020-11-300.019000
262023-05-310.025000
272024-06-280.039000
282025-08-290.029000
292025-10-310.036000
302020-01-310.030000
312020-02-280.016000
322020-06-300.019000
332022-02-280.011000
342023-02-280.025000
352024-01-310.015000
362025-05-300.027000
372019-06-280.050000
382021-03-310.011000
392022-03-310.016000
402022-08-310.019000
412022-11-300.020000
422022-07-290.026000
432024-05-310.031000
442025-09-300.029000
452026-01-300.002000
462026-06-300.034000
472021-04-300.015000
482022-05-310.011000
492023-01-310.012000
502023-07-310.033000
512024-08-300.035000
522025-07-310.035000
532026-03-310.026000
542026-07-310.039000
552019-12-200.032000
562021-08-310.016000
572023-04-280.010000
582024-11-290.034000
592025-04-300.035000
602020-03-310.017000
612021-12-300.031000
622023-03-310.028000
632023-11-300.033000
642024-04-300.037000
652021-02-260.012000
662021-06-300.020000
672021-10-290.017000
682026-02-270.036000
692023-12-280.058000
702025-02-280.031000
712025-11-280.028000
722019-10-310.020000
732020-08-310.013000
742020-12-300.040000
752023-06-300.033000
762023-08-310.032000
772025-01-310.018000
782020-04-300.014000
792021-12-170.085000
802024-02-290.033000
812024-07-310.036000
822024-10-310.032000
832019-11-270.010000
842020-05-290.009000
852020-09-300.015000
862026-05-290.023000
872019-03-290.058000
882021-05-280.013000
892021-07-300.017000
902022-04-290.028000
912024-09-300.034000