f/overrides/event-backup/mxfex-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

1.7 KiB

1DateDividends
22021-01-290.023000
32024-06-280.062000
42024-08-300.065000
52024-03-280.065000
62019-04-300.041000
72019-10-310.037000
82020-01-310.035000
92020-10-300.026000
102021-08-310.025000
112021-10-290.025000
122024-04-300.061000
132024-05-310.065000
142019-09-300.038000
152020-05-290.026000
162020-07-310.026000
172021-05-280.023000
182022-06-300.030000
192023-11-300.067000
202026-01-300.048000
212019-06-280.040000
222020-06-300.025000
232023-08-310.062000
242025-01-310.055000
252026-03-310.051000
262019-11-290.034000
272021-04-300.023000
282021-12-310.025000
292023-02-280.055000
302023-03-310.061000
312023-05-310.063000
322022-02-280.022000
332022-04-290.024000
342023-01-310.057000
352024-02-290.061000
362025-06-300.053000
372026-02-270.043000
382021-07-300.024000
392022-08-310.040000
402025-04-300.053000
412025-09-300.052000
422025-07-310.053000
432020-11-300.024000
442021-03-310.020000
452022-07-290.037000
462022-10-310.046000
472024-10-310.059000
482024-11-290.055000
492020-03-310.034000
502020-09-300.025000
512023-06-300.061000
522023-07-310.061000
532020-02-280.033000
542020-12-310.025000
552023-10-310.064000
562024-12-310.056000
572025-12-310.073000
582026-07-310.047000
592019-07-310.040000
602021-06-300.022000
612021-11-300.023000
622022-09-300.041000
632025-10-310.051000
642026-05-290.047000
652019-05-310.041000
662022-11-300.051000
672025-02-280.049000
682025-03-310.054000
692019-12-310.034000
702020-04-300.028000
712020-08-310.029000
722023-09-290.062000
732023-12-290.064000
742019-08-300.039000
752022-01-310.024000
762022-03-310.023000
772022-05-310.028000
782022-12-300.055000
792023-04-280.058000
802024-07-310.062000
812024-09-300.060000
822025-08-290.055000
832026-06-300.045000
842021-02-260.019000
852021-09-300.025000
862024-01-310.064000
872025-05-300.055000
882025-11-280.049000
892026-04-300.046000