f/overrides/event-backup/ddcfx-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

1.6 KiB

1DateDividends
22020-09-300.029000
32021-07-300.027000
42025-11-280.034000
52020-02-280.027000
62020-03-310.033000
72020-08-310.028000
82023-04-280.033000
92024-04-300.038000
102024-06-280.042000
112025-12-310.045000
122026-03-310.042000
132019-09-300.032000
142021-11-300.025000
152022-02-280.024000
162022-08-310.034000
172023-08-310.037000
182024-11-290.038000
192026-04-300.034000
202026-05-290.035000
212026-07-310.039000
222022-06-300.031000
232023-07-310.036000
242025-03-310.039000
252025-07-310.039000
262020-12-070.018000
272021-09-300.025000
282021-10-290.025000
292022-01-310.025000
302023-01-310.035000
312020-10-300.028000
322022-04-290.027000
332023-06-300.036000
342025-08-290.038000
352019-12-310.036000
362020-12-310.031000
372022-12-300.037000
382025-01-310.038000
392025-10-310.035000
402020-07-310.029000
412021-12-300.026000
422023-12-290.038000
432024-01-310.038000
442025-09-300.040000
452023-05-310.037000
462024-09-300.040000
472025-04-300.036000
482025-06-300.041000
492026-01-300.032000
502024-05-310.043000
512025-05-300.039000
522019-08-300.031000
532019-11-290.029000
542020-05-290.027000
552020-11-300.027000
562022-09-300.033000
572022-11-300.036000
582023-09-290.038000
592024-12-310.042000
602023-03-310.037000
612022-05-310.026000
622022-07-290.032000
632023-02-280.035000
642025-02-280.037000
652020-01-310.029000
662020-06-300.029000
672021-08-310.025000
682024-08-300.041000
692026-06-300.035000
702026-02-270.031000
712020-04-300.029000
722021-01-290.024000
732021-06-300.027000
742023-10-310.038000
752024-07-310.041000
762024-10-310.041000
772024-02-290.040000
782024-03-280.037000
792019-10-310.031000
802021-02-260.023000
812021-12-070.030000
822022-03-310.030000
832022-10-310.034000
842023-11-300.037000