f/overrides/event-backup/ddtrx-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
22023-09-290.034000
32024-09-300.037000
42026-02-270.032000
52021-03-310.031000
62022-11-300.030000
72023-03-310.032000
82024-10-310.037000
92025-03-310.038000
102026-01-300.032000
112021-05-280.030000
122021-11-300.027000
132022-03-310.030000
142024-05-310.041000
152019-12-310.034000
162023-02-280.031000
172024-01-310.035000
182023-07-310.032000
192023-11-300.034000
202024-06-280.037000
212019-08-300.033000
222020-04-300.032000
232022-02-280.026000
242023-10-310.034000
252019-11-290.033000
262020-06-300.033000
272023-05-310.029000
282020-08-310.030000
292020-09-300.029000
302021-01-290.025000
312025-07-310.037000
322025-09-300.036000
332021-04-300.028000
342024-08-300.038000
352026-07-310.033000
362020-01-310.030000
372025-05-300.039000
382026-05-290.035000
392021-10-290.026000
402024-11-290.035000
412026-04-300.037000
422019-09-300.033000
432020-10-300.029000
442021-02-260.024000
452025-06-300.038000
462025-08-290.038000
472025-12-310.040000
482020-11-300.029000
492022-04-290.025000
502022-08-310.030000
512023-06-300.032000
522024-03-280.033000
532025-02-280.035000
542020-05-290.032000
552020-07-310.032000
562021-09-300.027000
572020-12-310.030000
582023-12-290.040000
592024-07-310.038000
602023-01-310.029000
612024-02-290.035000
622024-12-310.040000
632022-01-310.026000
642022-09-300.030000
652022-10-310.031000
662021-07-300.028000
672023-08-310.034000
682025-01-310.035000
692025-10-310.034000
702025-11-280.035000
712019-10-310.034000
722020-03-310.035000
732021-06-300.028000
742026-06-300.040000
752022-05-310.027000
762022-06-300.030000
772022-07-290.030000
782022-12-300.031000
792023-04-280.029000
802020-02-280.028000
812021-08-310.026000
822021-12-300.029000
832024-04-300.035000
842025-04-300.036000
852026-03-310.039000