f/overrides/event-backup/ibtk-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

1.4 KiB

1DateDividends
22026-07-010.061000
32020-12-170.014000
42026-03-020.057000
52026-04-010.062000
62023-04-030.047000
72023-09-010.052000
82025-04-010.065000
92025-06-020.066000
102026-08-030.060000
112020-10-010.013000
122022-10-030.044000
132022-11-010.089000
142026-02-020.061000
152021-12-160.019000
162025-05-010.063000
172021-03-010.013000
182021-04-010.014000
192021-07-010.011000
202024-06-030.064000
212025-08-010.065000
222025-10-010.062000
232020-09-010.013000
242022-05-020.021000
252023-05-010.044000
262025-12-010.061000
272021-10-010.019000
282023-02-010.055000
292024-12-180.064000
302022-08-010.023000
312023-12-010.063000
322024-11-010.064000
332025-07-010.063000
342026-06-010.063000
352021-02-010.012000
362021-08-020.019000
372021-11-010.020000
382023-12-140.060000
392025-09-020.063000
402021-06-010.016000
412023-06-010.046000
422023-10-020.040000
432025-03-030.059000
442021-12-010.019000
452023-07-030.046000
462024-09-030.064000
472022-02-010.009000
482024-02-010.060000
492025-02-030.063000
502022-04-010.031000
512022-06-010.039000
522023-11-010.062000
532022-12-010.035000
542024-05-010.062000
552024-07-010.062000
562025-11-030.064000
572020-11-020.013000
582021-05-030.015000
592022-09-010.047000
602024-04-010.067000
612024-10-010.062000
622021-09-010.019000
632022-03-010.028000
642022-12-150.038000
652023-03-010.039000
662023-08-010.049000
672026-05-010.060000
682024-08-010.064000
692024-12-020.063000
702025-12-190.059000
712020-12-010.012000
722022-07-010.038000
732024-03-010.059000