f/overrides/event-backup/idpzx-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
22023-07-200.036000
32025-01-170.026000
42023-01-200.024000
52023-11-200.037000
62024-12-200.042000
72025-08-200.040000
82021-05-200.023000
92020-02-200.033000
102023-02-170.033000
112024-04-190.042000
122025-06-200.043000
132019-12-310.009000
142023-03-200.030000
152023-05-190.036000
162025-11-200.057000
172020-06-190.032000
182019-11-200.024000
192020-12-310.007000
202021-09-200.018000
212021-12-150.130000
222022-11-180.027000
232023-08-180.040000
242023-09-200.037000
252019-09-200.035000
262024-02-200.042000
272024-03-200.037000
282024-05-200.038000
292025-10-200.037000
302023-12-200.038000
312025-05-200.038000
322023-10-200.036000
332021-01-200.012000
342024-10-180.036000
352024-12-310.012000
362025-02-200.040000
372025-07-180.036000
382020-04-200.031000
392021-12-200.017000
402022-01-200.006000
412024-01-190.026000
422024-07-190.040000
432021-07-200.018000
442020-07-200.028000
452020-11-200.026000
462021-04-200.024000
472021-08-200.019000
482022-05-200.020000
492023-12-290.013000
502024-08-200.044000
512020-01-170.022000
522025-12-310.013000
532026-04-200.037000
542025-12-170.007000
552022-02-180.019000
562022-03-180.015000
572025-03-200.037000
582026-03-200.037000
592020-12-180.020000
602021-06-180.018000
612022-06-170.015000
622025-09-190.041000
632025-12-190.039000
642026-02-200.041000
652026-05-200.038000
662020-10-200.024000
672020-09-180.022000
682021-03-190.024000
692021-10-200.015000
702021-12-310.006000
712024-06-200.041000
722026-07-200.038000
732020-03-200.034000
742019-10-180.025000
752019-12-200.026000
762020-12-160.235000
772021-02-190.023000
782022-08-190.026000
792023-06-200.036000
802024-11-200.039000
812019-08-200.027000
822026-01-200.026000
832022-12-200.030000
842020-08-200.022000
852022-04-200.015000
862022-10-200.019000
872022-12-300.012000
882023-04-200.036000
892020-05-200.032000
902022-07-200.023000
912022-09-200.019000
922024-09-200.042000
932025-04-170.041000
942021-11-190.014000