f/overrides/event-backup/dxj-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

1.0 KiB

1DateDividends
22009-03-230.211000
32010-12-220.264000
42015-12-212.620000
52023-03-270.625000
62024-03-220.305000
72006-12-210.209000
82013-12-240.992000
92018-12-240.262000
102019-12-230.664000
112020-06-230.586000
122021-09-240.065000
132025-09-250.140000
142015-09-210.036000
152017-06-260.830000
162019-03-260.020000
172019-06-240.578000
182022-09-260.130000
192023-09-250.012000
202024-06-250.518000
212014-06-230.546000
222014-12-195.172000
232015-06-220.324000
242016-12-230.496000
252019-09-240.065000
262021-12-271.110000
272022-06-240.750000
282007-12-170.479000
292023-06-260.782000
302024-12-262.883000
312011-12-210.270000
322013-06-240.247000
332016-09-260.050000
342021-06-240.473000
352018-06-251.092000
362009-06-220.338000
372009-12-210.183000
382010-06-280.185000
392012-06-250.316000
402012-09-240.004000
412016-06-200.435000
422017-09-260.045000
432022-12-231.065000
442024-09-250.135000
452025-12-260.385000
462026-06-251.155000
472008-12-220.800000
482011-06-220.476000
492012-12-240.233000
502017-12-260.492000
512020-12-210.792000
522023-12-221.610000
532025-06-251.340000