f/overrides/event-backup/avudx-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

1.1 KiB

1DateDividends
22013-12-230.052000
32016-12-130.149000
42017-06-200.038000
52021-03-230.041000
62026-06-090.043000
72014-06-100.051000
82018-03-200.026000
92019-12-200.034000
102022-03-220.034000
112013-09-100.035000
122014-12-230.053000
132017-12-260.047000
142020-12-220.181000
152017-09-190.050000
162019-10-220.598000
172020-03-100.042000
182023-09-190.046000
192016-12-270.049000
202025-03-250.034000
212019-06-180.043000
222023-12-190.461000
232015-03-100.015000
242016-09-200.034000
252017-12-120.512000
262021-06-220.051000
272023-06-200.061000
282017-03-210.030000
292019-03-190.047000
302024-09-170.051000
312015-12-280.051000
322018-12-110.710000
332020-09-220.044000
342024-06-180.058000
352024-12-170.735000
362025-06-240.048000
372025-09-230.045000
382016-03-150.042000
392022-06-210.057000
402014-12-090.532000
412016-06-210.039000
422023-03-210.035000
432015-09-080.042000
442018-06-190.035000
452022-12-211.066000
462025-12-160.717000
472018-12-200.045000
482019-09-170.043000
492020-06-160.044000
502021-09-210.049000
512022-09-200.042000
522026-03-100.026000
532015-06-090.047000
542018-09-180.040000
552021-12-211.134000
562014-09-090.043000
572014-03-110.016000
582015-12-080.524000
592024-03-190.043000