f/overrides/event-backup/auizx-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
22021-06-080.185000
32021-12-074.731000
42022-09-060.128000
52023-12-050.465000
62024-03-050.149000
72025-09-090.160000
82017-12-141.323000
92020-12-100.413000
102016-12-150.284000
112017-06-060.205000
122017-09-060.187000
132023-09-050.117000
142014-09-090.135000
152016-06-070.154000
162018-09-050.175000
172019-03-050.119000
182020-06-020.177000
192025-03-110.179000
202015-12-170.866000
212018-03-060.142000
222015-03-100.192000
232024-06-110.143000
242013-12-202.480000
252014-03-110.168000
262019-09-040.149000
272019-12-121.133000
282022-06-070.148000
292022-12-061.703000
302025-06-100.132000
312015-09-090.148000
322016-09-070.191000
332017-03-070.150000
342020-09-080.105000
352022-03-080.072000
362023-06-060.148000
372024-09-100.139000
382026-03-100.140000
392014-06-100.543000
402016-03-080.212000
412026-06-090.127000
422025-12-122.552000
432019-06-040.259000
442023-03-070.164000
452018-06-050.249000
462018-12-132.759000
472020-03-030.147000
482021-03-020.090000
492021-09-070.110000
502024-12-133.129000
512014-12-182.062000
522015-06-090.211000