f/overrides/event-backup/jabnx-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
22018-12-181.825000
32025-09-300.229000
42015-12-171.471000
52012-06-290.150000
62013-03-280.111000
72013-12-171.041000
82016-06-300.130000
92016-12-190.598000
102022-06-300.119000
112024-09-300.246000
122012-09-280.139000
132020-03-310.135000
142024-12-102.506000
152025-12-093.606000
162018-06-290.139000
172018-09-280.133000
182021-09-300.103000
192026-03-310.236000
202017-06-300.165000
212019-06-280.185000
222021-12-221.779000
232022-09-300.145000
242013-09-300.125000
252014-09-300.132000
262021-03-310.131000
272023-06-300.209000
282025-03-310.232000
292015-03-310.131000
302015-09-300.137000
312017-03-310.135000
322020-12-170.661000
332021-06-300.109000
342019-09-300.155000
352019-12-170.610000
362022-03-310.099000
372023-09-290.228000
382012-12-181.038000
392014-06-300.131000
402016-09-300.155000
412018-03-290.134000
422023-12-110.231000
432022-12-220.422000
442023-03-310.338000
452026-06-300.207000
462013-06-280.125000
472017-09-290.155000
482017-12-191.321000
492020-09-300.132000
502024-06-280.241000
512025-06-300.230000
522014-12-171.546000
532020-06-300.141000
542014-03-310.127000
552015-06-300.121000
562016-03-310.139000
572019-03-290.146000
582024-03-280.248000