f/overrides/event-backup/jqua-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

735 B

1DateDividends
22021-09-210.134000
32025-06-240.177000
42018-03-210.096000
52020-06-230.103000
62022-12-200.200000
72024-09-240.174000
82025-03-250.159000
92026-06-230.188000
102020-09-220.117000
112023-03-210.099000
122026-03-240.176000
132017-12-260.103000
142024-12-240.240000
152025-09-230.167000
162019-09-240.121000
172020-12-220.206000
182021-03-230.137000
192021-12-210.212000
202022-06-210.162000
212022-09-200.145000
222023-12-280.010000
232024-03-190.116000
242024-06-250.181000
252018-12-240.147000
262019-03-200.092000
272019-06-250.149000
282021-06-220.117000
292022-03-220.111000
302023-06-200.139000
312023-12-190.193000
322025-12-230.250000
332019-12-230.160000
342018-06-260.149000
352018-09-250.129000
362020-03-240.092000
372023-09-190.141000