f/overrides/event-backup/dbjp-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

575 B

1DateDividends
22012-12-190.262000
32016-12-210.032000
42020-12-180.010000
52022-06-240.366000
62015-06-241.368000
72018-12-190.402000
82020-06-261.147000
92023-12-150.155000
102026-06-181.396000
112018-06-201.001000
122024-06-212.116000
132022-12-160.019000
142014-12-193.428000
152014-06-270.471000
162016-06-210.387000
172017-06-210.887000
182017-12-190.027000
192021-12-170.010000
202011-12-200.171000
212012-06-210.146000
222013-06-270.622000
232015-12-160.897000
242021-06-251.151000
252023-06-233.079000
262025-12-190.022000
272013-12-200.090000
282019-06-281.090000
292025-06-202.642000