f/overrides/event-backup/djd-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

815 B

1DateDividends
22016-12-230.163000
32018-12-240.218000
42019-12-230.298000
52024-06-240.374000
62024-12-230.349000
72016-06-240.182000
82017-12-260.251000
92018-09-240.231000
102020-03-230.288000
112021-03-220.337000
122024-03-180.425000
132025-03-240.362000
142026-03-230.391000
152017-06-260.185000
162019-09-230.245000
172020-06-220.313000
182018-03-260.177000
192023-03-200.382000
202023-06-200.414000
212023-09-180.400000
222026-06-220.410000
232022-09-190.342000
242020-09-210.421000
252020-12-210.303000
262022-12-190.365000
272025-06-230.368000
282025-12-220.385000
292017-03-270.323000
302017-09-260.182000
312019-06-240.276000
322021-06-210.260000
332021-12-200.353000
342016-09-260.184000
352025-09-220.381000
362019-03-180.284000
372022-03-210.347000
382022-06-210.324000
392023-12-180.411000
402024-09-230.372000
412018-06-260.259000