f/overrides/event-backup/jmom-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

715 B

1DateDividends
22019-06-250.101000
32021-06-220.064000
42022-09-200.138000
52024-12-240.176000
62026-03-240.123000
72026-06-230.153000
82018-12-240.084000
92020-03-240.076000
102020-06-230.066000
112021-03-230.056000
122023-12-190.178000
132023-06-200.138000
142024-09-240.110000
152025-03-250.113000
162017-12-260.076000
172018-03-210.070000
182018-09-250.080000
192022-06-210.129000
202022-12-200.177000
212025-06-240.139000
222020-09-220.077000
232020-12-220.112000
242022-03-220.078000
252023-03-210.118000
262019-03-200.067000
272025-09-230.163000
282025-12-230.171000
292021-12-210.111000
302023-09-190.121000
312024-06-250.104000
322018-06-260.097000
332019-09-240.049000
342019-12-230.122000
352021-09-210.076000
362024-03-190.049000