f/overrides/event-backup/jval-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
22019-06-250.199000
32020-09-220.152000
42022-09-200.217000
52024-06-250.249000
62020-12-220.225000
72021-03-230.038000
82021-12-210.295000
92018-12-240.135000
102021-06-220.115000
112025-03-250.184000
122018-03-210.130000
132018-09-250.165000
142019-12-230.247000
152022-03-220.116000
162023-09-190.191000
172025-12-230.320000
182017-12-260.116000
192020-06-230.166000
202022-12-200.305000
212023-12-190.329000
222024-03-190.144000
232024-12-240.298000
242025-09-230.234000
252018-06-260.176000
262019-09-240.165000
272020-03-240.218000
282024-09-240.266000
292025-06-240.284000
302026-06-230.227000
312019-03-200.136000
322021-09-210.275000
332022-06-210.176000
342023-03-210.131000
352023-06-200.287000
362026-03-240.170000