f/overrides/event-backup/jcvwx-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

376 B

1DateDividends
22013-12-160.284000
32017-12-150.433000
42023-12-192.312000
52012-12-170.254000
62014-12-160.323000
72018-12-140.784000
82021-12-170.366000
92024-12-2012.505000
102025-12-197.100000
112011-12-150.229000
122015-12-160.443000
132016-12-160.614000
142019-02-280.049000
152019-03-290.049000
162019-12-131.600000
172019-04-300.049000
182020-12-180.492000
192022-12-196.124000