f/overrides/event-backup/mssix-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

395 B

1DateDividends
22013-12-270.198000
32025-12-180.410000
42014-12-290.150000
52017-12-200.082000
62019-12-230.269000
72020-12-220.056000
82022-12-210.132000
92025-12-120.784000
102023-12-210.266000
112012-12-270.075000
122015-12-290.255000
132016-12-280.156000
142017-12-260.173000
152018-12-260.129000
162021-12-161.157000
172021-12-220.283000
182018-12-190.261000
192019-04-040.361000
202024-12-180.327000