f/overrides/event-backup/magwx-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

475 B

1DateDividends
22003-12-300.080000
32004-12-300.198000
42006-12-270.511000
52008-12-260.459000
62010-12-280.248000
72017-12-270.991000
82023-12-270.842000
92005-12-290.414000
102007-12-281.030000
112009-12-280.288000
122011-12-270.307000
132013-12-270.243000
142016-12-280.520000
152024-12-261.457000
162014-12-290.293000
172015-12-290.841000
182018-12-271.207000
192019-12-261.049000
202020-12-290.870000
212021-12-281.854000
222025-12-232.043000
232012-12-270.256000
242022-12-280.964000