f/overrides/event-backup/grf-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
22006-12-180.687000
32007-12-120.877000
42008-12-100.351000
52023-11-220.350000
62025-11-210.850000
72006-06-220.500000
82011-12-141.050000
92012-12-130.360000
102017-11-220.510000
112021-11-180.970000
122022-11-170.370000
132004-12-160.170435
142005-12-190.165000
152009-12-090.050000
162010-12-150.280000
172018-11-210.530000
182020-12-030.550000
192013-12-111.020000
202014-12-100.370000
212015-11-190.500000
222016-11-210.112000
232019-11-210.074000
242024-11-290.680000