f/overrides/event-backup/fill-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

615 B

1DateDividends
22012-06-210.315285
32013-06-270.343767
42025-06-160.425689
52012-12-180.284275
62015-06-250.280767
72015-12-210.277280
82016-06-220.266715
92024-12-170.585078
102013-12-180.298260
112023-12-200.601664
122022-06-090.389173
132023-06-070.400956
142026-06-150.078826
152021-12-130.461889
162022-12-130.780375
172024-06-110.409691
182014-12-170.178253
192017-12-190.370414
202018-06-190.269951
212020-12-140.281794
222021-06-100.240275
232014-06-250.346454
242018-12-180.315817
252026-03-170.075200
262025-12-161.354307
272016-12-210.291427
282017-06-200.299018
292019-06-170.313584
302019-12-160.767981
312020-06-150.235668