f/overrides/event-backup/aphex-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
22006-12-200.030000
32011-12-150.134000
42012-12-190.199000
52018-11-200.079000
62020-11-240.245000
72014-11-190.176000
82016-11-170.090000
92017-11-210.078000
102021-11-230.172000
112025-12-100.396000
122008-12-170.115000
132019-11-210.173000
142007-12-190.009000
152009-12-170.110000
162010-12-160.141000
172013-11-210.117000
182022-11-220.146000
192023-12-070.081000
202024-12-100.213000