f/overrides/event-backup/adjex-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

335 B

1DateDividends
22020-12-181.028000
32023-12-150.420000
42024-12-130.878000
52016-12-280.012000
62018-12-180.772000
72017-12-181.995000
82022-12-160.008000
92013-12-241.538000
102015-12-280.083000
112012-12-240.162000
122014-12-291.190000
132019-12-180.940000
142021-12-202.433000
152006-12-290.482000
162007-12-270.552000
172010-12-270.624000