f/overrides/event-backup/aryix-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

515 B

1DateDividends
22004-12-170.133000
32005-12-160.298000
42010-04-300.032000
52011-12-290.225000
62012-12-280.332000
72017-12-280.190000
82019-12-301.274000
92023-12-210.411000
102008-12-300.425000
112009-12-300.141000
122014-12-300.730000
132025-12-191.775000
142006-12-150.717000
152007-12-140.456000
162010-12-300.188000
172024-12-200.732000
182013-12-300.484000
192015-12-301.057000
202016-12-290.519000
212017-10-190.329000
222018-12-271.045000
232018-12-310.380000
242020-12-291.046000
252021-12-281.282000
262022-12-280.737000