f/overrides/event-backup/agng-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

375 B

1DateDividends
22017-12-280.201000
32021-12-300.174000
42022-12-290.022000
52024-12-300.146000
62025-12-300.172000
72016-12-280.161000
82019-12-300.144000
92020-06-290.045000
102020-12-300.055000
112023-12-280.121000
122025-06-270.142000
132024-06-270.104000
142018-12-280.190000
152019-06-270.053000
162021-06-290.034000
172022-06-290.107000
182023-06-290.152000
192026-06-290.156000