f/overrides/event-backup/argt-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

455 B

1DateDividends
22017-12-280.174000
32019-06-270.244000
42021-12-300.267000
52022-12-290.446000
62025-06-270.070000
72026-06-290.329000
82016-12-280.084000
92018-12-280.315000
102022-06-290.386000
112024-06-270.213000
122023-12-280.526000
132025-12-300.701000
142012-12-270.178000
152013-12-270.122000
162015-12-290.161000
172021-06-290.025000
182023-06-290.292000
192024-12-300.953000
202011-12-280.588000
212014-12-290.088000
222019-12-300.078000
232020-12-300.085000