f/overrides/event-backup/aggdx-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
22024-12-171.633000
32015-03-170.176000
42016-12-200.063000
52017-03-210.113000
62019-12-172.107000
72020-03-100.066000
82020-12-221.444000
92022-12-211.224000
102014-12-160.875000
112015-12-220.828000
122017-12-191.471000
132014-03-180.092000
142018-03-200.073000
152018-12-181.162000
162013-12-170.278000
172021-12-211.853000
182023-12-190.446000
192025-12-161.070000