f/overrides/event-backup/heomx-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
22020-12-290.024000
32022-12-280.103000
42024-12-110.332000
52017-12-151.069000
62017-12-270.055000
72018-12-270.111000
82016-12-280.115000
92021-12-100.856000
102021-12-290.028000
112018-12-171.412000
122020-12-100.148000
132023-12-270.056000
142024-12-270.050000
152025-12-110.942000
162025-12-290.035000
172016-12-160.211000
182019-12-100.229000
192019-12-270.051000