f/overrides/event-backup/dax-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
22016-12-210.320000
32017-06-210.547000
42020-06-290.293000
52022-06-290.606000
62018-12-280.438000
72019-06-270.691000
82021-12-300.333000
92022-12-290.111000
102023-06-290.651000
112024-12-300.091000
122020-12-300.400000
132025-06-270.587000
142015-06-240.273000
152015-12-230.079000
162016-06-220.128000
172018-06-200.349000
182019-12-300.003000
192021-06-290.523000
202023-12-280.113000
212024-06-270.657000
222025-12-300.085000
232026-06-290.857000