f/overrides/event-backup/cmdyx-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

395 B

1DateDividends
22023-12-070.690000
32024-12-061.183000
42017-06-200.155000
52017-12-061.119000
62018-12-061.218000
72020-06-190.600000
82022-06-220.748000
92022-12-070.793000
102019-12-050.583000
112025-06-130.397000
122025-12-050.929000
132019-06-180.322000
142021-12-072.162000
152023-06-220.439000
162024-06-140.463000
172018-06-190.140000
182020-12-070.941000
192021-06-140.918000
202026-06-220.697000