f/overrides/event-backup/adgax-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
22008-12-220.040000
32015-12-171.283000
42021-12-093.709000
52004-12-210.245000
62017-12-142.221000
72014-12-182.845000
82017-06-120.017000
92019-12-121.138000
102020-12-100.927000
112022-12-081.921000
122023-12-070.968000
132024-12-122.366000
142005-12-160.922000
152025-12-113.656000
162007-12-213.213000
172016-12-150.867000
182018-12-132.974000
192006-12-141.638000