f/overrides/event-backup/aamtx-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

335 B

1DateDividends
22014-12-300.507000
32018-12-280.755000
42015-12-300.610000
52017-12-280.409000
62021-12-271.093000
72022-12-231.367000
82025-12-241.694000
92012-12-280.288000
102016-12-290.501000
112019-12-300.795000
122020-12-280.699000
132023-12-220.520000
142024-12-260.840000
152010-12-290.219000
162011-12-290.325000
172013-12-300.305000