f/overrides/event-backup/atgdx-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
22020-12-220.735000
32021-12-211.828000
42024-03-190.106000
52019-12-170.092000
62020-03-100.005000
72022-04-190.325000
82014-12-160.888000
92015-03-170.024000
102016-12-200.089000
112017-12-190.754000
122019-03-190.160000
132013-12-170.471000
142014-03-180.063000
152025-12-160.505000
162015-12-220.715000
172018-03-200.079000
182018-12-181.230000
192024-12-170.098000