f/overrides/event-backup/dagvx-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

575 B

1DateDividends
22015-12-085.311000
32021-12-089.587000
42006-12-052.103000
52024-12-043.685000
61995-12-120.035000
72000-12-044.368000
82013-12-182.306000
91997-12-031.720000
101999-11-302.594000
112011-12-140.195000
122010-12-090.191000
132014-12-104.520000
142016-12-051.052000
152019-12-101.241000
162020-12-081.002000
172005-12-052.357000
182007-12-042.199000
191996-12-111.915000
202025-12-043.264000
212018-12-065.475000
222022-12-063.540000
232023-12-062.091000
241998-12-021.090000
252008-12-020.261000
262009-12-040.139000
272001-11-280.696000
282012-12-200.375000
292017-12-054.292000