f/overrides/event-backup/ewn-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

1.1 KiB

1DateDividends
21997-12-230.134000
32009-12-220.115000
42012-06-210.393000
52024-12-170.397000
62025-12-162.161000
72000-12-200.230000
82004-12-230.261000
92009-06-230.309000
102013-12-180.083000
112025-06-160.709000
122007-12-201.030000
132012-12-180.036000
142021-06-100.329000
152001-08-240.284000
162003-12-220.370000
172006-12-200.455000
182013-06-270.305000
192016-12-210.309000
202015-06-250.314000
211998-12-220.406000
222001-12-240.040000
232008-12-230.349000
242018-06-190.501000
251997-08-250.828000
262023-06-070.468000
271996-08-260.332000
282011-06-220.415000
292022-12-130.247000
302026-06-150.677000
312017-06-200.353000
322010-06-230.267000
332017-12-190.180000
342018-12-180.129000
352019-12-160.139000
362023-12-200.331000
372002-12-230.247000
382010-12-210.055000
392016-06-220.346000
402021-12-130.181000
412000-08-240.226000
422011-12-200.135000
432015-12-210.144000
442022-06-090.492000
451996-12-230.014000
461998-08-251.565000
472008-06-250.756000
482020-12-140.130000
491999-08-251.774000
502005-12-230.483000
512014-06-250.469000
522019-06-170.733000
532020-06-150.191000
542024-06-110.575000
552003-12-160.250000
562014-12-170.081000