f/overrides/event-backup/ewk-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
22001-12-240.070000
32015-06-250.289000
41998-12-220.730000
52006-12-200.441000
62009-12-220.044000
72010-12-210.092000
82014-06-250.226000
92005-12-230.813000
102019-12-160.206000
112009-06-230.187000
122004-12-230.285000
132007-12-200.719000
141999-08-252.113000
152003-12-160.110000
162008-06-251.042000
172023-12-200.060000
181996-08-260.691000
192024-12-170.227000
202021-06-100.252000
212013-12-180.384000
221997-08-250.726000
232008-12-230.150000
242012-12-180.021000
252015-12-210.083000
262018-06-190.357000
272023-06-070.333000
282025-12-160.161000
291997-12-230.175000
302014-12-170.073000
312020-06-150.150000
322024-06-110.368000
332025-06-160.261000
342026-06-150.332000
352012-06-210.354000
362001-08-240.232000
372002-12-230.114000
382003-12-221.006000
392016-06-220.147000
401996-12-230.012000
412011-06-220.243000
422017-12-190.264000
432021-12-130.524000
442011-12-200.324000
452018-12-180.096000
462019-06-170.348000
472020-12-140.175000
482022-06-090.463000
492000-08-240.359000
502000-12-200.036000
512017-06-200.347000
521998-08-253.570000
532010-06-230.152000
542013-06-270.373000
552016-12-210.159000