f/overrides/event-backup/ewi-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

1.0 KiB

1DateDividends
22024-12-170.559000
32006-12-201.336000
41998-08-253.728000
52000-08-244.454000
62011-06-220.788000
72009-06-230.428000
82022-12-130.416000
92008-12-230.858000
102023-06-070.734000
112002-12-230.752000
122015-06-250.552000
131998-12-220.936000
142014-06-250.492000
152013-12-180.192000
162015-12-210.084000
172005-12-231.012000
182007-12-202.978000
192008-06-252.214000
202012-12-180.124000
212020-12-140.237000
222009-12-220.438000
232010-06-230.470000
242023-12-200.419000
252020-06-150.250000
262025-12-160.702000
272026-06-151.174000
282021-12-130.452000
291997-12-230.056000
302003-12-160.740000
312014-12-170.192000
322011-12-200.326000
332017-12-190.169000
342022-06-090.816000
352001-08-240.628000
362018-06-190.824000
372003-12-221.222000
381997-08-250.708000
391999-08-254.168000
402000-12-204.460000
412018-12-180.315000
422019-06-170.918000
432019-12-160.204000
442010-12-210.194000
452012-06-210.510000
462016-12-210.221000
472021-06-100.410000
482013-06-270.490000
492016-06-220.660000
502017-06-200.498000
511996-08-260.788000
522004-12-231.288000
532024-06-110.906000
542025-06-160.822000