f/overrides/event-backup/dfusx-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

2.1 KiB

1DateDividends
22013-12-110.091000
32020-06-290.109000
42022-12-121.313000
52025-06-270.111000
62000-06-080.031000
72002-06-100.026000
82017-03-300.084000
92001-06-080.028000
102009-12-090.056000
112003-03-100.020000
122004-12-200.081000
132009-09-090.041000
142000-12-180.037000
152008-06-100.050000
162009-03-100.035000
172009-06-090.040000
182003-06-100.029000
192005-06-080.037000
202011-03-080.032000
212016-03-300.105000
222017-09-280.091000
232026-03-300.120000
242001-12-170.034000
252012-06-080.057000
262014-12-150.096000
272020-12-140.756000
282015-06-080.073000
291999-12-200.025000
302004-06-080.033000
312025-12-100.127000
322024-06-270.117000
332005-03-080.020000
342011-09-080.049000
352020-09-290.098000
362008-09-090.054000
372014-09-090.075000
382016-12-140.223000
392007-12-190.076000
402014-06-090.073000
412018-09-270.111000
422019-06-270.107000
432014-03-100.050000
442004-03-090.020000
452010-12-090.063000
462011-12-130.075000
472019-03-280.093000
482021-12-131.923000
492022-06-290.107000
502024-12-100.154000
512012-03-080.030000
522026-06-290.121000
532016-09-290.049000
542020-03-300.113000
552021-06-290.102000
562021-09-290.098000
572023-09-280.107000
582025-03-280.112000
592006-03-080.026000
602012-09-100.057000
612012-12-120.095000
622023-03-300.104000
632023-06-290.110000
642005-12-190.063000
652022-09-290.112000
662002-12-160.042000
672011-06-080.048000
682025-09-290.123000
692004-09-080.035000
702006-12-180.068000
712007-06-080.056000
722015-03-090.065000
732015-12-150.237000
742002-09-100.026000
752007-09-100.051000
762008-12-100.077000
772010-09-080.047000
782019-12-160.275000
792000-09-080.029000
802007-03-080.036000
812010-06-080.021000
822013-09-100.067000
832018-06-280.100000
842003-09-090.031000
852017-12-140.173000
862005-09-080.047000
872006-06-080.049000
882013-03-080.039000
892018-12-170.241000
902023-12-110.998000
912001-09-100.027000
922002-03-080.020000
932018-03-280.058000
942015-09-090.084000
952017-06-290.093000
962003-12-220.047000
972019-09-270.082000
982022-03-300.099000
992026-08-040.049000
1002013-06-100.063000
1012001-03-080.017000
1022006-09-080.047000
1032008-03-100.039000
1042024-09-270.114000
1052000-03-080.018000
1062016-06-290.085000
1072021-03-300.102000
1082024-03-270.100000