f/overrides/event-backup/dfisx-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

1.8 KiB

1DateDividends
22004-06-080.115000
32022-03-300.020000
42024-09-270.204000
52012-12-130.230000
62023-09-280.129000
72016-03-300.076000
82017-09-280.074000
92021-03-300.021000
102024-03-270.020000
111999-12-200.191000
122005-12-190.905000
132006-12-180.825000
142007-03-080.012000
152025-09-290.176000
162020-06-290.039000
172023-06-290.216000
182024-06-270.190000
192010-03-090.009000
202013-03-080.002000
212016-09-290.034000
222017-12-150.980000
232001-12-170.151000
242016-06-290.193000
252022-09-290.128000
262017-06-290.120000
272025-06-270.284000
282018-12-181.097000
292020-09-290.041000
302021-12-151.235000
312008-12-100.078000
322012-06-080.194000
332013-09-100.008000
342015-06-080.085000
352008-03-100.032000
362010-09-080.030000
372015-09-090.077000
382023-12-130.217000
392016-12-150.608000
402019-06-270.091000
412019-09-270.076000
422019-12-170.691000
432005-09-080.048000
442012-03-080.011000
452013-06-100.226000
462013-12-120.775000
472022-12-140.378000
482021-06-290.046000
492004-09-080.047000
502010-06-080.136000
512010-12-090.214000
522018-06-280.055000
532021-09-290.043000
542026-06-290.282000
551998-12-210.149000
562000-12-180.304000
572008-06-100.237000
582014-06-090.113000
592011-03-080.012000
602012-09-100.039000
612018-09-270.082000
622025-03-280.027000
632005-06-080.143000
642007-09-100.087000
652009-06-090.135000
662009-09-090.041000
672014-12-160.832000
682006-06-080.165000
692009-12-090.087000
702011-12-130.454000
712014-09-090.073000
722007-06-080.202000
732008-09-090.083000
742011-06-080.189000
752020-12-160.266000
761996-12-270.017000
772002-12-160.136000
782003-12-220.177000
792006-09-080.071000
802022-06-290.085000
812024-12-130.245000
822026-03-300.016000
831997-12-220.107000
842009-03-100.016000
852023-03-300.021000
862025-12-150.329000
872004-12-200.432000
882007-12-191.266000
892011-09-080.082000
902015-12-160.607000