f/overrides/event-backup/ita-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

1.6 KiB

1DateDividends
22010-09-230.085500
32011-12-220.105000
42012-03-260.086000
52013-09-240.220500
62015-12-240.112500
72016-03-230.158500
82017-12-190.160500
92006-06-220.018500
102011-03-250.067500
112023-03-230.280000
122007-03-230.023000
132007-06-280.026500
142007-09-250.028500
152008-03-250.041000
162008-09-240.057500
172012-09-250.115500
182009-09-220.060000
192013-03-250.118500
202016-06-210.157000
212017-09-260.354000
222021-03-250.315000
232022-03-240.160000
242022-09-260.382000
252006-12-200.035000
262013-12-230.150000
272021-12-130.158000
282024-06-110.299000
292017-03-240.157000
302018-12-170.114500
312021-06-100.189000
322019-12-300.287500
332009-03-250.056000
342012-06-190.117000
352014-03-250.105000
362014-09-240.126000
372014-12-240.126500
382015-09-250.127000
392018-06-260.217000
402020-03-250.393500
412020-06-150.209000
422022-06-090.278000
432025-06-160.172000
442009-06-240.073000
452019-03-200.292000
462023-06-070.237000
472007-12-270.051000
482010-12-220.079000
492012-12-190.375500
502014-06-240.333500
512016-09-260.179000
522025-03-180.253000
532006-09-260.028500
542019-06-170.307000
552019-09-240.292500
562021-09-240.181000
572023-12-200.433000
582024-03-210.266000
592010-06-240.063500
602018-03-220.209000
612022-12-130.240000
622023-09-260.225000
632008-06-250.040500
642015-03-250.253500
652019-12-160.528500
662020-12-140.203000
672025-09-160.750000
682009-12-230.146500
692011-06-240.084000
702011-09-230.079500
712013-06-260.110000
722018-09-260.434500
732020-09-230.204000
742026-06-150.164000
752008-12-230.092000
762026-03-170.151000
772016-12-210.260000
782017-06-270.188500
792024-09-250.227000
802010-03-250.036500
812015-06-240.120500
822024-12-170.437000