f/overrides/event-backup/ihi-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

1.3 KiB

1DateDividends
22010-12-220.005667
32015-03-250.014167
42020-12-140.067500
52025-03-180.033000
62014-09-240.027000
72018-12-170.048833
82021-03-250.003667
92024-12-170.107000
102009-12-230.006167
112013-09-240.012500
122019-09-240.031500
132020-03-250.003500
142022-06-090.048000
152023-09-260.116000
162026-03-170.043000
172026-06-150.075000
182014-03-250.016167
192014-12-240.042167
202015-09-250.037333
212017-09-260.031667
222018-03-220.003167
232018-06-260.018500
242018-09-260.017500
252021-12-130.074000
262025-06-160.055000
272012-09-250.012333
282013-06-260.009167
292016-06-210.025667
302021-06-100.050833
312006-06-220.000167
322011-03-250.001333
332011-06-240.003833
342017-06-270.009000
352023-12-200.097000
362008-12-230.006667
372012-12-190.039167
382016-09-260.025833
392017-03-240.021000
402012-03-260.006000
412015-12-240.179000
422019-12-300.006167
432020-06-150.031667
442011-09-230.007333
452011-12-220.013167
462012-06-190.014667
472015-06-240.030833
482022-03-240.005000
492022-12-130.073000
502017-12-190.045167
512022-09-260.110000
522023-06-070.053000
532024-09-250.080000
542021-12-300.006000
552021-09-240.029000
562010-03-250.008000
572016-03-230.007667
582016-12-210.062500
592019-12-160.066500
602020-09-230.033000
612014-12-290.003833
622013-12-230.028833
632014-06-240.032833
642019-06-170.042167
652023-03-230.021000
662024-03-210.031000
672024-06-110.053000
682025-09-160.061000
692025-12-160.063000