f/overrides/event-backup/eusa-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
22012-09-240.158000
32020-09-230.262000
42024-03-210.306000
52025-12-160.559000
62012-03-230.130000
72020-12-140.223000
82022-06-090.265000
92024-09-250.413000
102011-06-230.064000
112015-12-240.262000
122023-09-260.329000
132014-06-250.308000
142019-03-200.192000
152022-03-240.303000
162026-06-150.306000
172013-06-270.176000
182011-09-260.069000
192012-12-190.208000
202013-09-240.169000
212017-06-270.209000
222017-09-260.218000
232020-03-250.322000
242020-06-150.239000
252012-06-220.141000
262015-06-240.203000
272016-12-220.244000
282018-09-260.286000
292019-12-160.319000
302010-12-230.204000
312018-12-280.042000
322022-12-130.283000
332010-06-230.066000
342017-03-240.159000
352017-12-210.247000
362010-09-240.129000
372015-09-250.206000
382015-12-290.056000
392016-03-230.152000
402016-09-260.172000
412021-03-250.220000
422023-06-070.277000
432025-06-160.357000
442013-03-250.155000
452018-06-260.232000
462018-12-170.247000
472021-06-100.229000
482021-09-240.331000
492022-09-260.410000
502023-03-230.305000
512025-09-160.442000
522026-03-170.354000
532014-09-240.207000
542015-03-250.207000
552016-06-210.186000
562018-03-220.193000
572023-12-200.383000
582019-06-170.244000
592013-12-230.280000
602014-03-250.146000
612019-09-240.201000
622011-12-220.052000
632014-12-240.186000
642021-12-130.319000
652024-06-110.293000
662025-03-180.324000
672011-03-240.114000
682024-12-170.394000