f/overrides/event-backup/eql-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
22021-09-230.149000
32021-12-220.198333
42022-03-240.136000
52012-03-210.051667
62013-03-200.048333
72014-03-260.066000
82017-03-220.090333
92019-09-190.120333
102022-12-220.240333
112024-12-240.223000
122025-03-260.169000
132026-03-260.184000
142026-06-250.068000
152013-06-260.069000
162025-06-250.191000
172010-06-230.042333
182015-03-250.074333
192017-12-210.138667
202022-09-220.179667
212023-12-210.207333
222016-12-210.302000
232014-06-250.076000
242017-09-210.118000
252018-06-210.119667
262018-12-200.162000
272011-03-230.045333
282023-09-210.185667
292011-12-210.072333
302018-03-220.099667
312019-06-200.138333
322020-03-190.212000
332021-03-180.124000
342013-09-250.057000
352015-06-240.093667
362012-06-200.056333
372012-09-260.064667
382017-06-210.109667
392020-12-220.181667
402024-06-200.163667
412016-09-210.090667
422018-09-200.127333
432020-06-180.125333
442021-06-170.145333
452023-03-230.174000
462012-12-260.105000
472015-12-230.119667
482022-06-230.128000
492009-09-230.046000
502015-09-230.090000
512019-12-190.159667
522023-06-220.149000
532025-12-240.238000
542009-12-220.059000
552014-12-240.108333
562020-09-170.138333
572024-03-210.160667
582014-09-240.068000
592024-09-240.195333
602025-09-250.202000
612010-09-220.063667
622011-06-220.053333
632011-09-210.051000
642016-06-220.096667
652019-03-210.102333
662010-03-240.033333
672010-12-210.063000
682013-12-260.090000