f/overrides/event-backup/ddvax-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
22025-09-220.042000
32009-12-220.189000
42013-03-220.053000
52015-09-220.073000
62020-03-200.108000
72023-03-220.067000
82024-06-210.051000
92025-06-200.039000
102018-06-220.072000
112025-03-210.048000
122026-06-220.004000
132026-03-200.031000
142011-12-220.194000
152013-06-210.053000
162015-06-220.071000
172016-09-220.072000
182018-03-220.086000
192020-06-220.081000
202020-09-220.093000
212006-12-210.415000
222008-12-220.254000
232012-12-210.170000
242015-12-220.323000
252018-09-210.085000
262022-09-220.085000
272021-12-175.020000
282023-09-220.077000
292014-03-210.063000
302015-03-200.063000
312019-12-190.771000
322021-09-220.095000
332023-12-181.744000
342024-09-200.066000
352023-06-220.073000
362004-12-220.452000
372016-03-220.068000
382016-12-220.232000
392017-03-220.072000
402021-03-220.096000
412013-12-200.051000
422014-09-220.064000
432017-06-220.083000
442022-03-220.067000
452024-12-164.223000
462010-12-220.179000
472013-09-200.065000
482014-12-220.061000
492021-06-220.057000
502025-12-153.132000
511998-12-290.037000
522007-12-210.889000
532014-06-200.059000
542016-06-220.076000
552019-06-210.087000
562019-09-200.093000
572022-12-161.701000
581999-12-220.070000
592024-03-220.046000
602005-12-220.193000
612017-09-220.057000
622018-12-210.963000
632019-03-220.087000
642003-12-220.094000
652017-12-220.601000
662020-12-180.234000
672022-06-220.050000