f/overrides/event-backup/lijkx-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

1.1 KiB

1DateDividends
22012-03-300.030000
32014-06-300.125000
42015-06-300.074000
52019-12-310.257000
62025-07-170.003000
72017-06-300.088000
82019-03-280.053000
92016-06-300.085000
102023-03-310.060000
112023-12-220.155000
122012-09-280.045000
132013-06-280.081000
142013-12-310.188000
152014-03-310.047000
162015-03-310.046000
172014-09-300.045000
182017-12-290.144000
192016-12-300.104000
202025-12-290.616000
212021-12-310.225000
222012-12-310.126000
232016-09-300.038000
242019-09-270.059000
252020-09-300.045000
262012-06-290.020000
272018-06-290.110000
282018-09-280.066000
292022-03-310.046000
302022-07-140.017000
312024-06-280.002000
322022-12-230.094000
332019-06-280.141000
342020-06-300.099000
352022-09-300.087000
362023-06-300.134000
372024-12-240.488000
382026-07-220.024000
392016-03-310.052000
402018-03-290.039000
412021-03-310.039000
422021-09-300.066000
432022-06-300.129000
442023-09-290.073000
452013-03-280.038000
462013-09-300.054000
472015-09-300.066000
482015-12-300.159000
492017-03-310.037000
502017-09-290.055000
512020-03-310.046000
522020-12-310.121000
532021-06-300.130000
542014-12-310.147000
552018-12-310.106000