f/overrides/event-backup/lpsdx-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
22013-09-300.057000
32016-09-300.054000
42016-12-300.201000
52019-12-310.714000
62009-09-300.060000
72009-06-300.102000
82012-12-310.519000
92016-06-300.083000
102015-06-300.250000
112017-03-310.040000
122018-09-280.065000
132022-06-300.072000
142023-03-310.047000
152011-09-300.056000
162013-06-280.166000
172013-12-311.078000
182017-06-300.692000
192018-06-290.309000
202025-12-290.556000
212011-12-300.254000
222019-03-280.049000
232022-03-310.118000
242008-06-300.153000
252014-03-310.083000
262017-12-291.135000
272019-09-270.055000
282020-09-300.076000
292024-12-240.869000
302008-09-300.075000
312012-03-300.050000
322014-12-311.663000
332016-03-310.055000
342019-06-280.074000
352020-12-310.256000
362021-12-311.706000
372011-03-310.053000
382012-06-290.122000
392013-03-280.056000
402014-09-300.066000
412025-07-170.080000
422009-12-310.108000
432010-09-300.049000
442015-03-310.065000
452015-09-300.064000
462021-03-310.098000
472021-06-300.578000
482024-06-280.129000
492009-03-310.129000
502011-06-300.124000
512018-03-290.082000
522022-07-140.064000
532023-06-300.092000
542026-07-220.112000
552021-09-300.029000
562023-09-290.094000
572012-09-280.061000
582015-12-300.902000
592017-09-290.067000
602018-12-311.181000
612020-03-310.049000
622020-06-300.223000
632023-12-220.211000
642010-12-310.096000
652014-06-300.400000