f/overrides/event-backup/lpsax-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
22009-09-300.076000
32009-11-180.030000
42020-12-310.534000
52021-06-300.465000
62021-03-310.064000
72008-12-310.045000
82012-06-290.125000
92012-09-280.053000
102013-12-310.634000
112014-09-300.055000
122016-12-300.029000
132017-06-300.411000
142022-03-310.029000
152023-06-300.069000
162023-12-220.628000
172024-06-280.496000
182008-06-300.119000
192011-06-300.104000
202018-09-280.063000
212015-06-300.167000
222015-09-300.048000
232020-09-300.065000
242022-07-140.035000
252024-12-240.275000
262025-07-170.077000
272009-12-310.051000
282010-09-300.054000
292011-03-310.061000
302011-09-300.065000
312008-09-300.092000
322013-09-300.047000
332014-03-310.060000
342015-03-310.059000
352019-06-280.053000
362025-12-290.426000
372015-12-300.342000
382019-12-310.166000
392010-12-310.073000
402011-12-300.428000
412014-06-300.208000
422020-03-310.046000
432022-06-300.052000
442013-03-280.043000
452018-03-290.095000
462021-09-300.032000
472009-06-300.089000
482013-06-280.126000
492017-03-310.033000
502018-06-290.144000
512009-03-310.093000
522023-03-310.040000
532012-12-310.387000
542016-03-310.049000
552016-09-300.055000
562017-09-290.053000
572017-12-290.541000
582024-10-020.291000
592014-12-310.926000
602018-12-310.640000
612019-03-280.041000
622019-09-270.039000
632012-03-300.044000
642016-06-300.053000
652021-12-311.052000
662023-09-290.078000
672026-07-220.071000
682020-06-300.128000