f/overrides/event-backup/mphzx-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
22024-09-300.049000
32015-12-170.591000
42018-12-140.519000
52024-04-300.052000
62025-06-300.048000
72025-09-300.051000
82026-01-300.044000
92026-04-300.046000
102026-06-300.049000
112017-12-180.600000
122019-12-130.562000
132022-11-300.041000
142022-07-290.038000
152024-02-290.046000
162024-07-310.052000
172024-12-310.049000
182025-10-310.047000
192022-01-310.035000
202023-02-280.040000
212023-12-290.041000
222020-12-110.478000
232025-03-310.050000
242024-05-310.047000
252025-01-310.050000
262026-03-310.047000
272013-12-180.846000
282023-07-310.041000
292024-03-280.043000
302016-12-190.572000
312022-03-310.040000
322026-02-270.046000
332025-07-310.047000
342011-12-190.580000
352022-06-300.038000
362024-01-310.048000
372023-11-300.044000
382025-04-300.046000
392023-08-310.042000
402025-11-280.043000
412022-05-310.040000
422022-08-310.042000
432023-03-310.041000
442023-06-300.041000
452024-10-310.048000
462024-11-290.048000
472023-01-310.042000
482023-04-280.038000
492024-08-300.049000
502012-12-190.713000
512014-12-170.926000
522021-12-310.027000
532022-02-280.040000
542022-09-300.041000
552023-05-310.045000
562024-06-280.044000
572025-08-290.043000
582025-12-310.050000
592022-10-310.041000
602023-09-290.043000
612023-10-310.044000
622026-05-290.043000
632026-07-310.045000
642021-12-080.512000
652022-12-300.040000
662025-05-300.042000
672022-04-290.037000
682025-02-280.047000