f/overrides/event-backup/lmecx-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

1.6 KiB

1DateDividends
22021-07-160.033000
32021-12-150.215000
42024-06-140.033000
52026-06-160.010000
62023-11-150.019000
72024-04-160.037000
82025-07-150.029000
92026-02-130.032000
102018-12-180.070000
112019-12-170.382000
122021-03-160.016000
132023-04-140.033000
142026-04-150.009000
152018-11-160.002000
162019-03-150.037000
172020-03-170.039000
182024-12-170.065000
192023-12-150.059000
202024-02-150.035000
212024-08-150.032000
222025-08-150.032000
232019-01-150.005000
242021-09-150.028000
252022-01-140.012000
262022-06-150.009000
272025-12-160.028000
282019-08-150.038000
292023-03-150.033000
302023-05-160.037000
312024-11-150.037000
322024-09-170.038000
332025-11-140.021000
342018-06-150.033000
352020-12-150.004000
362021-04-150.033000
372021-08-170.036000
382018-07-160.033000
392019-06-140.037000
402022-09-150.010000
412018-09-170.035000
422021-11-160.032000
432022-08-160.007000
442023-01-130.016000
452025-09-160.033000
462019-05-150.035000
472021-06-150.105000
482021-10-150.029000
492023-08-150.044000
502025-10-150.020000
512019-09-130.036000
522020-01-150.020000
532023-07-140.037000
542025-02-140.030000
552022-04-140.010000
562022-05-170.011000
572024-01-170.018000
582024-07-160.035000
592019-02-150.040000
602020-02-140.037000
612025-05-150.029000
622023-06-150.034000
632024-03-150.034000
642025-04-150.033000
652026-05-150.018000
662025-01-150.012000
672026-03-130.032000
682018-08-160.033000
692020-05-150.013000
702021-05-140.032000
712024-10-150.001000
722019-07-160.040000
732023-09-150.046000
742025-03-140.006000
752026-07-150.010000
762020-04-150.024000
772023-02-150.028000
782025-06-170.034000
792026-01-150.004000
802018-10-160.030000
812019-04-160.040000
822019-10-160.040000
832019-11-150.036000