f/overrides/event-backup/fdm-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

1.4 KiB

1DateDividends
22023-09-220.277000
32016-12-210.115000
42021-03-250.087000
52022-09-230.260000
62022-12-230.340000
72010-06-220.027000
82013-03-210.032000
92021-09-230.154000
102021-06-240.084000
112023-06-270.416000
122007-06-210.046000
132012-09-210.029000
142013-06-210.080000
152020-09-240.077000
162015-09-230.043000
172019-03-210.200000
182020-06-250.178000
192006-12-210.010000
202015-03-250.164000
212016-09-210.144000
222017-06-220.081000
232024-09-260.209000
242025-03-270.276000
252008-12-230.115000
262011-06-210.054000
272018-06-210.110000
282024-03-210.056000
292020-12-240.354000
302021-12-230.364000
312025-09-250.260000
322006-06-230.046000
332012-12-210.308000
342014-03-250.071000
352015-06-240.058000
362016-06-220.176000
372018-03-220.075000
382019-06-140.135000
392019-09-250.216000
402014-06-240.072000
412018-12-180.235000
422022-03-250.156000
432024-06-270.505000
442007-12-210.089000
452011-12-210.107000
462012-06-210.063000
472016-03-230.065000
482017-09-210.076000
492017-12-210.180000
502020-03-260.196000
512025-06-260.222000
522005-12-190.018000
532010-12-210.056000
542013-09-200.054000
552014-09-230.043000
562017-03-230.125000
572022-06-240.246000
582009-06-230.062000
592009-12-220.037000
602025-12-120.381000
612015-12-230.213000
622019-12-130.147000
632023-03-240.176000
642026-03-260.229000
652013-12-180.105000
662014-12-230.064000
672024-12-130.290000
682008-06-230.061000
692018-09-140.092000
702023-12-220.240000
712026-06-250.379000