f/overrides/event-backup/lamhx-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

1.1 KiB

1DateDividends
22021-06-290.047000
32021-12-290.071000
42016-09-300.070000
52017-12-290.068000
62025-12-181.091000
72015-12-310.072000
82016-12-160.967000
92017-06-300.078000
102018-06-290.076000
112016-03-310.070000
122016-06-300.072000
132024-12-270.054000
142026-03-270.059000
152023-03-300.047000
162023-12-190.110000
172021-09-290.059000
182017-12-150.987000
192018-12-270.060000
202019-12-180.696000
212021-03-300.044000
222022-12-280.050000
232018-12-181.026000
242019-09-270.069000
252022-06-290.072000
262025-03-270.055000
272019-12-270.075000
282020-09-290.051000
292022-03-300.049000
302022-12-200.827000
312023-06-290.047000
322023-12-270.058000
332015-12-180.995000
342017-03-310.071000
352017-09-290.071000
362018-09-280.073000
372024-03-270.051000
382024-06-270.051000
392025-09-230.058000
402026-06-260.055000
412019-06-280.072000
422020-06-300.061000
432020-12-290.046000
442015-09-300.076000
452021-12-171.480000
462016-12-300.086000
472022-09-290.043000
482025-12-300.063000
492018-03-290.068000
502024-09-250.050000
512025-06-240.053000
522023-09-280.048000
532024-12-171.022000
542020-12-180.426000
552019-03-290.071000
562020-03-270.058000