f/overrides/event-backup/lipnx-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

735 B

1DateDividends
22020-12-180.064000
32021-03-240.050000
42023-03-240.033000
52025-12-220.111000
62017-09-280.039000
72018-03-260.050000
82021-12-210.269000
92022-09-260.276000
102018-09-250.076000
112021-09-240.198000
122020-09-240.039000
132023-12-190.057000
142026-06-250.252000
152018-12-190.049000
162020-03-250.020000
172024-09-260.060000
182025-09-260.118000
192019-06-250.118000
202022-12-210.078000
212024-03-250.026000
222025-03-250.083000
232017-03-290.047000
242017-06-280.079000
252021-06-240.155000
262022-03-240.146000
272024-06-260.192000
282017-12-200.090000
292019-12-180.040000
302022-06-240.300000
312023-06-260.185000
322023-09-260.103000
332024-12-200.061000
342025-06-260.151000
352026-03-250.020000
362018-06-260.120000
372019-09-250.055000