f/overrides/event-backup/lflsx-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

815 B

1DateDividends
22018-12-200.160000
32022-09-300.092000
42023-03-310.086000
52018-06-280.054000
62020-03-310.049000
72021-09-300.062000
82024-09-300.163000
92017-12-210.251000
102018-03-280.100000
112019-03-290.025000
122021-12-200.104000
132025-03-310.119000
142025-06-300.151000
152025-09-300.153000
162026-03-310.151000
172017-06-300.171000
182019-06-280.083000
192019-09-300.049000
202020-09-300.098000
212022-03-310.044000
222022-06-300.007000
232024-12-200.345000
242025-12-190.212000
252026-06-300.116000
262016-09-300.074000
272023-09-290.168000
282024-03-280.151000
292016-12-220.455000
302021-03-310.080000
312021-06-300.075000
322022-12-200.175000
332023-12-190.153000
342024-06-280.177000
352017-03-310.073000
362017-09-290.108000
372018-09-270.042000
382019-12-190.452000
392020-06-300.079000
402020-12-180.178000
412023-06-300.126000