f/overrides/event-backup/cabix-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

895 B

1DateDividends
22008-09-180.107000
32008-12-230.118000
42024-12-122.566000
52013-06-140.079000
62016-12-150.908000
72025-12-111.497000
82006-09-210.100000
92008-06-190.090000
102010-12-220.102000
112012-12-201.285000
122011-06-160.081000
132020-12-100.604000
142005-09-220.084000
152007-12-191.489000
162009-03-190.056000
172009-09-170.080000
182018-12-130.140000
192006-06-220.092000
202011-12-220.108000
212012-09-130.072000
222015-12-170.035000
232010-03-180.052000
242010-06-170.088000
252011-09-160.082000
262022-12-081.352000
272017-12-140.574000
282021-12-091.859000
292006-03-230.082000
302006-12-210.609000
312012-03-160.058000
322014-12-181.903000
332009-12-230.120000
342010-09-160.073000
352011-03-170.064000
362012-06-150.070000
372005-12-221.044000
382007-06-210.106000
392007-09-190.112000
402009-06-180.081000
412013-12-200.258000
422019-12-120.279000
432007-03-220.099000
442008-03-190.084000
452023-12-070.269000