f/overrides/event-backup/mrskx-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

415 B

1DateDividends
22010-12-090.217000
32012-12-110.306000
42013-12-100.289000
52014-12-110.438000
62020-12-080.228000
72006-12-140.288000
82009-12-100.220000
92011-12-080.285000
102015-12-100.321000
112017-12-120.276000
122022-12-060.348000
132024-12-100.491000
142007-12-110.341000
152008-12-160.240000
162016-12-130.327000
172019-12-100.390000
182021-12-070.346000
192018-12-110.916000
202023-12-190.409000
212025-12-091.451000