f/overrides/event-backup/mxykx-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

475 B

1DateDividends
22024-09-060.114000
32017-12-271.198000
42020-09-040.101000
52021-09-030.522000
62021-12-291.502000
72022-09-060.332000
82022-12-280.477000
92023-09-060.111000
102025-09-050.161000
112015-09-040.135000
122016-12-280.766000
132017-09-060.274000
142018-09-070.161000
152024-12-271.264000
162015-12-291.513000
172019-09-060.077000
182020-12-290.931000
192023-12-270.862000
202025-12-290.480000
212016-09-070.103000
222018-12-271.472000
232019-06-240.010000
242019-12-270.654000