f/overrides/event-backup/mxakx-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

535 B

1DateDividends
22016-12-290.147000
32017-09-080.039000
42018-12-280.359000
52019-06-260.106000
62019-09-100.438000
72022-06-270.100000
82024-09-100.113000
92017-12-280.305000
102018-06-270.106000
112020-06-260.081000
122020-09-080.232000
132021-09-070.304000
142023-06-270.115000
152025-12-300.321000
162021-12-300.603000
172022-09-080.453000
182023-09-080.189000
192023-12-280.201000
202025-09-090.193000
212017-06-270.087000
222018-09-110.169000
232019-12-300.226000
242020-12-300.255000
252021-06-250.073000
262022-12-290.301000
272024-12-300.331000