f/overrides/event-backup/mxgtx-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

595 B

1DateDividends
22017-06-270.032000
32019-12-300.093000
42021-06-250.020000
52022-12-290.265000
62024-09-100.276000
72024-12-300.195000
82016-06-280.062000
92021-12-300.766000
102022-09-080.490000
112023-09-080.213000
122019-06-260.035000
132020-09-080.280000
142016-09-090.439000
152017-09-080.157000
162015-12-300.511000
172020-06-260.029000
182023-12-280.131000
192025-09-090.405000
202025-12-300.152000
212015-06-240.032000
222021-09-070.215000
232023-06-270.027000
242019-09-100.883000
252017-12-280.466000
262022-06-270.024000
272016-12-290.310000
282018-09-110.505000
292018-12-280.467000
302018-06-270.033000