f/overrides/event-backup/mxtbx-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

615 B

1DateDividends
22024-09-100.429000
32021-06-250.073000
42022-09-080.733000
52022-12-290.286000
62018-09-110.615000
72023-06-270.104000
82020-09-080.441000
92022-06-270.085000
102025-12-300.340000
112019-09-101.001000
122020-12-300.349000
132021-09-070.633000
142021-12-300.882000
152018-06-270.099000
162016-06-280.086000
172017-09-080.396000
182017-12-280.604000
192024-12-300.446000
202015-12-300.376000
212016-09-090.029000
222016-12-290.404000
232020-06-260.074000
242025-09-090.346000
252015-06-240.081000
262018-12-280.791000
272019-06-260.094000
282019-12-300.286000
292023-09-080.268000
302023-12-280.279000
312017-06-270.088000