f/overrides/event-backup/mxpbx-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
22023-09-060.015000
32024-12-270.276000
42023-12-270.562000
52024-09-060.041000
62019-12-270.357000
72021-12-290.474000
82022-12-280.224000
92018-12-270.391000
102019-09-060.008000
112020-09-040.070000
122020-12-290.267000
132021-09-030.275000
142015-12-290.169000
152016-12-280.231000
162018-09-070.008000
172022-09-060.010000
182025-12-290.575000
192015-09-040.096000
202017-12-270.360000
212025-09-050.008000