f/overrides/event-backup/mgosx-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

376 B

1DateDividends
22019-12-179.712000
32021-12-164.156000
42021-12-220.019000
52023-12-130.580000
62024-12-270.003000
72025-12-180.019000
82018-12-1910.401000
92019-04-040.361000
102020-12-161.661000
112022-12-141.426000
122015-12-293.884000
132020-03-041.416000
142025-12-121.840000
152024-12-131.936000
162013-12-270.803000
172014-12-294.854000
182016-12-284.487000
192017-12-207.088000